Screw: hexagon socket set

ISO 4027

ISO 4027 - Hexagon socket set screws with truncated cone point

Automatically build standard products in SOLIDWORKS with TSFP.

Hexagon socket set screws with a truncated cone point, the ISO standard that replaced DIN 914; the flat, dog and cup point versions are ISO 4026, ISO 4028 and ISO 4029. The headless screw holds a hub, a collar, a gear or a lever on a shaft: the cone point bites into the shaft, or into a spot drilled for it, and keeps the part from turning and sliding. The screw is threaded over its whole length and driven by a hexagon key in the socket of its flat end, so it sinks fully into its hole and nothing stands proud. The point is a cone of 90 degrees with a small flat at the tip; on short screws, up to a length that depends on the size, the cone and the chamfer at the socket end are 120 degrees and the socket is shallower. Steel screws are made to hardness class 45H and stainless steel ones to classes A1-12H, A2-21H, A3-21H, A4-21H and A5-21H; the thread is ISO metric coarse with tolerance 6g and the product grade is A. Covers threads M1,6 to M24 with lengths from 2 to 60 mm.