Carriage Bolt with Round Head

Carriage Bolt with Round Head, Carriage bolt with round head, square neck under the head, and a unified thread pitch, heavy construction Structural A307 Bolts, American Standard Carbon Steel Heat Treated Carriage Bolts China Supplier

Product name Carriage Bolt with Round Head
Carriage bolt with round head, square or ribbed neck under the head, and a unified thread pitch. Ideal for applications of fastening metal to wood.
Material: Available in steel (A307, GR.5, GR.8) or stainless steel (18-8/304 or 316)
Size range: From #10, 1/4″ to 3/4” diameter
Length: standard options
Finishes: plain, galvanized or zinc plated
Thread: American Standard, Metric, Custom and Specialty

GOVERNING STANDARDS
ASTM A307 – Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength
ASTM A193 – Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications
ASTM A325 – Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength
ASTM A490 – Standard Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength
DIN 6914 10 – Heavy Hexagon Structural Bolts

ASTM A307 SIZES & SPECIFICATIONS
The ASTM A307 specification covers carbon steel bolts, rods/studs and anchor bolts ranging from 1/4″ through 4″ diameter. This is your everyday, run of the mill bolt specification often manufactured using A36 round bar. They have a low hardness and tensile requirements and are generally used in low-pressure, standard or normal temperature applications There are three grades A, B, and C* which denote tensile strength, configuration, and application.

You will often hear about A307 and Grade 2 bolts as being equivalent. While they are small differences they each are referred to as “low carbon” fasteners. A307 is an ASTM (industrial) spec, while Grade 2 is an SAE J429 Grade 2 (automotive) spec. A325TC Flat Bolt with Nut Washer

WE CARRY A FULL LINE FINISHED IN
Plain
Zinc
Hot-dipped galvanized.

Ningbo WINDO Metal Co.,Ltd established on the basic principles of Standard System(DIN, ANSI, ASTM, JIS, BSW, EN etc) by various materials(carbon steel, alloy steel etc) and through years of continuous improvement, We has developed unmatched expertise and competence in cold heading, heat treatment of fasteners and other metal parts. We are able to manufacture all kinds of fastener like Stud Bolt, Hex Bolt, Flange Bolt, Hex Nut And Flange Nut, Flat washer and Spring Washer, Non-Standard Products. We are committed to satisfying our customers. We take great pride in the quality of our products and strive to be good corporate citizens. Now we have gained close cooperation with clients from South Korea, Middle east, Europe, India, and South America.

Our tagline, “FOEGED FROM INTERGRITY,BUILT FROM SECURITY” sums up the WINDO METAL business philosophy. First and foremost is the strict product quality our fasteners must meet. We follow customer and industry standards and procedures that maximize levels of quality, minimize variation, and enhance our ability to delight our customers. Our customers are the cornerstone of our business ecosystem.