HT Allen Hex Socket Button Head Screw:M16 x 40 - ISO 7380/12.9/Black/Full Thread

This high-strength fastener is an M16 x 40 Allen hex socket button head screw manufactured from steel. It conforms to the ISO 7380 standard and carries a property class of 12.9, indicating high mechanical strength suitable for demanding structural loads. The screw features a full thread design and a black surface finish, providing consistent engagement throughout the length. Buyers select this item for applications requiring robust clamping force where space constraints favor a low-profile button head over standard hex heads. When choosing, verify the M16 nominal diameter and 40 mm length to match your assembly dimensions, ensuring the 12.9 grade meets your load requirements.