Mounting Magnets

A Mounting Magnet is a permanent magnet encased in a steel shell, which is sometimes called a pot or a cup, hence it also called as "Pot Magnet" or "Cup Magnet". These magnetic assemblies are built with neodymium disc magnets embedded in a steel pot. The steel casing creates a strong vertical magnetic pull force (especially on a flat iron or steel surface), concentrating the magnetic force and directing it to the contact surface. Pot magnets are magnetized on one side and the other side can be fitted with screws, hooks and fasteners to fixed products.

ALB Materials Inc supply several types mounting magnets(A, B, C, D, E, F, G, H and R). Below is the shape and product list.

Type A Mounting Magnets:

Type A Mounting Magnet is a flat mounting magnet with a tapered hole to recess a screw head.

Type A Mounting MagnetsType A Mounting Magnets Drawing
Item No. Material Size Pull Force Inquiry
ALB-MM-A-16 NdFeB, Grade N38 D=16mm (0.63" )d1=3.5mm (0.14" ) (Sized for M3 screw) d2=6.5mm (0.26" ) (Tapered countersunk hole) h=5mm (0.20" ) 11.00 lbs Inquiry
ALB-MM-A-20 NdFeB, Grade N38 D=20mm (0.79" ) d1=4.5mm (0.18" ) (Sized for M4 screw) d2=8.5mm (0.33" ) (Tapered countersunk hole) h=7mm (0.28" ) 13.20 lbs Inquiry
ALB-MM-A-25 NdFeB, Grade N38 D=25mm (0.98" ) d1=5.5mm (0.22" ) (Sized for M5 screw) d2=10mm (0.39" ) (Tapered countersunk hole) h=8mm (0.32" ) 31.00 lbs Inquiry
ALB-MM-A-32 NdFeB, Grade N38 D=32mm (1.26" ) d1=5.5mm (0.22" ) (Sized for M5 screw) d2=10mm (0.39" ) (Tapered countersunk hole) h=8mm (0.32" ) 55.1 lbs Inquiry
ALB-MM-A-36 NdFeB, Grade N38 D=36mm (1.42" ) d1=6.5mm (0.26" ) (Sized for M6 screw) d2=12mm (0.47" ) (Tapered countersunk hole) h=8mm (0.31" ) 63.9 lbs Inquiry
ALB-MM-A-42 NdFeB, Grade N38 D=42mm (1.65" ) d1=6.5mm (0.26" ) (Sized for M6 screw) d2=12.5mm (0.49" ) (Tapered countersunk hole) h=9mm (0.35" ) 81.6 lbs Inquiry
ALB-MM-A-48 NdFeB, Grade N38 D=48mm (1.89" ) d1=8.5mm (0.33" ) (Sized for M8 screw) d2=16mm (0.63" ) (Tapered countersunk hole) h=11mm (0.43" ) 150.0 lbs Inquiry
ALB-MM-A-60 NdFeB, Grade N38 D=60mm (2.36" ) d1=8.5mm (0.33" ) (Sized for M8 screw) d2=16.5mm (0.65" ) (Tapered countersunk hole) h=15mm (0.59" ) 245.0 lbs Inquiry
ALB-MM-A-75 NdFeB, Grade N38 D=75mm (2.95" ) d1=10.5mm (0.41" ) (Sized for M10 screw) d2=19mm (0.75" ) (Tapered countersunk hole) h=18mm (0.71" ) 357 lbs Inquiry
ALB-MMS-A-A NdFeB, Grade N42 Diameter= 5/8" (0.625" ) Hole Size= #4 Screw Height= 3/16" (0.188" ) 13.66 lbs Inquiry
ALB-MMS-A-C NdFeB, Grade N42 Diameter= 3/4" (0.75" ) Hole Size= #6 Screw Height= 1/4" (0.25" ) 19.71 lbs Inquiry
ALB-MMS-A-X0 NdFeB, Grade N42 Diameter= 1" (1.0" ) Hole Size= #8 Screw Height= 1/4" (0.25" ) 36.87 lbs Inquiry
ALB-MMS-A-X4 NdFeB, Grade N42 Diameter= 1 1/4" (1.25" ) Hole Size= #10 Screw Height= 3/8" (0.375" ) 58.27 lbs Inquiry
ALB-MMS-A-X8 NdFeB, Grade N42 Diameter= 1 1/2" (1.5" ) Hole Size= #10 Screw Height= 3/8" (0.375" ) 92.34 lbs Inquiry
ALB-MMS-A-XC NdFeB, Grade N42 Diameter= 1 3/4" (1.75" ) Hole Size= 1/4" Screw Height= 3/8" (0.375" ) 122.5 lbs Inquiry
ALB-MMS-A-Y0 NdFeB, Grade N42 Diameter= 2" (2.00" ) Hole Size= 1/4" Screw Height= 1/2" (0.500" ) 168.3 lbs Inquiry
ALB-MMS-A-Y8 NdFeB, Grade N42 Diameter= 2 1/2" (2.50" ) Hole Size= 3/8" Screw Height= 5/8" (0.500" ) 254.0 lbs Inquiry
ALB-MMS-A-Z0 NdFeB, Grade N42 Diameter= 3" (3.00" ) Hole Size= 3/8" Screw Height= 3/4" (0.750" ) 350.1 lbs Inquiry

Type B Mounting Magnets:

Type B Mounting Magnet is a flat mounting magnet with a straight hole through the magnet to recess a screw or bolt head.

Type B Mounting MagnetsType B Mounting Magnets Drawing
Item No. Material Size Pull Force Inquiry
ALB-MM-B-16 NdFeB, Grade N38 D=16mm (0.63" ) d1=3.5mm (0.14" ) (Sized for M3 screw) d2=6.5mm (0.26" ) (Straight counterbored hole) h=5mm (0.20" ) 8.80 lbs Inquiry
ALB-MM-B-20 NdFeB, Grade N38 D=20mm (0.79" ) d1=4.5mm (0.18" ) (Sized for M4 screw) d2=8.5mm (0.33" ) (Straight counterbored hole) h=7mm (0.28" ) 13.2 lbs Inquiry
ALB-MM-B-25 NdFeB, Grade N38 D=25mm (0.98" ) d1=5.5mm (0.22" ) (Sized for M5 screw) d2=10mm (0.39" ) (Straight counterbored hole) h=8mm (0.31" ) 30.9 lbs Inquiry
ALB-MM-B-32 NdFeB, Grade N38 D=32mm (1.26" ) d1=5.5mm (0.22" ) (Sized for M5 screw) d2=10mm (0.39" ) (Straight counterbored hole) h=8mm (0.32" ) 50.7 lbs Inquiry
ALB-MM-B-36 NdFeB, Grade N38 D=36mm (1.42" ) d1=6.5mm (0.26" ) (Sized for M6 screw) d2=11mm (0.43" ) (Straight counterbored hole) h=8mm (0.31" ) 59.5 lbs Inquiry
ALB-MM-B-42 NdFeB, Grade N38 D=42mm (1.65" ) d1=6.5mm (0.26" ) (Sized for M6 screw) d2=12.5mm (0.49" ) (Straight counterbored hole) h=9mm (0.35" ) 70.5 lbs Inquiry
ALB-MM-B-48 NdFeB, Grade N38 D=48mm (1.89" ) d1=8.5mm (0.33" ) (Sized for M8 screw) d2=15mm (0.59" ) (Straight counterbored hole) h=11mm (0.43" ) 139.0 lbs Inquiry
ALB-MM-B-60 NdFeB, Grade N38 D=60mm (2.36" ) d1=8.5mm (0.33" ) (Sized for M8 screw) d2=16.5mm (0.65" ) (Straight counterbored hole) h=15mm (0.59" ) 209.4 lbs Inquiry
ALB-MM-B-75 NdFeB, Grade N38 D=75mm (2.95" ) d1=10.5mm (0.41" ) (Sized for M10 screw) d2=19mm (0.75" ) (Straight counterbored hole) h=18mm (0.71" ) 341.7 lbs Inquiry
ALB-MMS-B-A NdFeB, Grade N42 Diameter = 5/8" (0.625" ) Hole Size = #4 Screw Height = 3/16" (0.187" ) 10.46 lbs Inquiry
ALB-MMS-B-C NdFeB, Grade N42 Diameter = 3/4" (0.75" ) Hole Size = #6 Screw Height = 1/4" (0.25" ) 16.25 lbs Inquiry
ALB-MMS-B-X0 NdFeB, Grade N42 Diameter = 1" (1.00" ) Hole Size = #8 Screw Height = 1/4" (0.25" ) 30.49 lbs Inquiry
ALB-MMS-B-X4 NdFeB, Grade N42 Diameter = 1 1/4" (1.25" ) Hole Size = #10 Screw Height = 3/8" (0.375" ) 52.42 lbs Inquiry
ALB-MMS-B-X8 NdFeB, Grade N42 Diameter = 1 1/2" (1.50" ) Hole Size = #10 Screw Height = 3/8" (0.375" ) 86.01 lbs Inquiry
ALB-MMS-B-XC NdFeB, Grade N42 Diameter = 1 3/4" (1.75" ) Hole Size = 1/4" Screw Height = 3/8" (0.375" ) 117.3 lbs Inquiry
ALB-MMS-B-Y0 NdFeB, Grade N42 Diameter = 2" (2.00" ) Hole Size = 1/4" Screw Height = 1/2" (0.500" ) 158.8 lbs Inquiry
ALB-MMS-B-Y8 NdFeB, Grade N42 Diameter = 2 1/2" (2.50" ) Hole Size = 3/8" Screw Height = 5/8" (0.625" ) 243.6 lbs Inquiry
ALB-MMS-B-Z0 NdFeB, Grade N42 Diameter = 3" (3.00" ) Hole Size = 3/8" Screw Height = 3/4" (0..750" ) 343.6 lbs Inquiry

Type C Mounting Magnets:

Type C Mounting Magnet is a flat mounting magnet with male stud permanently attached to the mount.

Type C Mounting MagnetsType C Mounting Magnets Drawing
Item No. Material Size Pull Force Inquiry
ALB-MM-C-10 NdFeB, Grade N38 D=10mm (0.39" ) M=3mm (0.12" ) (M3 Coarse Male threaded stud) H=12mm (0.47" ) h=5mm (0.20" ) 4.9 lbs Inquiry
ALB-MM-C-12 NdFeB, Grade N38 D=12mm (0.47" ) M=3mm (0.12" ) (M3 Coarse Male threaded stud) H=13mm (0.51" ) h=5mm (0.20" ) 7.0 lbs Inquiry
ALB-MM-C-16 NdFeB, Grade N38 D=16mm (0.63" ) M=4mm (0.16" ) (M4 Coarse Male threaded stud) H=13mm (0.51" ) h=5mm (0.20" ) 12.1 lbs Inquiry
ALB-MM-C-20 NdFeB, Grade N38 D=20mm (0.79" ) M=4mm (0.16" ) (M4 Coarse Male threaded stud) H=15mm (0.59" ) h=7mm (0.28" ) 28.7 lbs Inquiry
ALB-MM-C-25 NdFeB, Grade N38 D=25mm (0.98" ) M=5mm (0.20" ) (M5 Coarse Male threaded stud) H=17mm (0.67" ) h=8mm (0.32" ) 48.5 lbs Inquiry
ALB-MM-C-32 NdFeB, Grade N38 D=32mm (1.26" ) M=6mm (0.24" ) (M6 Coarse Male threaded stud) H=18mm (0.71" ) h=8mm (0.32" ) 75.0 lbs Inquiry
ALB-MM-C-36 NdFeB, Grade N38 D=36mm (1.42" ) M=6mm (0.24" ) (M6 Coarse Male threaded stud) H=18mm (0.71" ) h=8mm (0.31" ) 90.4 lbs Inquiry
ALB-MM-C-42 NdFeB, Grade N38 D=42mm (1.65" ) M=6mm (0.24" ) (M6 Coarse Male threaded stud) H=20mm (0.79" ) h=9mm (0.35" ) 149.9 lbs Inquiry
ALB-MM-C-48 NdFeB, Grade N38 D=48mm (1.89" ) M=8mm (0.31" ) (M8 Coarse Male threaded stud) H=24mm (0.94" ) h=11mm (0.43" ) 179.0 lbs Inquiry
ALB-MM-C-60 NdFeB, Grade N38 D=60mm (2.36" ) M=8mm (0.32" ) (M8 Coarse Male threaded stud) H=30mm (1.18" ) h=15mm (0.59" ) 249.1 lbs Inquiry
ALB-MM-C-75 NdFeB, Grade N38 D=75mm (2.95" ) M=10mm (0.39" ) (M10 Coarse Male threaded stud) H=34mm (1.34" ) h=18mm (0.71" ) 361.6 lbs Inquiry
ALB-MMS-C-A NdFeB, Grade N42 Diameter = 5/8" (0.625" ) Threaded Male Stud = #4-40 UNC 2A Height = 3/16" (0.188" ) 15.63 lbs Inquiry
ALB-MMS-C-C NdFeB, Grade N42 Diameter = 3/4" (0.750" ) Threaded Male Stud = #6-32 UNC 2A Height = 1/4" (0.250" ) 22.03 lbs Inquiry
ALB-MMS-C-X0 NdFeB, Grade N42 Diameter = 1" (1.00" ) Threaded Male Stud = #8-32 UNC 2A Height = 1/4" (0.250" ) 40.64 lbs Inquiry
ALB-MMS-C-X4 NdFeB, Grade N42 Diameter = 1 1/4" (1.25" ) Threaded Male Stud = #10-32 UNF 2A Height = 3/8" (0.375" ) 61.40 lbs Inquiry
ALB-MMS-C-X8 NdFeB, Grade N42 Diameter = 1 1/2" (1.50" ) Threaded Male Stud = #10-32 UNF 2A Height = 3/8" (0.375" ) 95.78 lbs Inquiry
ALB-MMS-C-XC NdFeB, Grade N42 Diameter = 1 3/4" (1.75" ) Threaded Male Stud = 1/4" -20 UNC 2A Height = 3/8" (0.375" ) 125.4 lbs Inquiry
ALB-MMS-C-Y0 NdFeB, Grade N42 Diameter = 2" (2.00" ) Threaded Male Stud = 1/4" -20 UNC 2A Height = 1/2" (0.50" ) 173.0 lbs Inquiry
ALB-MMS-C-Y8 NdFeB, Grade N42 Diameter = 2 1/2" (2.50" ) Threaded Male Stud = 3/8" -16 UNC 2A Height = 5/8" (0.625" ) 259.1 lbs Inquiry
ALB-MMS-C-Z0 NdFeB, Grade N42 Diameter = 3" (3.00" ) Threaded Male Stud = 3/8" -16 UNC 2A Height = 3/4" (0.750" ) 352.4 lbs Inquiry

Type D Mounting Magnets:

Type D Mounting Magnet is a flat mounting magnet with a female threaded shaft permanently attached. If you need a magnet to attach to something threaded, this is what you need.

Type D Mounting MagnetsType D Mounting Magnets Drawing
Item No. Material Size Pull Force Inquiry
ALB-MM-D-10 NdFeB, Grade N38 D=10mm (0.39" ) d=3mm (0.12" ) (M3 Coarse Female threadedstud) H=12.5mm (0.49" ) h=5mm (0.20" ) M=6mm (0.24" ) 4.70 lbs Inquiry
ALB-MM-D-12 NdFeB, Grade N38 D=12mm (0.39" ) d=3mm (0.12" ) (M3 Coarse Female threadedstud) H=13mm (0.51" ) h=5mm (0.20" ) M=6mm (0.24" ) 5.20 lbs Inquiry
ALB-MM-D-16 NdFeB, Grade N38 D=16mm (0.63" ) d=4mm (0.16" ) (M4 Coarse Female threadedstud) H=13mm (0.51" ) h=5mm (0.20" ) M=6mm (0.24" ) 12.1 lbs Inquiry
ALB-MM-D-20 NdFeB, Grade N38 D=20mm (0.79" ) d=4mm (0.16" ) (M4 Coarse Female threaded stud) H=15mm (0.59" ) h=7mm (0.28" ) M=7mm (0.28" ) 28.7 lbs Inquiry
ALB-MM-D-25 NdFeB, Grade N38 D=25mm (0.98" ) d=5mm (0.20" ) (M5 Coarse Female threaded stud) H=17mm (0.67" ) h=8mm (0.31" ) M=8mm (0.31" ) 48.5 lbs Inquiry
ALB-MM-D-32 NdFeB, Grade N38 D=32mm (1.26" ) d=6mm (0.24" ) (M6 Coarse Female threaded stud) H=18mm (0.71" ) h=8mm (0.32" ) M=10mm (0.39" ) 75.0 lbs Inquiry
ALB-MM-D-36 NdFeB, Grade N38 D=36mm (1.42" ) d=6mm (0.24" ) (M6 Coarse Female threaded stud) H=18mm (0.71" ) h=6mm (0.24" ) M=10mm (0.39" ) 90.4 lbs Inquiry
ALB-MM-D-42 NdFeB, Grade N38 D=42mm (1.65" ) d=6mm (0.32" ) (M6 Coarse Female threaded stud) H=20mm (0.79" ) h=9mm (0.36" ) M=10mm (0.39" ) 149.9 lbs Inquiry
ALB-MM-D-48 NdFeB, Grade N38 D=48mm (1.89" ) d=8mm (0.31" ) (M8 Coarse Female threaded stud) H=24mm (0.94" ) h=11mm (0.43" ) M=12mm (0.47" ) 178.6 lbs Inquiry
ALB-MM-D-60 NdFeB, Grade N38 D=60mm (2.36" ) d=8mm (0.32" ) (M8 Coarse Female threaded stud) H=30mm (1.18" ) h=15mm (0.59" ) M=12mm (0.47" ) 249.1 lbs Inquiry
ALB-MM-D-75 NdFeB, Grade N38 D=75mm (2.95" ) d=10mm (0.39" ) (M10 Coarse Female threaded stud) H=34mm (1.34" ) h=18mm (0.71" ) M=16mm (0.63" ) 361.6 lbs Inquiry
ALB-MMS-D-A NdFeB, Grade N42 Diameter = 5/8" (0.625" ) Threaded Female Stud = #4-40 UNC 2B Height = 3/16" (0.188" ) 15.63 lbs Inquiry
ALB-MMS-D-C NdFeB, Grade N42 Diameter = 3/4" (0.750" ) Threaded Female Stud = #6-32 UNC 2B Height = 1/4" (0.250" ) 22.03 lbs Inquiry
ALB-MMS-D-X0 NdFeB, Grade N42 Diameter = 1" (1.00" ) Threaded Female Stud = #8-32 UNC 2B Height = 1/4" (0.250" ) 40.64 lbs Inquiry
ALB-MMS-D-X4 NdFeB, Grade N42 Diameter = 1 1/4" (1.25" ) Threaded Female Stud = #10-32 UNF 2B Height = 3/8" (0.375" ) 61.40 lbs Inquiry
ALB-MMS-D-X8 NdFeB, Grade N42 Diameter = 1 1/2" (1.50" ) Threaded Female Stud = #10-32 UNF 2B Height = 3/8" (0.375" ) 95.78 lbs Inquiry
ALB-MMS-D-XC NdFeB, Grade N42 Diameter = 1 3/4" (1.75" ) Threaded Female Stud = 1/4" -20 UNC 2B Height = 3/8" (0.375" ) 125.4 lbs Inquiry
ALB-MMS-D-Y0 NdFeB, Grade N42 Diameter = 2" (2.00" ) Threaded Female Stud = 1/4" -20 UNC 2B Height = 1/2" (0.50" ) 173.0 lbs Inquiry
ALB-MMS-D-Y8 NdFeB, Grade N42 Diameter = 2 1/2" (2.50" ) Threaded Female Stud = 3/8" -16 UNC 2B Height = 5/8" (0.625" ) 259.1 lbs Inquiry
ALB-MMS-D-Z0 NdFeB, Grade N42 Diameter = 3" (3.00" ) Threaded Female Stud = 3/8" -16 UNC 2B Height = 3/4" (0.75" ) 352.4 lbs Inquiry

Type E Mounting Magnets:

Type E Mounting Magnet is Type D Mounting Magnet with a hook attached.

Type E Mounting MagnetsType E Mounting Magnets Drawing
Item No. Material Size Pull Force Inquiry
ALB-MM-E-16 NdFeB, Grade N38 D=16mm (0.63" ) H=35mm (1.38" ) M=4mm (0.16" ) (M4 Coarsethreaded hook) 12.1 lbs Inquiry
ALB-MM-E-20 NdFeB, Grade N38 D=20mm (0.79" ) H=37mm (1.46" ) M=4mm (0.16" ) (M4 Coarsethreaded hook) 28.7 lbs Inquiry
ALB-MM-E-25 NdFeB, Grade N38 D=25mm (0.98" ) H=43mm (1.69" ) M=5mm (0.20" ) (M5 Coarsethreaded hook) 48.5 lbs Inquiry
ALB-MM-E-32 NdFeB, Grade N38 D=32mm (1.26" ) H=47mm (1.85" ) M=6mm (0.24" ) (M6 Coarsethreaded hook) 75.0 lbs Inquiry
ALB-MM-E-36 NdFeB, Grade N38 D=36mm (1.42" ) H=46mm (1.81" ) M=6mm (0.24" ) (M6 Coarsethreaded hook) 90.4 lbs Inquiry
ALB-MM-E-42 NdFeB, Grade N38 D=42mm (1.65" ) H=52mm (2.05" ) M=6mm (0.24" ) (M6 Coarsethreaded hook) 149.9 lbs Inquiry
ALB-MM-E-48 NdFeB, Grade N38 D=48mm (1.89" ) H=62mm (2.44" ) M=8mm (0.32" ) (M8 Coarsethreaded hook) 178.6 lbs Inquiry
ALB-MM-E-60 NdFeB, Grade N38 D=60mm (2.36" ) H=66mm (2.60" ) M=8mm (0.32" ) (M8 Coarsethreaded hook) 249.1 lbs Inquiry
ALB-MM-E-75 NdFeB, Grade N38 D=75mm (2.95" ) H=75mm (2.95" ) M=10mm (0.39" ) (M10 Coarsethreaded hook) 361.6 lbs Inquiry
ALB-MMS-E-A NdFeB, Grade N42 Diameter = 5/8" (0.625" ) Height = 1 1/2" (1.5" ) Hook Attachment = #4-40 Threaded Open Hook 15.63 lbs Inquiry
ALB-MMS-E-C NdFeB, Grade N42 Diameter = 3/4" (0.75" ) Height = 1 7/8" (1.875" ) Hook Attachment = #6-32 Threaded Open Hook 22.03 lbs Inquiry
ALB-MMS-E-X0 NdFeB, Grade N42 Diameter = 1" (1.00" ) Height = 2 1/8" (2.125" ) Hook Attachment = #8-32 Threaded Open Hook 40.64 lbs Inquiry
ALB-MMS-E-X4 NdFeB, Grade N42 Diameter = 1 1/4" (1.25" ) Height = 2 2/5" (2.4" ) Hook Attachment = #10-32 Threaded Open Hook 61.40 lbs Inquiry
ALB-MMS-E-X8 NdFeB, Grade N42 Diameter = 1 1/2" (1.50" ) Height = 2 3/8" (2.375" ) Hook Attachment = #10-32 Threaded Open Hook 95.78 lbs Inquiry
ALB-MMS-E-XC NdFeB, Grade N42 Diameter = 1 3/4" (1.75" ) Height = 3" (3.0" ) Hook Attachment = 1/4" -20 Threaded Open Hook 125.4 lbs Inquiry
ALB-MMS-E-Y0 NdFeB, Grade N42 Diameter = 2" (2.00" ) Height = 3" (3.0" ) Hook Attachment = 1/4" -20 Threaded Open Hook 173.0 lbs Inquiry
ALB-MMS-E-Y8 NdFeB, Grade N42 Diameter = 2 1/2" (2.50" ) Height = 4 1/8" (4.125" ) Hook Attachment = 3/8" -16 Threaded Open Hook 259.1 lbs Inquiry
ALB-MMS-E-Z0 NdFeB, Grade N42 Diameter = 3" (3.00" ) Height = 4 1/4" (4.25" ) Hook Attachment = 3/8" -16 Threaded Open Hook 352.4 lbs Inquiry

Type F Mounting Magnets:

Type F Mounting Magnet is a kind of Hook magnets.

Type F Mounting MagnetsType F Mounting Magnets Drawing
Item No. Material Size Pull Force Inquiry
ALB-MM-F-12 NdFeB, Grade N42 1/2" dia. x 1/2" thick overall 10.8 lbs Inquiry
ALB-MM-F-16 NdFeB, Grade N42 5/8" dia. x 5/8" thick overall 15.6 lbs Inquiry

Type G Mounting Magnets:

Type G Mounting Magnet is Type D Mounting Magnet with an eye hook attached.

Item No. Material Size Pull Force Inquiry
ALB-MMS-G-A NdFeB, Grade N42 Diameter = 5/8" (0.625" ) Height = 1 1/2" (1.5" ) Hook Attachment = #4-40 Threaded Eye Hook 15.63 lbs Inquiry
ALB-MMS-G-C NdFeB, Grade N42 Diameter = 3/4" (0.75" ) Height = 1 7/10" (1.70" ) Hook Attachment = #6-32 Threaded Eye Hook 22.03 lbs Inquiry
ALB-MMS-G-X0 NdFeB, Grade N42 Diameter = 1" (1.00" ) Height = 2" (2.0" ) Hook Attachment = #8-32 Threaded Eye Hook 40.64 lbs Inquiry
ALB-MMS-G-X4 NdFeB, Grade N42 Diameter = 1 1/4" (1.25" ) Height = 2 1/4" (2.25" ) Hook Attachment = #10-32 Threaded Eye Hook 61.40 lbs Inquiry
ALB-MMS-G-X8 NdFeB, Grade N42 Diameter = 1 1/2" (1.50" ) Height = 2 1/4" (2.25" ) Hook Attachment = #10-32 Threaded Eye Hook 95.78 lbs Inquiry
ALB-MMS-G-XC NdFeB, Grade N42 Diameter = 1 3/4" (1.75" ) Height = 2 4/5" (2.80" ) Hook Attachment = 1/4" -20 Threaded Eye Hook 125.4 lbs Inquiry
ALB-MMS-G-Y0 NdFeB, Grade N42 Diameter = 2" (2.00" ) Height = 2 9/10" (2.90" ) Hook Attachment = 1/4" -20 Threaded Eye Hook 173.0 lbs Inquiry
ALB-MMS-G-Y8 NdFeB, Grade N42 Diameter = 2 1/2" (2.50" ) Height = 4 1/4" (4.25" ) Hook Attachment = 3/8" -16 Threaded Eye Hook 259.1 lbs Inquiry
ALB-MMS-G-Z0 NdFeB, Grade N42 Diameter = 3" (3.00" ) Height = 4 3/8" (4.375" ) Hook Attachment = 3/8" -16 Threaded Eye Hook 352.4 lbs Inquiry

Type H Mounting Magnets:

Type H Mounting Magnet is a flat mounting magnet with an internal thread in the center.

Item No. Material Size Pull Force Inquiry
ALB-MMS-H-A NdFeB, Grade N42 Diameter = 5/8" (0.625" ) Internal Thread Size = #4-40 UNC 2B Height = 3/16" (0.187" ) 9.45 lbs Inquiry
ALB-MMS-H-C NdFeB, Grade N42 Diameter = 3/4" (0.750" ) Internal Thread Size = #6-32 UNC 2B Height = 1/4" (0.250" ) 17.09 lbs Inquiry
ALB-MMS-H-X0 NdFeB, Grade N42 Diameter = 1" (1.00" ) Internal Thread Size = #8-32 UNC 2B Height = 1/4" (0.250" ) 37.73 lbs Inquiry
ALB-MMS-H-X4 NdFeB, Grade N42 Diameter = 1 1/4" (1.25" ) Internal Thread Size = #10-32 UNF 2B Height = 3/8" (0.375" ) 66.38 lbs Inquiry
ALB-MMS-H-X8 NdFeB, Grade N42 Diameter = 1 1/2" (1.5" ) Internal Thread Size = #10-32 UNF 2B Height = 3/8" (0.375" ) 103.6 lbs Inquiry
ALB-MMS-H-XC NdFeB, Grade N42 Diameter = 1 3/4" (1.75" ) Internal Thread Size = 1/4" -20 UNC 2B Height = 3/8" (0.375" ) 142.05 lbs Inquiry
ALB-MMS-H-Y0 NdFeB, Grade N42 Diameter = 2" (2.00" ) Internal Thread Size = 1/4" -20 UNC 2B Height = 1/2" (0.5" ) 190.0 lbs Inquiry
ALB-MMS-H-Y8 NdFeB, Grade N42 Diameter = 2 1/2" (2.50" ) Internal Thread Size = 3/8" -16 UNC 2B Height = 5/8" (0.625" ) 293.1 lbs Inquiry
ALB-MMS-H-Z0 NdFeB, Grade N42 Diameter = 3" (3.00" ) Internal Thread Size = 3/8" -16 UNC 2B Height = 3/4" (0.75" ) 396.4 lbs Inquiry

Type R Mounting Magnets(Rectangular Mounting Magnets):

Type R Mounting Magnet also called as Rectangular Mounting Magnet. It is a rectangular, or bar shaped Neodymium Mounting Magnet with two tapered holes to recess screw heads.

Item No. Material Size Pull Force Inquiry
ALB-MMR-A-X8 NdFeB, Grade N42 Length= 1 1/2" (1.5" ) Width= 9/16" (0.563" ) Height= 3/16" (0.188" ) Holes sized for #4 flat-head screws 26.75 lbs Inquiry
ALB-MMR-A-XC NdFeB, Grade N42 Length= 1 3/4" (1.75" ) Width= 3/4" (0.75" ) Height= 5/16" (0.313" ) Holes sized for #6 flat-head screws 54.14 lbs Inquiry
ALB-MMR-A-Y8 NdFeB, Grade N42 Length= 2 1/2" (2.50" ) Width= 3/4" (0.75" ) Height= 3/8" (0.375" ) Holes sized for #8 flat-head screws 84.39 lbs Inquiry
ALB-MMR-A-ZC NdFeB, Grade N42 Length= 3 3/4" (3.75" ) Width= 1" (1.00" ) Height= 3/8" (0.375" ) Holes sized for #10 flat-head screws 151.8 lbs Inquiry
ALB-MMR-A-ZX8 NdFeB, Grade N42 Length= 4 1/2" (4.50" ) Width= 1 1/2" (1.50" ) Height= 1/2" (0.5" ) Holes sized for 1/4" flat-head screws 260.5 lbs Inquiry

Threads Used in Mounting Magnets:

UNC/UNF Threads

UNC and UNF - Unified Inch Screw Threads
ANSI/ASME B1.1 Unified National Thread - UNC Coarse series and UNF Fine series
UNC – Unified National Coarse Thread - comparable with the ISO metric thread
UNF – Unified National Fine Thread
Female and Male UNC/UNF threads are both parallel
The UNC/UNF flank angle is 60°

UNC - Unified Coarse Threads

UNC threads according ANSI B1.1:

Major Diameter
(in)
Threads per inch
(tpi)
Major Diameter Tap Drill Size
(mm)
Pitch
(mm)
(in) (mm)
#1 - 64 64 0.073 1.854 1.50 0.397
#2 - 56 56 0.086 2.184 1.80 0.453
#3 - 48 48 0.099 2.515 2.10 0.529
#4 - 40 40 0.112 2.845 2.35 0.635
#5 - 40 40 0.125 3.175 2.65 0.635
#6 - 32 32 0.138 3.505 2.85 0.794
#8 - 32 32 0.164 4.166 3.50 0.794
#10 - 24 24 0.190 4.826 4.00 1.058
#12 - 24 24 0.216 5.486 4.65 1.058
1/4" - 20 20 0.250 6.350 5.35 1.270
5/16" - 18 18 0.313 7.938 6.80 1.411
3/8" - 16 16 0.375 9.525 8.25 1.587
7/16" - 14 14 0.438 11.112 9.65 1.814
1/2" - 13 13 0.500 12.700 11.15 1.954
9/16" - 12 12 0.563 14.288 12.60 2.117
5/8" - 11 11 0.625 15.875 14.05 2.309
3/4" - 10 10 0.750 19.050 17.00 2.540
7/8" - 9 9 0.875 22.225 20.00 2.822
1" - 8 8 1.000 25.400 22.85 3.175
1 1/8" - 7 7 1.125 28.575 25.65 3.628
1 1/4" - 7 7 1.250 31.750 28.85 3.628
1 3/8" - 6 6 1.375 34.925 31.55 4.233
1 1/2" - 6 6 1.500 38.100 34.70 4.233
1 3/4" - 5 5 1.750 44.450 40.40 5.080
2" - 4 1/2 4 1/2 2.000 50.800 46.30 5.644
2 1/4" - 4 1/2 4 1/2 2.250 57.150 52.65 5.644
2 1/2" - 4 4 2.500 63.500 58.50 6.350
2 3/4" - 4 4 2.750 69.850 64.75 6.350
3" - 4 4 3.000 76.200 71.10 6.350
3 1/4" - 4 4 3.250 82.550 77.45 6.350
3 1/2" - 4 4 3.500 88.900 83.80 6.350
3 3/4" - 4 4 3.750 95.250 90.15 6.350
4" - 4 4 4.000 101.600 96.50 6.350

UNF - Unified National Fine Threads

UNF threads ANSI B1.1:

Major Diameter
(in)
Threads per inch
(tpi)
Major Diameter Tap Drill Size
(mm)
Pitch
(mm)
(in) (mm)
#0 - 80 80 0.060 1.524 1.25 0.317
#1 - 72 72 0.073 1.854 1.55 0.353
#2 - 64 64 0.086 2.184 1.90 0.397
#3 - 56 56 0.099 2.515 2.15 0.453
#4 - 48 48 0.112 2.845 2.40 0.529
#5 - 44 44 0.125 3.175 2.70 0.577
#6 - 40 40 0.138 3.505 2.95 0.635
#8 - 36 36 0.164 4.166 3.50 0.705
#10 - 32 32 0.190 4.826 4.10 0.794
#12 - 28 28 0.216 5.486 4.70 0.907
1/4" - 28 28 0.250 6.350 5.50 0.907
5/16" - 24 24 0.313 7.938 6.90 1.058
3/8" - 24 24 0.375 9.525 8.50 1.058
7/16" - 20 20 0.438 11.112 9.90 1.270
1/2" - 20 20 0.500 12.700 11.50 1.270
9/16" - 18 18 0.563 14.288 12.90 1.411
5/8" - 18 18 0.625 15.875 14.50 1.411
3/4" - 16 16 0.750 19.050 17.50 1.587
7/8" - 14 14 0.875 22.225 20.40 1.814
1" - 12 12 1.000 25.400 23.25 2.117
1 1/8" - 12 12 1.125 28.575 26.50 2.117
1 1/4" - 12 12 1.250 31.750 29.50 2.117
1 3/8" - 12 12 1.375 34.925 32.75 2.117
1 1/2" - 12 12 1.500 38.100 36.00 2.117

Metric Coarse Thread

According to ISO965

All Dimensions in mm unless otherwise stated.

Tolerances: Male Thread 6g    Female Thread: 6h

The "M" designation for metric screws indicates the nominal outer diameter of the screw thread, in millimetres (e.g., an M6 screw has a nominal outer diameter of 6 millimetres).

Thread Major
Diameter
Pitch Pitch
Diameter
Minor Diameter
Male Thread
Minor Diameter
Female Thread
M1 1.0 0.25 0.838 0.693 0.729
M1.1 1.1 0.25 0.938 0.793 0.829
M1.2 1.2 0.25 1.038 0.893 0.929
M1.4 1.4 0.30 1.205 1.032 1.075
M1.6 1.6 0.35 1.373 1.171 1.221
M1.8 1.8 0.35 1.573 1.371 1.421
M2 2.0 0.40 1.740 1.509 1.567
M2.2 2.2 0.45 1.908 1.648 1.713
M2.5 2.5 0.45 2.208 1.948 2.013
M3 3.0 0.50 2.675 2.387 2.459
M3.5 3.5 0.60 3.110 2.764 2.850
M4 4.0 0.70 3.545 3.141 3.242
M4.5 4.5 0.75 4.013 3.580 3.688
M5 5.0 0.80 4.480 4.019 4.134
M6 6.0 1.00 5.350 4.773 4.917
M7 7.0 1.00 6.350 5.773 5.917
M8 8.0 1.25 7.188 6.466 6.647
M9 9.0 1.25 8.188 7.466 7.647
M10 10.0 1.50 9.026 8.160 8.376
M11 11.0 1.50 10.026 9.160 9.376
M12 12.0 1.75 10.863 9.853 10.106
M14 14.0 2.00 12.701 11.546 11.835
M16 16.0 2.00 14.701 13.546 13.835
M18 18.0 2.50 16.376 14.933 15.394
M20 20.0 2.50 18.376 16.933 17.294
M22 22.0 2.50 20.376 18.933 19.294
M24 24.0 3.00 22.051 20.319 20.752
M27 27.0 3.00 25.051 23.319 23.752
M30 30.0 3.50 27.727 25.706 26.211
M33 33.0 3.50 30.727 28.706 29.211
M36 36.0 4.00 33.402 31.093 31.670
M39 39.0 4.00 36.402 34.093 34.670
M42 42.0 4.50 39.077 36.479 37.129
M45 45.0 4.50 42.077 39.479 40.129
M48 48.0 5.00 44.752 41.866 42.857

Countersunk Holes Used in Magnets

Counterbored Holes Dimensions (metric)

METRIC SOCKET-HEAD CAP SCREWS

SCREW DIA COUNTERBORE DIA COUNTERBORE DEPTH COUNTERSINK DIA CLEARANCE DIA (NORMAL FIT) CLEARANCE DIA (CLOSE FIT)
M1.6 3.50mm 1.6mm 2.0mm 1.95mm 1.80mm
M2 4.40mm 2mm 2.6mm 2.40mm 2.20mm
M2.5 5.40mm 2.5mm 3.1mm 3.00mm 2.70mm
M3 6.50mm 3mm 3.6mm 3.70mm 3.40mm
M4 8.25mm 4mm 4.7mm 4.80mm 4.40mm
M5 9.75mm 5mm 5.7mm 5.80mm 5.40mm
M6 11.20mm 6mm 6.8mm 6.80mm 6.40mm
M8 14.50mm 8mm 9.2mm 8.80mm 8.40mm
M10 17.50mm 10mm 11.2mm 10.80mm 10.50mm
M12 19.50mm 12mm 14.2mm 13.00mm 12.50mm
M14 22.50mm 14mm 16.2mm 15.00mm 14.50mm
M16 25.50mm 16mm 18.2mm 17.00mm 16.50mm
M20 31.50mm 20mm 22.4mm 21.00mm 20.50mm
M24 37.50mm 24mm 26.4mm 25.00mm 24.50mm
M30 47.50mm 30mm 33.4mm 31.50mm 31.00mm
M36 56.50mm 36mm 39.4mm 37.50mm 37.00mm
M42 66.00mm 42mm 45.6mm 44.00mm 43.00mm
M48 75.00mm 28mm 52.6mm 50.00mm 49.00mm

How to choose and buy a strong neodymium magnet? ALBMagnets is a professional company for strong magnet design and manufacturing,
providing you with reliable N35, N38, N42, N52, N42SH and other grade super neodymium magnets and SmCo rare earth magnets.

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