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Hex Head External Tooth Machine Screw SEMS, Zinc Plated

SEMS, External Tooth, Hex Head

Also known as:  

Machine Screws with Lock Washers

SEMS are machine screws with free-turning captive lock washers—external tooth and internal tooth lock washers are common. The screw/washer assembly saves time when compared to using individual screws and washers. Internal SEMS, which have an internal tooth lock washer, are preferred when it is desirable to hide the teeth. The larger radius of an External SEMS, though, provides greater locking action. Length is measured from under the head.

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Code Product Qty. Package Qty. Carton  
SC172-5533 6-32 x 1/4" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC172-6533 6-32 x 3/8" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC172-7533 6-32 x 1/2" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC172-1533 8-32 x 1/2" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-5523 10-24 x 1/2" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-6523 10-24 x 5/8" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-8513 10-32 x 1/4" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-9513 10-32 x 5/16" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-0513 10-32 x 3/8" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-1513 10-32 x 1/2" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-8523 1/4-20 x 3/8" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-9523 1/4-20 x 1/2" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-0523 1/4-20 x 5/8" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-1523 1/4-20 x 3/4" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-2523 1/4-20 x 1" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC162-3523 1/4-20 x 1 1/4" Hex Head External Tooth SEMS Machine Screw, Zinc Plated
SC172-4533 1/4-20 x 1 1/2" Hex Head External Tooth SEMS Machine Screw, Zinc Plated