High Tensile Hex Flange Bolts DIN6921 Diameter: M3-M30, Length 8-500mm Surface : Black Oxided Zinc plated, Dacromet, Hot Dip Galvanized, Black Polished Material: Carbon Steel Alloy Steel Grade:4.8,8.8,10.9,12.9 Standard Supply: DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc Non-standards: OEM is available, according to drawing or samples Package: Box or Bulk in master cartons, then on […]
A307 Grade B Heavy Hex Bolts Coarse Plain, HEAVY HEX BOLTS A307 GRADE B, Heavy Hex Bolts, A307 Grade B, HDG (inch), Bolts – ASTM A307 Grade B, Nuts -ASTM A563, Grade A, ASTM A307 Grade B Bolts China supplier factory
1/2″-13×1-1/2″ (FT) A307 Grade B Heavy Hex Bolts Coarse Plain (300/Bulk Pkg.)
Chemical analysis shall be performed in accordance with ASTM A751
DIMENSIONAL DATA: Unless otherwise specified, threads shall be the coarse threaded series as
specified in the latest issue of ANSI / ASME B1.1, page A-26. Having a class 2A tolerance. Grade B Bolts
shall have Heavy Hex Bolt Dimensions as given in the latest issue of ANSI / ASME B 18.2.1, page C1.
Unless otherwise specified Grade B Bolts should be used with Heavy Hex Nuts.
ADDITIONAL INFORMATION: Additional information can be found in ASTM A307-07B, ASTM A563-04A.
Package Quantity: 300 Package Size: Bulk Length: 1-1/2″ Measurement Type: Inch Material: Low Carbon Steel Thread Style: Fully Threaded Grade: B Specifications: A307 Thread: UNC Diameter-Thread Size: 1/2″-13 Finish: Plain Product Type: Heavy Hex Structural Bolt Diameter: 1/2″ Hex: Hex
Heavy Hex Bolts, A307 Grade B, HDG (inch)
Grade B, A307 heavy hex bolts are externally threaded fasteners made of carbon steel. Bolts designated as heavy hex bolts are very similar to standard hex bolts however the head size across the flats and across the corners is larger providing a broader bearing surface. Hex bolts with hot dip galvanized processing, provide additional protection against corrosion.
Heavy hex bolts fall under The American Society of Mechanical Engineers’ (ASME) standard category “Bolts, Studs and Threaded Rod”. These bolts are fully threaded or partially threaded depending on the length with a six sided, hexagonal head.
The ASME standard covers hex bolt dimensional specifications designated by ASME B18.2.1. The Society of Automotive Engineers (SAE) and American Society for Testing and Materials (ASTM) govern the chemical and mechanical specifications included in ASME B18.2.1. ASTM A193 Stainless Steel Bolts
Heavy Hex Bolt Specifications
ASME B18.2.1 – Bolt, Stud and Threaded Rod Dimensions
Body Diameter (E) Bolt Length (L)
Head Height (H) Radius of Fillet (R)
Thread Length (LT) Transition Thread Length (Y)
Width Across Flats (F) Width Across Corners (G)