QBH ASTM A325 A325M HDG YZP BLACK ZP Plain Zinc Full Thread / Half Thread 2H Nut F436m Washer Heavy Hex Industry Building Construct Structural Bolt A325/A325M History This specification covers two types of quenched and tempered, steel, metric heavy hex structural bolts having a minimum tensile strength of 830 MPa (Note 1). Formerly under the jurisdiction of Committee F16 on Fasteners, this specification was withdrawn in May 2016 and replaced by Specification F3125/F3125M for High Strength Structural Bolts, Steel and Alloy Steel, Heat Treated, 120 ksi (830 MPa) and 150 ksi (1040 MPa) Minimum Tensile Strength, Inch and Metric Dimensions. Specification F3125/F3125M supersedes and replaces specifications; A325, A325M, A490, A490M, F1852 and F2280. The unified Specification F3125/F3125M corrects known inconsistencies in the original documents and the combination will assure that requirements of the products covered under the original standards stay aligned. ASTM Standards A153/A153M Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware A563M Specification for Carbon and Alloy Steel Nuts (Metric) A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel D3951 Practice for Commercial Packaging F436M Specification for Hardened Steel Washers (Metric) F606M Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, and Rivets (Metric) F788/F788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series F959M Specification for Compressible-Washer-Type Direct Tension Indicators for Use With Structural Fasteners (Metric) F1136M Specification for Zinc/Aluminum Corrosion Protective Coatings for Fasteners (Metric) F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection F1789 Terminology for F16 Mechanical Fasteners G101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels ASME Standards B1.13M Metric Screw Threads B18.18.3M Inspection and Quality Assurance for Special Purpose Fasteners B18.2.3.7M Metric Heavy Hex Structural Bolts B18.24 Part Identifying Number (PIN) Code System Standard for B18 Fastener Products Note: In 2016, ASTM A325M was officially withdrawn and replaced by ASTM F3125, in which A325M now becomes a grade under the F3125 specification. The F3125 specification is a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852, and F2280. We are choosing to keep this technical information about the now obsolete A325M specification on our website for reference and informational purposes only. STYLE Heavy Hex Bolts and Nuts STANDARD ASTM A325 A325m Brand QBH Model No. QBH-A325 Series , QBH-A325M Web qbfastener.en.made-in-china.com SIZE 1/2"---1-1/2" , M12-M36 CLASS(Carbon steel) 8.8,10.9,12.9 Coating(Carbon steel) black, zinc, HDG, Heat treatment, Dacromet, GEOMET MATERIAL Carbon steel PACKING bulk/ boxes in cartons, bulk in polybags/ buckets, etc. PALLET solid wood pallet, plywood pallet, ton box/bag, etc. Product Description The most common heavy hex head screw, these steel screws meet ASTM A325 regulations for structural joints, such as mating I-beams and scaffolding. Material meets ASTM F3125 specifications for quality. Dimensions meet ASME B18.2.6 specifications. Partially threaded screws come with precise threaded and unthreaded portions, allowing you to place only the stronger unthreaded portion (grip) in joints subjected to sideways forces. Hot-dipped galvanized screws have a thick coating for excellent corrosion resistance. To ensure compati