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.

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 - 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.

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.

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.

50% stronger than our medium-strength steel heavy hex head screws, these steel screws meet ASTM A490 regulations for structural applications, such as mating I-beams and scaffolding. Use them in joints that require more tensile strength than ASTM A325 screws.

F3125 grade A490 is a very high strength structural bolt with a 150ksi minimum tensile. An A325(M) bolt is also structural, but only has a 120ksi minimum tensile. They should not be substituted without proper authorization from the project engineer.

Jun 9, 2021 · ASTM F3125 Grade A325 bolts and A490 bolts are two of the main types of structural bolts we sell, and they are the two you will most often see on a jobsite. The difference in grades A325 and A490 may seem simple. A490 is stronger than A325. That said, plenty of projects call for A325 bolts.