This specification covers the chemical and mechanical requirements of three grades of carbon steel bolts and studs in sizes 1/4" through 4".
The term studs includes stud stock, somethimes referred to as threaded rod. This specification does not cover requirements for machine screws, thread cutting/forming screws, mechanical expansion anchors or similar externally threaded fasteners.
Suitable nuts are covered in Specificaiton A563. Unless otherwise specified, the grade and style of nut for each grade of fastener, of all surface finishes, shall be as follows:
    Fastener Grade and Size                                                 Nut Grade and Style
       A, C, 1/4" to 1-1/2"                                                              A, hex
       A, C, over 1-1/2" to 4"                                                         A, heavy hex
       B, 1/4" to 4"                                                                         A, heavy hex

 
Feature:
 

Advantage

1. Competitive price; 2. OEM service available

Packing

Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand

Payment terms

FOB, CIF, CFR, L/C, or others.

Delivery method

by sea, by air or by express service

Application

Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind  Energy; Mechanical Machine; Automobile: Home Decorating and etc.