--- title: "Black Oxide Grade 8.8 Hex Bolt with Double Lock Nut Set" description: "Black Oxide Grade 8.8 Hex Bolt with Double Lock Nut Set — Assortment Kits & Mixed Fastener Sets. MOQ 1,000 pieces, US$0.36 – 6.00." url: https://engineeringhardware.com/product/black-oxide-grade-8-8-hex-bolt-with-double-lock-nut-set/ source: Engineering Hardware & Fasteners --- # Black Oxide Grade 8.8 Hex Bolt with Double Lock Nut Set [![Black Oxide Grade 8.8 Hex Bolt with Double Lock Nut Set](https://img.engineeringhardware.com/Black-Oxide-Grade-8-8-Hex-Bolt-with-Double-Lock-Nut-Set.webp)](https://img.engineeringhardware.com/Black-Oxide-Grade-8-8-Hex-Bolt-with-Double-Lock-Nut-Set.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Fastener Sets & Assemblies › Assortment Kits & Mixed Fastener Sets](https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/black-oxide-grade-8-8-hex-bolt-with-double-lock-nut-set.md) Model no. **001** US$0.36 – 6.00 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Hexagonal - **Standard:** ANSI, GB - **Grade:** 8.8 - **Finish:** Hot Galvanizing - **Color:** Black - **Package Size:** 40.00cm * 25.00cm * 25.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Black%20Oxide%20Grade%208.8%20Hex%20Bolt%20with%20Double%20Lock%20Nut%20Set%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fblack-oxide-grade-8-8-hex-bolt-with-double-lock-nut-set%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 | Carbon Steel | | Type | Hexagon Head | | Model NO. | 001 | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | ANSI, GB | | Grade | 8.8 | | Application | Machinery, Chemical Industry, Building | | Finish | Hot Galvanizing | | Custmoization | Available | | Transport | by Sea or Air | | Color | Black | | Delivery Date | 25~40days | | Transport Package | Wooden or Pallet | | Specification | Hot Galvanizing | | Origin | China | | HS Code | 731815100 | | Package Size | 40.00cm * 25.00cm * 25.00cm | | Package Gross Weight | 10.000kg | | Category | [Assortment Kits & Mixed Fastener Sets](https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/) | ## Technical parameters | Specification | customization | | --- | --- | | Origin | China | | port | Tianjin | | --- | --- | ## Description Black Oxide Grade 8.8 Hex Bolt with Double Lock Nut Set is part of our assortment kits & mixed fastener sets range (Fastener Sets & Assemblies). ### Key details - **Type:** Hexagon Head - **Standard:** ANSI, GB - **Material:** Carbon Steel - **Grade:** 8.8 - **Head Style:** Hexagonal - **Finish:** Hot Galvanizing - **Connection:** Common Bolt - **Application:** Machinery, Chemical Industry, Building 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 1,000 pieces at US$0.36 – 6.00 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 Black Oxide Grade 8.8 Hex Bolt with Double Lock Nut Set? The listed minimum order is 1,000 pieces, at US$0.36 – 6.00 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 Black Oxide Grade 8.8 Hex Bolt with Double Lock Nut Set? Type: Hexagon Head; Standard: ANSI, GB; Material: Carbon Steel; Grade: 8.8; Head Style: Hexagonal; Finish: Hot Galvanizing. 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 assortment kits & mixed fastener sets are available? The Assortment Kits & Mixed Fastener Sets category lists 3,161 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/](https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/) 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 Assortment Kits & Mixed Fastener Sets →](https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/) [![Carbon Steel Hex Bolt High Strength Structural Grade 8.8 10.9 Heavy Hex Bolts Nuts Washers Set M8X1.5 M9 M10 M12 M14 M16 M18X60](https://img.engineeringhardware.com/Carbon-Steel-Hex-Bolt-High-Strength-Structural-Grade-8-8-10-9-Heavy-Hex-Bolts-Nuts-Washers-Set-M8X1-5-M9-M10-M12-M14-M16-M18X60.webp)](https://engineeringhardware.com/product/carbon-steel-hex-bolt-high-strength-structural-grade-8-8-10-9-heavy-hex-bolts-nuts/) Assortment Kits & Mixed Fastener Sets ### [Carbon Steel Hex Bolt High Strength Structural Grade 8.8 10.9 Heavy Hex Bolts Nuts Washers Set M8X1.5 M9 M10 M12 M14 M16 M18X60](https://engineeringhardware.com/product/carbon-steel-hex-bolt-high-strength-structural-grade-8-8-10-9-heavy-hex-bolts-nuts/) 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