HT Allen Hex Socket Button Head Screw:M6 x 40 - ISO 7380/12.9/Black/Full Thread

This high-tensile fastener is a steel button head screw featuring an M6 nominal diameter and a 40mm nominal length. It is manufactured to the ISO 7380 standard and designated with a property class of 12.9, indicating high strength suitable for demanding structural applications. The screw includes a black surface finish and full thread coverage, allowing for secure engagement across the entire shank length. Buyers select this item for its combination of high-load capacity and compact head profile, which minimizes the risk of cross-threading during assembly. When choosing specifications, verify that the 12.9 grade meets your load-bearing requirements and ensure the full thread length accommodates your clamping distance and nut configuration.