--- title: "ASTM A325 Standard Heavy Hex Structure Bolts" description: "ASTM A325 Standard Heavy Hex Structure Bolts — Structural & Heavy Hex Bolts. Material: High Strength Steel, Grade: 8.8. MOQ 10,000 pieces, US$0.20." url: https://engineeringhardware.com/product/astm-a325-standard-heavy-hex-structure-bolts/ source: Engineering Hardware & Fasteners --- # ASTM A325 Standard Heavy Hex Structure Bolts [![ASTM A325 Standard Heavy Hex Structure Bolts](https://img.engineeringhardware.com/ASTM-A325-Standard-Heavy-Hex-Structure-Bolts.webp)](https://img.engineeringhardware.com/ASTM-A325-Standard-Heavy-Hex-Structure-Bolts.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-standard-heavy-hex-structure-bolts.md) Model no. **7/16x3 inch** US$0.20 / piece MOQ 10,000 pieces · Final price confirmed in your quote - **Material:** High Strength Steel - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, JIS, BSW, GOST, DIN558 - **Grade:** 8.8 - **Finish:** Color-Zinc Plated - **Color:** Yellow - **ASTM Grade:** A325 - **Surface:** Black, Galvanize, Ruspert, Dacromet 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%20Standard%20Heavy%20Hex%20Structure%20Bolts%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fastm-a325-standard-heavy-hex-structure-bolts%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 | Customization | Available | | --- | --- | | Material | High Strength Steel | | Type | Hexagon Head | | Model NO. | 7/16x3 inch | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, JIS, BSW, GOST, DIN558 | | Grade | 8.8 | | Finish | Color-Zinc Plated | | Color | Yellow | | Quality | Class 8.8 | | Specifications | DIN/ISO/ANSI | | ASTM Grade | A325 | | Surface | Black, Galvanize, Ruspert, Dacromet | | Transport Package | Small Box, Bag, Polybag, DIY Box, Carton, Pallet | | Specification | DIN, BS, JIS, ANSI | | Origin | Zhejiang China | | HS Code | 731815 | | Production Capacity | 300 Tons/Month | | Category | [Structural & Heavy Hex Bolts](https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/) | ## Technical parameters | Bolt Head | Hex | Round | Mushroom | T | Square | OVAL | CSK | | --- | --- | --- | --- | --- | --- | --- | --- | | Material | Carbon Steel | Stainless Steel | Alloy Steel | Brass | Copper | Bronze | Aluminum | | Grade/Metric | 4.8 | 6.8 | 8.8 | 10.9 | 12.9 | | | | Grade/ANSI | A307-A | A307-B | A307-C | J429 Gr 2 | J429 Gr 5 | J429 Gr 8 | J429 Gr8.2 | | Standards | DIN | ISO | GB | ANSI | JIS | BS | UNI | | Threads | UNC | UNF | 2A | 3A | T threads | Left Thread | ISO | | Steel Grade | C1035 | C1045 | C1020 | C1010 | Q235 | A3 | Q195 | | Surface | Plain | Black | Zinc | YZP | Dacromet | Ruspert | Nickle | ## Description ASTM A325 Standard Heavy Hex Structure Bolts is part of our structural & heavy hex bolts range (Bolts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, ANSI, GB, JIS, BSW, GOST, DIN558 - **Material:** High Strength Steel - **Grade:** 8.8 - **Head Style:** Hexagonal - **Finish:** Color-Zinc Plated - **Connection:** Common Bolt - **Color:** Yellow Available configurations include material, head style, standard, grade and finish. 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$0.20 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 Standard Heavy Hex Structure Bolts? The listed minimum order is 10,000 pieces, at US$0.20 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 Standard Heavy Hex Structure Bolts? Type: Hexagon Head; Standard: DIN, ANSI, GB, JIS, BSW, GOST, DIN558; Material: High Strength Steel; Grade: 8.8; Head Style: Hexagonal; Finish: Color-Zinc Plated. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, head style, standard, grade and finish. 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/) [![High Strength ISO898 Certified 12.9 Dacromet Alloy Steel Full Thread Hex Bolt](https://img.engineeringhardware.com/High-Strength-ISO898-Certified-12-9-Dacromet-Alloy-Steel-Full-Thread-Hex-Bolt.webp)](https://engineeringhardware.com/product/high-strength-iso898-certified-12-9-dacromet-alloy-steel-full-thread-hex-bolt/) Structural & Heavy Hex Bolts ### [High Strength ISO898 Certified 12.9 Dacromet Alloy Steel Full Thread Hex Bolt](https://engineeringhardware.com/product/high-strength-iso898-certified-12-9-dacromet-alloy-steel-full-thread-hex-bolt/) Hexagon Head · DIN, ANSI, GB, JIS, BSW, GOST **US$0.13 – 0.18**MOQ 100 pieces [![High Strength Carbon Steel Nickel Plated Square Base Projection Weld Screw Spot Welding 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