Q: What do these washers do?
They give a rare-earth magnet a flat steel surface to grip, forming the contact point in a magnetic fastening system.
99K3261 - 3/8" Washer for 1/4" Magnet
Outside Diameter:
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Made to strict standards of flatness and accuracy, our steel washers make ideal contact points for magnetic fastening systems.
The four smaller sizes are 3/32" thick and have a 1/8" dia. hole countersunk for a #4 screw, while the three larger sizes are 5/32" thick and countersunk for a #10 screw. The outside diameters are slightly undersize and match their respective cup, so that the same size of drill bit can be used for counterboring both when you want them flush mounted.
Can be installed with machine screws for improved pull-out strength. Sold individually. Made in Canada.
They give a rare-earth magnet a flat steel surface to grip, forming the contact point in a magnetic fastening system.
The four smaller washers are countersunk for a #4 screw, and the three larger ones for a #10 screw.
The smaller sizes are 3/32" thick and the larger sizes are 5/32" thick.
Yes, installing the washers with machine screws improves their pull-out strength.
| Materials | Steel |
| Dimensions | 3/8", 1/2", 5/8", 3/4", 7/8" or 1 1/8" O.D. |
| Compatibility | Fits our rare-earth magnet cups (1/4" to 1" magnets); uses #4 or #10 screws |
| Includes | Steel washer |
| Package Quantity | 1 item |
| Country of Origin | Canada |
| Warranty | Lee Valley Satisfaction Guarantee |
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Steel Washers for Rare-Earth Magnets
Made to strict standards of flatness and accuracy, our steel washers make ideal contact points for magnetic fastening systems.
The four smaller sizes are 3/32" thick and have a 1/8" dia. hole countersunk for a #4 screw, while the three larger sizes are 5/32" thick and countersunk for a #10 screw. The outside diameters are slightly undersize and match their respective cup, so that the same size of drill bit can be used for counterboring both when you want them flush mounted.
Can be installed with machine screws for improved pull-out strength. Sold individually. Made in Canada.
