Hot Dip Galvanized Hex Bolt

Product Details

Hot Dip Galvanized Hex Bolt is selected against the approved joint drawing and service conditions.

The former standalone ASTM A325 and A490 specifications were replaced by ASTM F3125/F3125M; A325 and A490 remain grade designations. Confirm the requested edition, grade, type, units and bolt geometry separately from DIN, ISO or GB products. The size and finish lists on this page describe the product family, not every permitted standard, grade and coating combination.

For structural bolting, confirm that hot-dip galvanizing is permitted for the selected grade, type and edition, with compatible coated nuts, thread allowances, lubrication and required assembly testing. The current supply reference is DIN 931 / DIN 933 / ISO 4014 / ISO 4017 / ASTM A307 / ASTM F3125/F3125M Grade A325 (edition and compliance to confirm), with Carbon Steel / Alloy Steel, HDG, and M8–M64/4.8-10.9.

Final dimensions, tolerances, grade or class, coating system, matched components, inspection documents and packing must be confirmed against the purchase order, approved drawing or project specification before production.

Selection & Use Steps

Identify the governing standard, edition, grade or class, type and unit system.
Confirm bolt head geometry, diameter, thread, length, grip and compatible nuts and washers against the joint drawing.
Check whether the requested coating is permitted for that specific grade, type and edition; identify its specification and required qualification.
Confirm thread allowances, lubrication and applicable assembly tests and inspection documents.
Agree the installation and acceptance procedure before supply.

Technical Drawing

Hex-head bolt technical catalog sheet with head-specific dimensions and reference geometry

The side elevation uses under-head length l, excluding the head. Confirm thread diameter d, thread length b, head height k and width across flats s in the separate end view. Partial thread is illustrated; full-thread, fine-thread and other variants require confirmation against the selected standard.

The illustration is a dimension-selection reference, not a manufacturing drawing and not to scale. Final geometry, tolerances, material, finish and mating-part fit must follow the buyer-approved drawing and applicable standard.

Application Environment

Assess moisture, salt, chemicals, temperature and dissimilar-metal exposure against the project requirements. A finish name alone does not establish service life or suitability.

Installation & Handling Precautions

Verify product markings, standard, grade and compatible bolt, nut and washer components before assembly.
Protect the specified coating and lubrication; do not recoat, relubricate or substitute components without the required approval.
For galvanized assemblies, confirm coated-thread fit and the specified nut lubrication and assembly-testing requirements.
For pretensioned structural joints, follow the governing pre-installation verification, tightening and inspection procedure.
Do not use a generic torque value; the approved procedure depends on the actual assembly and joint.

RFQ Checklist

Product: Hot Dip Galvanized Hex Bolt
Required standard, edition, grade or class, type and inch or metric units; identify any legacy ASTM designation
Approved bolt geometry, diameter, thread, length and grip; matched nuts and washers
Requested finish and coating specification; confirm permission for the selected grade and edition
Coated-thread allowances, lubrication, coating qualification and assembly tests where required
Quantity, packing, inspection documents and product identification
Application, destination and approved joint drawing or project specification

Product reference gallery

Form and finish reference; final compliance follows order documents.

Ordering framework

Confirm the specification before quotation.

This product page identifies the available product family and basic supply range. Final compliance depends on the exact standard, grade, dimensions, finish, mating components, tests and documents stated on the purchase order or approved drawing.

01Standard and editionState the governing product standard, drawing or approved equivalent.

02Grade and classConfirm material grade, property class, condition and any supplementary requirement.

03Size and threadDiameter, pitch or TPI, thread series, fit or tolerance and handedness where applicable.

04Length and geometryOverall or effective length, head or end style, thread length and drawing dimensions.

05Finish and assemblyCoating standard, thickness or color, lubrication and mating-part compatibility.

06Quantity and evidenceLot quantity, packing, marking, MTC, inspection scope and destination requirements.

Request this product with a complete specification.

Product · standard · grade · dimensions · finish · quantity · documents · destination

Attach drawings or a size list in your email or WhatsApp conversation. State any required tests or documents for confirmation.

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