... .thickness:5mm BS1139 Swivel Clamp/BS1139 Pressed Swivel Coupler/BS1139 Pressed Rotation Coupler Size48.3 mm ... forged and pressed scaffolding couplers/clamps, such as double/fixed coupler, swivel coupler, fixed/swivel beam/grider coupler, putlog coupler, plank coupler, sleeve coupler, joint pin, single coupler ... hex nut, flange nut.+Our pressed fixed/swivel clamp has SUV certificate.+The surface finish ...