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and the bonded NEO EPDM washer provides a watertight seal
This 1/4-20 x 4 1/2" slotted indented hex washer head machine screw is fully threaded and made of zinc
Its partial threading allows for secure fastening in a variety of materials
The square pan head provides a large surface area for driving the screw
It meets the specifications of IFI-111 and ASTM A325 and is Grade 8 for superior strength and durability
5/16-18 x 3/4 Coarse Thread Socket Set Screw Cup Plain ABPU188 and the bonded NEO EPDMThe 5 16 18 x 3 4 Coarse Thread Socket Set Screw Cup Plain is a small, cylindrical fastener with a hexagonal head and a threaded interior. It is made of steel and has a plain finish. The screw cup is designed to be used with a socket head cap screw, which is inserted into the cup and tightened to secure the screw in place. The coarse threads on the screw cup provide a strong hold, making it ideal for use in applications where vibration or loosening is
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