SEMS Screw

SEMS screws combine two or more separate parts into one pre-assembled, low cost fastener. With washers under the head, SEMS screws are fast, permanent, and easily adaptable to many applications. Commonly assembled washers include flat washer, split lock washer, square conical washer, internal/external tooth lock washer.

JIS B1188

SEMS Screws

SEMS Screws

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