Square Head Bolts
Square head bolts are externally threaded fasteners, generally made from low or medium carbon steel. They have square-shaped external wrenching heads, which offer a large bearing area for positive gripping.
Sizes: ½” up to 3” diameter in lengths up to 30”
Grade: 2, 5 & 8, 304 x 316
Standard: ANSI B18.2.1
Sizes: 16mm up to 78mm diameter in lengths up to 600mm
Grade: 8.8, 10.9 & 12.9
Standard: DIN 478