--- title: "Premium Locking Self-Locking Nuts for Secure Fastening Solutions" description: "Premium Locking Self-Locking Nuts for Secure Fastening Solutions — Hex & Other Standard Nuts. MOQ 100 pieces, US$0.024 – 0.048." url: https://engineeringhardware.com/product/premium-locking-self-locking-nuts-for-secure-fastening-solutions/ source: Engineering Hardware & Fasteners --- # Premium Locking Self-Locking Nuts for Secure Fastening Solutions [![Premium Locking Self-Locking Nuts for Secure Fastening Solutions](https://img.engineeringhardware.com/Premium-Locking-Self-Locking-Nuts-for-Secure-Fastening-Solutions.webp)](https://img.engineeringhardware.com/Premium-Locking-Self-Locking-Nuts-for-Secure-Fastening-Solutions.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Nuts › Hex & Other Standard Nuts](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/premium-locking-self-locking-nuts-for-secure-fastening-solutions.md) Model no. **GB6172.2** | **US$0.048**100–999 pieces | **US$0.024**1,000+ pieces | | --- | --- | MOQ 100 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Hexagonal - **Standard:** DIN, GB - **Grade:** 4.8 Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Premium%20Locking%20Self-Locking%20Nuts%20for%20Secure%20Fastening%20Solutions%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fpremium-locking-self-locking-nuts-for-secure-fastening-solutions%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. | GB6172.2 | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, GB | | Grade | 4.8 | | Transport Package | Box | | Specification | M4 | | Origin | Jiangsu, China | | Category | [Hex & Other Standard Nuts](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) | ## Technical parameters | Thread Size D | M3 | M4 | M5 | M6 | M8 | M10 | M12 | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | P | Pitch | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | | da | max | 3.45 | 4.6 | 5.75 | 6.75 | 8.75 | 10.8 | 13 | | min | 3 | 4 | 5 | 6 | 8 | 10 | 12 | | | dw | min | 4.56 | 5.9 | 6.9 | 8.9 | 11.6 | 14.6 | 16.6 | | e | min | 6.01 | 7.66 | 8.79 | 11.05 | 14.38 | 17.77 | 20.03 | | h | max | 3.9 | 5 | 5 | 6 | 6.76 | 8.56 | 10.23 | | min | 3.42 | 4.52 | 4.52 | 5.52 | 6.18 | 7.98 | 9.53 | | | m | min | 1.55 | 1.95 | 2.45 | 2.9 | 3.7 | 4.7 | 5.7 | | mw | min | 1.24 | 1.56 | 1.96 | 2.32 | 2.96 | 3.76 | 4.56 | | s | max | 5.5 | 7 | 8 | 10 | 13 | 16 | 18 | | min | 5.32 | 6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | | | per 1000 units ≈ kg | 0.335 | 0.694 | 0.94 | 1.85 | 3.61 | 7.01 | 10.18 | | | *customized | | | | | | | | | ## Description Premium Locking Self-Locking Nuts for Secure Fastening Solutions is part of our hex & other standard nuts range (Nuts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, GB - **Material:** Carbon Steel - **Grade:** 4.8 - **Head Style:** Hexagonal - **Connection:** Common Bolt Available configurations include material, head style, standard and grade. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 100 pieces at US$0.024 – 0.048 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 Premium Locking Self-Locking Nuts for Secure Fastening Solutions? The listed minimum order is 100 pieces, at US$0.024 – 0.048 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$0.048 for 100–999 pieces; US$0.024 for 1,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Premium Locking Self-Locking Nuts for Secure Fastening Solutions? Type: Hexagon Head; Standard: DIN, GB; Material: Carbon Steel; Grade: 4.8; 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 and grade. 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 & other standard nuts are available? The Hex & Other Standard Nuts category lists 8,354 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-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 Hex & Other Standard Nuts →](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) [![Nylon Cableglandip68 90 Degree with Rubber Seal and Nut Hot Selling for Electrical Equipment](https://img.engineeringhardware.com/Nylon-Cableglandip68-90-Degree-with-Rubber-Seal-and-Nut-Hot-Selling-for-Electrical-Equipment.webp)](https://engineeringhardware.com/product/nylon-cableglandip68-90-degree-with-rubber-seal-and-nut-hot-selling-for-electrical/) Hex & Other Standard Nuts ### [Nylon Cableglandip68 90 Degree with Rubber Seal and Nut Hot Selling for Electrical Equipment](https://engineeringhardware.com/product/nylon-cableglandip68-90-degree-with-rubber-seal-and-nut-hot-selling-for-electrical/) Elbow · Nylon **US$35.40 – 37.80**MOQ 1 bag [![High Strength Socket Head Bolt J781060 for Excavator 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