Material:
Alloy steel (10.9 grade), carbon steel, stainless steel (SS304 / SS316, A2-70 / A4-70)Applicable Standard:
ISO 7380, GB, JIS, plus DIN equivalentsSize:
M3–M16 (Imperial #4–1/2″ available)Head Type:
Low-profile dome / button head; flanged version availableSurface Finish:
Black oxide, zinc plated, nickel plated, Dacromet, passivated (stainless)Tensile strength:
Class 10.9 ≥ 1040 MPa; stainless A2-70 / A4-70 ≥ 700 MPaApplication:
Visible and decorative assemblies, electronics, equipment covers and enclosures, light machinery, and consumer products where a smooth, low-profile look is desired.Socket button head cap screws feature a low-profile, rounded (dome) head with an internal hex drive. The wide, smooth head offers a clean, decorative appearance and a larger bearing surface, making them a popular choice where looks, clearance, and a finished surface matter. Note that the lower head height makes them suited to light-to-medium loads rather than maximum-strength structural joints.