In 2016, specifications A325 and A490 were officially withdrawn by ASTM and replaced by ASTM F3125. A325 and A490 heavy hex structural bolts are now grades under the new F3125 specification. Summaries of the now obsolete A325 and A490 specifications remain on our site for reference purposes only.
This specification covers the chemical, physical and mechanical requirements for structural bolts manufactured from steel and alloy steel, in two strength grades, two styles and two types. This specification is a consolidation of and replacement for six ASTM standards ranging from 1/2″ through 1-1/2″ diameter: A325, A325M, A490, A490M, F1852 and F2280. The main difference between this standard and the older, existing standards is that A325s from 1-1/8" to 1-1/2" now have the same mechanical requirements as A325s 1" and under. Previously the larger bolts had slightly lower requirements.
Our main products include:
---Standard fasteners: Bolts, Threaded Rods, Nuts, Washers, Retaining Rings, Pins, Rivets, Screws, Welds, Thread inserts
---Standards include: ANSI, ISO, DIN, GOST, JIS, BS etc.
---Materials include: Specialty Steel(MP35N, Hastalloy, Inconel, Monel), Stainless Steel, Carbon and Alloy Steel, ASTM A193, Grade B5/B7/B7M/B8/B8M/L7/B16; A194 Grade 2H/2HM
---Coatings include: Blue White Zinc, Yellow Zinc, Black Zinc, Black Oxide, Hot Dip Galvanized, PTFE, Mechanial Galvanized, etc.
---Non-Standard Customization Products According to Drawing
---CNC Machining parts, Casting, Forging, Turning, Milling, Stamping die casting parts
Audited Supplier 
){kind=link}
){kind=link}