--- title: "ASTM A325 Type 1 Heavy Hex Structural Bolts" description: "ASTM A325 Type 1 Heavy Hex Structural Bolts — Structural & Heavy Hex Bolts. Material: Carbon Steel. MOQ 10,000 pieces, US$0.12 – 1.20." url: https://engineeringhardware.com/product/astm-a325-type-1-heavy-hex-structural-bolts-2/ source: Engineering Hardware & Fasteners --- # ASTM A325 Type 1 Heavy Hex Structural Bolts [![ASTM A325 Type 1 Heavy Hex Structural Bolts](https://img.engineeringhardware.com/ASTM-A325-Type-1-Heavy-Hex-Structural-Bolts-2.webp)](https://img.engineeringhardware.com/ASTM-A325-Type-1-Heavy-Hex-Structural-Bolts-2.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Bolts › Structural & Heavy Hex Bolts](https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/astm-a325-type-1-heavy-hex-structural-bolts-2.md) Model no. **ASTM A325** US$0.12 – 1.20 / piece MOQ 10,000 pieces · Final price confirmed in your quote - **Head Style:** Hexagonal - **Finish:** Black - **Packing:** Cartons+Plastic Bags - **Head Type:** Hexagon Flange Head - **Surface Treatment:** Black Oxide - **Material:** Carbon Steel Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20ASTM%20A325%20Type%201%20Heavy%20Hex%20Structural%20Bolts%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fastm-a325-type-1-heavy-hex-structural-bolts-2%2F) Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order. ## Specifications | Model NO. | ASTM A325 | | --- | --- | | Head Style | Hexagonal | | Application | Machinery, Chemical Industry, Environmental, Building | | Finish | Black | | Packing | Cartons+Plastic Bags | | Head Type | Hexagon Flange Head | | Surface Treatment | Black Oxide | | Origin | Zhejiang, China | | Production Capacity | 100000 Piece/Pieces Per Month | | Customization | Available | | Material | Carbon Steel | | Type | Hexagon Head | | Category | [Structural & Heavy Hex Bolts](https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/) | ## Technical parameters | item | value | | --- | --- | | Finish | Plain | | Material | Steel | | Place of Origin | China | | | Zhejiang | | Model Number | ASTM A325 | | Surface treatment | Black Oxide | | Application | Industry | | Packing | Cartons+plastic Bags | | Head type | Hexagon Flange Head | ## Description ASTM A325 Type 1 Heavy Hex Structural Bolts is part of our structural & heavy hex bolts range (Bolts). ### Key details - **Type:** Hexagon Head - **Material:** Carbon Steel - **Head Type:** Hexagon Flange Head - **Head Style:** Hexagonal - **Surface Treatment:** Black Oxide - **Finish:** Black - **Application:** Machinery, Chemical Industry, Environmental, Building - **Packing:** Cartons+Plastic Bags Available configurations include head style, finish, packing, head type and surface treatment. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 10,000 pieces at US$0.12 – 1.20 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you. ## Frequently asked questions ### What is the minimum order quantity (MOQ) for ASTM A325 Type 1 Heavy Hex Structural Bolts? The listed minimum order is 10,000 pieces, at US$0.12 – 1.20 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size. ### What are the main specifications of ASTM A325 Type 1 Heavy Hex Structural Bolts? Type: Hexagon Head; Material: Carbon Steel; Head Type: Hexagon Flange Head; Head Style: Hexagonal; Surface Treatment: Black Oxide; Finish: Black. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include head style, finish, packing, head type and surface treatment. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing. ### What is the lead time and how is it shipped? Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment. ### Which other structural & heavy hex bolts are available? The Structural & Heavy Hex Bolts category lists 2,565 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/](https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/) How we work ## Specified, checked and shipped by Engineering Hardware & Fasteners Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing. - DIN, ISO, ASTM, ANSI, JIS and GB standard parts - Non-standard parts made to your drawing - Dimensions, thread gauges and plating checked before packing - Export cartons and pallets, consolidated mixed orders - Samples available for approval before mass production [![Production floor](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor-1024x683.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor.webp) Production floor [![Inspection bench](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench.webp) Inspection bench [![Sorting & packing](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing.webp) Sorting & packing [![Parts warehouse](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse.webp) Parts warehouse [![Sample review](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review.webp) Sample review [![Sales office](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office.webp) Sales office [More about us →](https://engineeringhardware.com/about/) · [Request a sample or custom quote →](https://engineeringhardware.com/contact/) ## Request a quote for this product ## Related products [All Structural & Heavy Hex Bolts →](https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/) [![Industrial Excellent Quality Good Sales Factory Direct Sales Alloy Steel Carbon Steel High Strength Bolt Bolts](https://img.engineeringhardware.com/Industrial-Excellent-Quality-Good-Sales-Factory-Direct-Sales-Alloy-Steel-Carbon-Steel-High-Strength-Bolt-Bolts.webp)](https://engineeringhardware.com/product/industrial-excellent-quality-good-sales-factory-direct-sales-alloy-steel-carbon/) Structural & Heavy Hex Bolts ### [Industrial Excellent Quality Good Sales Factory Direct Sales Alloy Steel Carbon Steel High Strength Bolt Bolts](https://engineeringhardware.com/product/industrial-excellent-quality-good-sales-factory-direct-sales-alloy-steel-carbon/) Carbon Steel, Alloy Steel, Stainless Steel, · Available **US$0.60 – 360.00**MOQ 10 pieces [![Hex Head Bolt/Hsfg Bolt with Nut and Washer Assembled (F10T/F8T) /HDG Bolt/En14399 Bolt](https://img.engineeringhardware.com/Hex-Head-Bolt-Hsfg-Bolt-with-Nut-and-Washer-Assembled-F10T-F8T-HDG-Bolt-En14399-Bolt.webp)](https://engineeringhardware.com/product/hex-head-bolt-hsfg-bolt-with-nut-and-washer-assembled-f10t-f8t-hdg-bolt-en14399-bolt/) Structural & Heavy Hex Bolts ### [Hex Head Bolt/Hsfg Bolt with Nut and Washer Assembled (F10T/F8T) /HDG Bolt/En14399 Bolt](https://engineeringhardware.com/product/hex-head-bolt-hsfg-bolt-with-nut-and-washer-assembled-f10t-f8t-hdg-bolt-en14399-bolt/) Hexagon Head · DIN, ANSI, GB, JIS **US$0.24 – 1.80**MOQ 1,000 sets [![Brand-New Hexagon Timely Delivery Heavy Hex Bolt for Tire Protection Chain Assembly](https://img.engineeringhardware.com/Brand-New-Hexagon-Timely-Delivery-Heavy-Hex-Bolt-for-Tire-Protection-Chain-Assembly.webp)](https://engineeringhardware.com/product/brand-new-hexagon-timely-delivery-heavy-hex-bolt-for-tire-protection-chain-assembly/) Structural & Heavy Hex Bolts ### [Brand-New Hexagon Timely Delivery Heavy Hex Bolt for Tire Protection Chain Assembly](https://engineeringhardware.com/product/brand-new-hexagon-timely-delivery-heavy-hex-bolt-for-tire-protection-chain-assembly/) Hexagon Head · DIN, ANSI, JIS, ISO4032,ISO4017 **US$0.012 – 0.06**MOQ 1,000 pieces [![High Strength Grade 12.9 Zinc Plated Plow Bolt Rail Fish Bolt](https://img.engineeringhardware.com/High-Strength-Grade-12-9-Zinc-Plated-Plow-Bolt-Rail-Fish-Bolt.webp)](https://engineeringhardware.com/product/high-strength-grade-12-9-zinc-plated-plow-bolt-rail-fish-bolt/) Structural & Heavy Hex Bolts ### [High Strength Grade 12.9 Zinc Plated Plow Bolt Rail Fish Bolt](https://engineeringhardware.com/product/high-strength-grade-12-9-zinc-plated-plow-bolt-rail-fish-bolt/) Round Head · DIN, ANSI, GB, JIS **US$0.0384 – 0.19**MOQ 3,000 pieces [![Zinc-Plated High-Strength Carbon Steel, Full Thread Engagement, and Tool-Friendly Design: Meet The Versatile Fastening Solution Called The Share Bolt](https://img.engineeringhardware.com/Zinc-Plated-High-Strength-Carbon-Steel-Full-Thread-Engagement-and-Tool-Friendly-Design-Meet-The-Versatile-Fastening-Solution-Called-The-Share-Bolt.webp)](https://engineeringhardware.com/product/zinc-plated-high-strength-carbon-steel-full-thread-engagement-and-tool-friendly/) Structural & Heavy Hex Bolts ### [Zinc-Plated High-Strength Carbon Steel, Full Thread Engagement, and Tool-Friendly Design: Meet The Versatile Fastening Solution Called The Share Bolt](https://engineeringhardware.com/product/zinc-plated-high-strength-carbon-steel-full-thread-engagement-and-tool-friendly/) Hexagon Head · DIN, GB **US$0.16**MOQ 1 piece [![Easy Maintenance Cross Recessed Hex Head Bolts Ultra High-Strength Hex Bolts](https://img.engineeringhardware.com/Easy-Maintenance-Cross-Recessed-Hex-Head-Bolts-Ultra-High-Strength-Hex-Bolts.webp)](https://engineeringhardware.com/product/easy-maintenance-cross-recessed-hex-head-bolts-ultra-high-strength-hex-bolts/) Structural & Heavy Hex Bolts ### [Easy Maintenance Cross Recessed Hex Head Bolts Ultra High-Strength Hex Bolts](https://engineeringhardware.com/product/easy-maintenance-cross-recessed-hex-head-bolts-ultra-high-strength-hex-bolts/) Hexagon Head · DIN, ANSI, GB, JIS, BSW, GOST **US$0.012 – 0.036**MOQ 100 pieces [![High Strength Tension Control Bolt A325 Tc Bolt with Nut and Washer Assembled](https://img.engineeringhardware.com/High-Strength-Tension-Control-Bolt-A325-Tc-Bolt-with-Nut-and-Washer-Assembled.webp)](https://engineeringhardware.com/product/high-strength-tension-control-bolt-a325-tc-bolt-with-nut-and-washer-assembled/) Structural & Heavy Hex Bolts ### [High Strength Tension Control Bolt A325 Tc Bolt with Nut and Washer Assembled](https://engineeringhardware.com/product/high-strength-tension-control-bolt-a325-tc-bolt-with-nut-and-washer-assembled/) Round Head · DIN, ANSI, GB, JIS, BSW **US$0.12**MOQ 1 piece [![9s-1838 D6r Track Master Shoe Bolt 3/4-16*104.78 High Strength 12.9class Grade High Quality](https://img.engineeringhardware.com/9s-1838-D6r-Track-Master-Shoe-Bolt-3-4-16-104-78-High-Strength-12-9class-Grade-High-Quality.webp)](https://engineeringhardware.com/product/9s-1838-d6r-track-master-shoe-bolt-3-4-16-104-78-high-strength-12-9class-grade-high/) Structural & Heavy Hex Bolts ### [9s-1838 D6r Track Master Shoe Bolt 3/4-16*104.78 High Strength 12.9class Grade High Quality](https://engineeringhardware.com/product/9s-1838-d6r-track-master-shoe-bolt-3-4-16-104-78-high-strength-12-9class-grade-high/) Bolt and Nut · 40cr Steel **US$2.96 – 7.20**MOQ 50 pieces **US$0.12 – 1.20**MOQ 10,000 piecesGet a 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