a490 bolts

Original video found at https://www.youtube.com/watch?v=OpKwdzGLbjc.Load & Resistance Factor Design Specification for Structural Joints Using ASTM A325 or A490 Bolts: Approved by the Research Council on Structural Conn. Hardcover More Buying Choices $4.98 (2 used offers).ASTM A490 fasteners astm a490 scope. The ASTM A490 specification covers quenched and tempered, alloy steel, heavy hex structural bolts from 1/2" diameter through 1-1/2" diameter with a minimum 150 ksi tensile. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts.The ASTM A490 is a specification for the bolts set by the ASTM International, a voluntary standards development organizations that sets technical standards for materials. ASTM A490 covers heavy hex structural bolts from 1/2 inch diameter through 1-1/2 inches diameter and are made of alloy steel."A490 bolts are more susceptible to brittle fracture than A325 bolts, which are 120/105 minimum tensile steel strength," the FHA says, quoting the Guide to Design Criteria for Bolted and Riveted Joints. "The use of A490 bolts should be thoroughly evaluated prior to being included in a structure."Author’s Note: In 2016, ASTM A325 and A490 were replaced by ASTM F3125. A325 and A490 are now grades under the F3125 specification. When reading this blog, please note that when we discuss "A325" and "A490" structural bolts, we are specifically discussing the grades of F3125 structural bolts. A325 bolts require a washer under the element (head or nut) being turned to tighten the bolt (shown under the nut, above right) A490 bolts require a washer under both the head and nut (AISC& NISD2000) Washers 7 Grip is the distance frombehind the bolt head to the back of the nut or washerheavy hex structural bolts, A490, Type 1, ASTM A563 Grade DH Heavy Hex Nut, Plain The information below lists the required dimensional, chemical and physical characteristics of the products in this purchase order.A490 Bolts Similar to the A325 ASTM standard, A490 bolts are used in steel to steel structural connections and applications and thus have shorter thread lengths than regular hex bolts. This keeps threads out of the joints in the connections.