Tension Control Bolt Assembly & Mdash Coarse Thread, Plain, ASTM A325 Type 1 F1852 Bolts

• Material: Carbon Steel
• Connection: Common Bolt
• Standard: DIN, ANSI, GB, JIS, BSW, GOST
• Application: Machinery
• Available Material: Carbon Steel, High Strength Steel, Stainless Steel
• International Standard: DIN, ANSI, GB, JIS, Bsw
• Used: Machinery, Chemical Industry, Environmental
• Trademark: HN
• Specification: M4-M100
• HS Code: 731815

• Type: Round Head
• Head Style: Round Head
• Grade: 8.8
• Finish: Black
• Head Type: Hexagon, Round, Square, Countersunk, Pan, Mushroom
• Class/Grade: 3.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9
• Surface Finishing: Hot Galvanizing, Black, Color-Zinc, Blue-White Zin
• Transport Package: 20-25kg/Carton+900kg/Pallet
• Origin: China

ASTM A325 is an ASTM International standard for heavy hex structural bolts, titled Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. It defines mechanical properties for bolts that range from ¹â„₂ to 1-¹â„₂ in diameter.^[1]

The equivalent metric standard is ASTM A325M, which is titled Standard Specification for Structural Bolts, Steel, Heat Treated 830 MPa Minimum Tensile Strength. It defines mechanical properties for sizes M12-36.^[2]

There is also a T version, which is used to refer to fully threaded bolts.^[3]

This is a standard set by the standards organization ASTM International, a voluntary standards development organizations that sets technical standards for materials, products, systems, and services.

In 2016, specifications A325 and A490 were officially withdrawn by ASTM and replaced by ASTM F3125. A325 and A490 heavy hex structural bolts are now grades under the new F3125 specification.