... Surface Treatment: HDG &Electric Galvanized, Self Color6. With T-Bolt and regular nut and flanged nut7. Standard: BS1139&EN74 Class A&B8. ... scaffolding equipment. +We offer all range of drop forged and pressed scaffolding couplers/clamps, such as double/fixed coupler, ... ladder, adjustable u-head, universal jack, base plate, and accessories such as T bolt, eye bolt, hex nut, flange nut. +Our ...