HIGH STRENGTH STRUCTURAL BOLTS, NUTS, WASHERS
Structural bolts are used for applications which require extremely high strength fastening – mostly steel to steel. The fasteners used in structural applications are often shorter, wider and have a larger bearing surface to increase their load-bearing abilities. Structural bolts and nuts from Metalloy Fastener Industries comply with national and international standards like the ISO and ASTM. The material are stainless steel, Low alloy steel, and carbon steel. Carbon and Low alloy steel Materials are Hot Dip Galanized, or other protective Coated for improved durability. We also provide custom structural fasteners like washers for your bolts. Our fasteners capability have a wide range of dimensions for all your requirements.
Bolt Specifications
- ASTM A193 Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
- ASTM A307 Carbon steel bolts and studs, 60,000 psi tensile strength.
- ASTM A320 Alloy steel and stainless steel bolting materials for low temperature service.
- ASTM A325 Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength. Replaced by ASTM F3125.
- ASTM A354 Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
- ASTM A449 Quenched and tempered steel bolts and studs for general use.
- ASTM A490 Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength. Replaced by ASTM F3125.
- ASTM F593 Stainless steel bolts, hex cap screws, and studs.
- ASTM F1554 Anchor bolts designed to anchor structural supports to concrete foundations.
- ASTM F3125 New, unified structural bolt specification replacing A325, A325M, A490, A490M, F1852, and F2280
Nut Specifications
- ASTM A194 Carbon and alloy steel nuts for bolts for high pressure and high temperature service.
- ASTM A563 Standard specification for carbon and alloy steel nuts.
- ASTM F594 Stainless steel nuts.
Washer Specifications
- ASTM F844 Unhardened, general purpose, flat washers.
- ASTM F436 Hardened steel washers.
- ASTM F959 Compressible washer type direct tension indicators (DTIs) in diameters 1/2 to 1-1/2 inches
- ASTM F2437 Compressible washer type direct tension indicators (DTIs) in diameters 1/4 to 2-1/2 inches
Our fasteners meet the quality standard from Bureau of Indian Standards for Carbon, low alloy steel with high tensile /yield fasteners.
- IS 1363 : 1992
- IS 1367 : 1994
- IS 4206 : 1987