Qbh ASTM A325 A325m HDG Yzp Black Zp Plain Zinc Full Half Thread 2h Nut F436m Washer Heavy Hexagon Hex Head Industry Construction Building Material Formwork

Basic Info.

Model NO.	QBH-ASTM A325
Feature	with 2h Nut F436m
Usage 1	Steel Structure Bolt
Transport Package	25kgs/Box, Bulk in Pallet
Specification	1/2"---1-1/2", M12-M36
Trademark	QBH
Origin	China
HS Code	73181500
Production Capacity	500tons/Year

Product Description

QBH ASTM A325 A325M HDG YZP BLACK ZP Plain Zinc Full Thread /Half Thread 2H Nut F436m Washer Heavy Hex Industry BuildingConstruct 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Formerly under the jurisdiction of Committee F16 on Fasteners, this specification was withdrawn in May 2016 and replaced by Specification F3125/F3125M for High Strength Structural Bolts, Steel and Alloy Steel, Heat Treated, 120 ksi (830 MPa) and 150 ksi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 forstructural joints, such as mating I-beams and scaffolding. Material meets ASTM F3125specifications for quality. Dimensions meet ASME B18.2.6 specifications. Partially threaded screws come with precise threaded and unthreaded portions, allowing you to placeonly the stronger unthreaded portion (grip) in joints subjected to sideways forces.Hot-dipped galvanized screws have a thick coating for excellent corrosion resistance. To ensurecompatibility, use these screws with hot-dipped galvanized steel nuts.ASTM A325M structural bolts are designed for steel to steel connections. Because they are used insuch a specific application, they have dimensional characteristics that are unique and limited comparedto most other fastener grades. This includes stock sizes available in the market place, length tolerances,short thread lengths, and the actual head dimensions are the same as any heavy hex head bolt(Dimensions per ASME B18.2.6M 2012).ASTM A325M covers high strength structural bolts used in structural steel connections. A325Ms havea heavy hex head, a full body diameter, and are normally short in overall length since they are connectingsteel to steel. Unlike other ASTM grades, A325M is specific not only in the chemical and mechanicalrequirements, but also in the allowed configuration. These bolts are manufactured from a medium-carbonor medium-carbon alloy steel that is quenched and tempered to develop the desired mechanical properties.
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