A490 bolts are similar in application and dimensions to A325 heavy hex structural bolts but are made from alloy steel rather than medium carbon steel, resulting in a higher strength fastener. The A490 specification is applicable to heavy hex structural bolts only.

Choose from our selection of grade A490 bolts, including hex head screws, socket head screws, and more. Same and Next Day Delivery.

AFT Fasteners provides a helpful resource on A325 & A490 bolts including: dimensions, material, hardness, proof load, yield strength and tensile strength.

ASTM A490 - Standard Specification for Structural Heavy Hex Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength with Type 1 & Type 3 Weathering Steel Bolting Class. This specification covers two types of bolting grades quenched and tempered, manufactured from high strength alloy steel.

Mar 8, 2023 · The short answer is that F3125 Grade A490 heavy hex structural bolts have higher strength requirements than A325 heavy hex structural bolts. A325 bolts have a minimum tensile strength of 120ksi while A490 bolts have a tensile strength range of 150-173ksi.

ASTM A490 and ASTM A490M are ASTM International standards for heavy hex structural bolts made from alloy steel.

ASTM A490 Type 1 is a high tensile bolting grade manufactured from high tensile alloy steel intended for use in structural connections. Type 1 Bolts are produced from 1/2" to 1-1/2" in imperial size as per ASTM A490 & from M12 to M36 in metric size as per ASTM A490M.

ASTM A490 Type 3 is a high tensile bolting grade manufactured from weathering steel intended for use in structural connections. These type 3 bolts have higher strength than type 1 bolts. Type 3 Bolts are produced from 1/2" to 1-1/2" in imperial size as per ASTM A490 & from M12 to M36 in metric size as per ASTM A490M.

Nov 28, 2014 · 1.1 This specification covers two types of quenched and tempered, alloy steel, heavy hex structural bolts having a tensile strength of 150 to 173 ksi. 1.2 These bolts are intended for use in structural connections.

Allfasteners maintains an extensive inventory of A490 bolts coated in accordance with ASTM F2833-11 using the Magni 565 two-coat system. This coating is tested to perform according to ASTM B117 for a 1000 hour salt spray rating, and is RoHS compliant.