--- title: "Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts" description: "Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts — Nylon-Insert & All-Metal Lock Nuts. MOQ 10,000 pieces, US$0.012 – 0.036." url: https://engineeringhardware.com/product/black-oxide-3-8-16-nylon-insert-hex-lock-nut-stainless-locknuts/ source: Engineering Hardware & Fasteners --- # Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts [![Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts](https://img.engineeringhardware.com/Black-Oxide-3-8-16-Nylon-Insert-Hex-Lock-Nut-Stainless-Locknuts.webp)](https://img.engineeringhardware.com/Black-Oxide-3-8-16-Nylon-Insert-Hex-Lock-Nut-Stainless-Locknuts.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Nuts › Nylon-Insert & All-Metal Lock Nuts](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/black-oxide-3-8-16-nylon-insert-hex-lock-nut-stainless-locknuts.md) Model no. **Locknuts** | **US$0.036**10,000–49,999 pieces | **US$0.024**50,000–99,999 pieces | **US$0.012**100,000+ pieces | | --- | --- | --- | MOQ 10,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, JIS, GOST, BSW - **Grade:** 8.8 - **Hex Drive Size:** 9/16"; Width From Flat to Flat: 0.551 inch to 0.564 inch; Overall Height: 0.438 inch to 0.468 inch 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%203%2F8-16%20Nylon%20Insert%20Hex%20Lock%20Nut%20Stainless%20Locknuts%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fblack-oxide-3-8-16-nylon-insert-hex-lock-nut-stainless-locknuts%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 | Stainless Steel | | Type | Round Head | | Model NO. | Locknuts | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, JIS, GOST, BSW | | Grade | 8.8 | | Fastener Type | Locknuts | | Transport Package | Cartons+Plastic Bags | | Specification | M1-M16/as Request | | Origin | China | | Production Capacity | 500ton/Montth | | Hex Drive Size | 9/16"; Width From Flat to Flat: 0.551 inch to 0.564 inch; Overall Height: 0.438 inch to 0.468 inch | | Our nut line includes the following | * Finished hex nuts | | Category | [Nylon-Insert & All-Metal Lock Nuts](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) | ## Technical parameters | Material | stainless_steel_304 | | --- | --- | | Fastener Type | Lock | | Thread Size | 3/8"-16 | | Exterior Finish | Black | | Color | Black | | Delivery Time | 10-30 Days | | --- | --- | | Sample Service | Samples are all in free. | | Advantage | 1. Competitive price; 2. Best service available | | Packing | Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand Or box and cartons and pallets | ## Description Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts is part of our nylon-insert & all-metal lock nuts range (Nuts). ### Key details - **Type:** Round Head - **Standard:** DIN, ANSI, GB, JIS, GOST, BSW - **Material:** Stainless Steel - **Grade:** 8.8 - **Head Style:** Hexagonal - **Connection:** Common Bolt - **Fastener Type:** Locknuts - **Our nut line includes the following:** * Finished hex nuts Available configurations include material, head style, standard, grade and hex drive size. 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$0.012 – 0.036 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 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts? The listed minimum order is 10,000 pieces, at US$0.012 – 0.036 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size. ### How does the price change with quantity? Volume pricing: US$0.036 for 10,000–49,999 pieces; US$0.024 for 50,000–99,999 pieces; US$0.012 for 100,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Black Oxide 3/8-16 Nylon Insert Hex Lock Nut Stainless Locknuts? Type: Round Head; Standard: DIN, ANSI, GB, JIS, GOST, BSW; Material: Stainless Steel; Grade: 8.8; Head Style: Hexagonal; Connection: Common Bolt. 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 hex drive size. 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 nylon-insert & all-metal lock nuts are available? The Nylon-Insert & All-Metal Lock Nuts category lists 2,493 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) 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 Nylon-Insert & All-Metal Lock Nuts →](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) [![Durable Zinc Plated M6 Hex Lock Nuts for Safe Assembly](https://img.engineeringhardware.com/Durable-Zinc-Plated-M6-Hex-Lock-Nuts-for-Safe-Assembly.webp)](https://engineeringhardware.com/product/durable-zinc-plated-m6-hex-lock-nuts-for-safe-assembly/) Nylon-Insert & All-Metal Lock Nuts ### [Durable Zinc Plated M6 Hex Lock Nuts for Safe Assembly](https://engineeringhardware.com/product/durable-zinc-plated-m6-hex-lock-nuts-for-safe-assembly/) Round Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.012**MOQ 100 pieces [![Premium Grade 8 Serrated Hex Lock Nut for Secure 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