• Product Item : S05CMC001
• Category： Combination Screw
• Available Material: Carbon steel, Stainless Steel, Brass, etc. OEM according to your request
• Head types: Hex, Pan, Truss, Countersunk, Button，Flat, Oval, etc. Drive types: Allen hex socket, cross recess, torx, slotted, etc. OEM according to your request
• Thread size: ST1, ST2, ST, M1, M2, M3, etc. Length: 6mm, 8mm, 10mm, 1/4'', 3/8'',1/2'',etc. OEM according to your request
• Finishing: Blue Zinc plated, White Zinc plated, Nickel plated, Black Oxide, Decromet, Plain, Customized

What is a combination screw?

Combination screws are usually combined with machine screws and the washer, which can be flat washer only or flat washer and spring washer together. 

Overall, combination screws are widely used in electrical, mechanical, electronic, household appliances, furniture, ships, etc. 

High strength hexagonal head bolt combination screws are mainly used for steel structures, such as railway and highway bridges, boiler steel structures, industrial factories, high-rise civil buildings, tower and mast structures, lifting machinery, and steel structures that require the use of friction type high-strength bolt combination screws.