--- title: "Ningbo-Bolt Heavy Duty Hardware Fasteners" description: "Ningbo-Bolt Heavy Duty Hardware Fasteners — Hex-Head Bolts. Material: Steel, Standard: Custom. MOQ 1,000 pieces, US$0.12 – 1.20." url: https://engineeringhardware.com/product/ningbo-bolt-heavy-duty-hardware-fasteners/ source: Engineering Hardware & Fasteners --- # Ningbo-Bolt Heavy Duty Hardware Fasteners [![Ningbo-Bolt Heavy Duty Hardware Fasteners](https://img.engineeringhardware.com/Ningbo-Bolt-Heavy-Duty-Hardware-Fasteners.webp)](https://img.engineeringhardware.com/Ningbo-Bolt-Heavy-Duty-Hardware-Fasteners.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Bolts › Hex-Head Bolts](https://engineeringhardware.com/fastener-products/bolts/hex-head-bolts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/ningbo-bolt-heavy-duty-hardware-fasteners.md) Model no. **A307** US$0.12 – 1.20 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Head Style:** Hexagonal - **Standard:** Custom - **Grade:** Grade a - **Finish:** Plain - **Packing:** Cartons+Plastic Bags - **Surface Treatment:** Black Oxide - **Material:** 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%20Ningbo-Bolt%20Heavy%20Duty%20Hardware%20Fasteners%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fningbo-bolt-heavy-duty-hardware-fasteners%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. | A307 | | --- | --- | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | Custom | | Grade | Grade a | | Application | Machinery, Chemical Industry, Environmental, Building, Industry | | Finish | Plain | | Packing | Cartons+Plastic Bags | | Surface Treatment | Black Oxide | | Transport Package | Carton+Pallet | | Specification | M6-M100 | | Origin | Zhejiang, China | | Production Capacity | 100000 Piece/Pieces Per Month | | Customization | Available | | Material | Steel | | Type | Hexagon Head | | Category | [Hex-Head Bolts](https://engineeringhardware.com/fastener-products/bolts/hex-head-bolts/) | ## Technical parameters | item | value | | --- | --- | | Finish | Plain | | Material | Steel | | Place of Origin | China | | | Zhejiang | | Model Number | A307 | | Standard | Custom | | Material | Steel | | Surface treatment | Black Oxide | | Application | Industry | | Packing | Cartons+plastic Bags | ## Description Ningbo-Bolt Heavy Duty Hardware Fasteners is part of our hex-head bolts range (Bolts). ### Key details - **Type:** Hexagon Head - **Standard:** Custom - **Material:** Steel - **Grade:** Grade a - **Head Style:** Hexagonal - **Surface Treatment:** Black Oxide - **Finish:** Plain - **Connection:** Common Bolt Available configurations include head style, standard, grade, finish and packing. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1,000 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 Ningbo-Bolt Heavy Duty Hardware Fasteners? The listed minimum order is 1,000 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 Ningbo-Bolt Heavy Duty Hardware Fasteners? Type: Hexagon Head; Standard: Custom; Material: Steel; Grade: Grade a; Head Style: Hexagonal; Surface Treatment: Black Oxide. 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, standard, grade, finish and packing. 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 hex-head bolts are available? The Hex-Head Bolts category lists 8,449 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/bolts/hex-head-bolts/](https://engineeringhardware.com/fastener-products/bolts/hex-head-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 Hex-Head Bolts →](https://engineeringhardware.com/fastener-products/bolts/hex-head-bolts/) [![China Stainless Steel Bolts Manufacturer DIN7981 ISO7049 Pointed Tail Phillips Head Cross Point Round Pan Head Self Tapping Screw](https://img.engineeringhardware.com/China-Stainless-Steel-Bolts-Manufacturer-DIN7981-ISO7049-Pointed-Tail-Phillips-Head-Cross-Point-Round-Pan-Head-Self-Tapping-Screw.webp)](https://engineeringhardware.com/product/china-stainless-steel-bolts-manufacturer-din7981-iso7049-pointed-tail-phillips-head/) Hex-Head Bolts ### [China Stainless Steel Bolts Manufacturer DIN7981 ISO7049 Pointed Tail Phillips Head Cross Point Round Pan Head Self Tapping Screw](https://engineeringhardware.com/product/china-stainless-steel-bolts-manufacturer-din7981-iso7049-pointed-tail-phillips-head/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$12.00**MOQ 10 pieces 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Galvanizing](https://engineeringhardware.com/product/carbon-steel-grade-8-8-hex-head-bolt-with-hot-dip-galvanizing/) Hexagon Head · DIN, ANSI, GB **US$0.0204**MOQ 1,000 pieces [![DIN 933/DIN931 Hexagon Head Bolt Stainless Industry Plain Zinc Plated Cartons+Plastic Bags DIN933 931 Steel, Steel Cn; Zhe](https://img.engineeringhardware.com/DIN-933-DIN931-Hexagon-Head-Bolt-Stainless-Industry-Plain-Zinc-Plated-Cartons-Plastic-Bags-DIN933-931-Steel-Steel-Cn-Zhe.webp)](https://engineeringhardware.com/product/din-933-din931-hexagon-head-bolt-stainless-industry-plain-zinc-plated-cartons/) Hex-Head Bolts ### [DIN 933/DIN931 Hexagon Head Bolt Stainless Industry Plain Zinc Plated Cartons+Plastic Bags DIN933 931 Steel, Steel Cn; Zhe](https://engineeringhardware.com/product/din-933-din931-hexagon-head-bolt-stainless-industry-plain-zinc-plated-cartons/) Hexagon Head · DIN **US$0.12 – 1.20**MOQ 1,000 pieces **US$0.12 – 1.20**MOQ 1,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Ningbo-Bolt%20Heavy%20Duty%20Hardware%20Fasteners%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fningbo-bolt-heavy-duty-hardware-fasteners%2F)