M10 X 40 Countersunk Socket Set Screw BZP 10.9 High Tensile PK10
Big Bear Bolts
£1.29
BZP Countersunk Sockets are zinc plated. Countersunk and non-countersunk refers to the style of a screw's head. Countersunk is a head style that features tapering, thereby allowing it to be driven deeper into a workpiece's surface. Non-countersunk is a head style without tapering, resulting in the protrusion of the head. Property Class 10.9 bolts and screws have a minimum tensile strength of 1040 MPa for all sizes. Property Class 10.9 Bolts are considered high-strength parts . DIN7991
Big Bear Bolts's own words, read from their page.
Buy from BIG BEAR BOLTS LTDBIG BEAR BOLTS LTD is a UK retailer, not the maker. Price seen 2026-09-26. Not an affiliate link, we earn nothing from it.






