Self-countersinking nibs under head insure seating of screw head flush with work surface

7/8-9 x 3 3/4 Hex Cap Screw SS 316 (A4)

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1-8 x 2 Socket Set Screw Cup Point Alloy Hex Washer Head Metal-Panel Screws 316 Stainless Steel with EPDM Washer Self-countersinking nibs under head insure1 8 x 2 Socket Set Screw Cup Point Alloy . A headless screw threaded the entire length. It has a hexagonal drive at one end and a cup shaped indentation at the other end. The cup point is the most used style set screw. Designed for fast, permanent and semi permanent location of parts on shafts with hardness differential of 10 15 Rockwell C points and where cutting in of cup edge on the shaft is acceptable. Hardness: Rockwell C45 53.