--- title: "Heavy-Duty M12 Self-Locking Hex Nuts with Nylon Insert" description: "Heavy-Duty M12 Self-Locking Hex Nuts with Nylon Insert — Nylon-Insert & All-Metal Lock Nuts. MOQ 1,000 pieces, US$0.0012 – 0.12." url: https://engineeringhardware.com/product/heavy-duty-m12-self-locking-hex-nuts-with-nylon-insert/ source: Engineering Hardware & Fasteners --- # Heavy-Duty M12 Self-Locking Hex Nuts with Nylon Insert [![Heavy-Duty M12 Self-Locking Hex Nuts with Nylon Insert](https://img.engineeringhardware.com/Heavy-Duty-M12-Self-Locking-Hex-Nuts-with-Nylon-Insert.webp)](https://img.engineeringhardware.com/Heavy-Duty-M12-Self-Locking-Hex-Nuts-with-Nylon-Insert.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/heavy-duty-m12-self-locking-hex-nuts-with-nylon-insert.md) Model no. **Nut** US$0.0012 – 0.12 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, JIS, BSW - **Grade:** 6.8 - **Color:** Yellow/Zinc/Blue/Black - **Thread:** Fine Thread/Coarse Thread - **Package Size:** 10.00cm * 5.00cm * 5.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Heavy-Duty%20M12%20Self-Locking%20Hex%20Nuts%20with%20Nylon%20Insert%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fheavy-duty-m12-self-locking-hex-nuts-with-nylon-insert%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. | Nut | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, JIS, BSW | | Grade | 6.8 | | MOQ | 1000PCS | | Color | Yellow/Zinc/Blue/Black | | Thread | Fine Thread/Coarse Thread | | OEM | as The Drawing | | Transport Package | Bag+Carton+Pallet | | Specification | 4.8/6.8/8.8/10.9/12.9 | | Origin | Hebei China | | HS Code | 731816 | | Production Capacity | 100000ton/Year | | Package Size | 10.00cm * 5.00cm * 5.00cm | | Package Gross Weight | 0.500kg | | Stainless Steel | SS201, SS304, SS316/Steel Grade: DIN: Gr.4 SAE: Gr.2; Carbon steel | | Mainly Product | Screw | | Accepted Delivery Terms | FOB,CFR,CIF,EXW,FCA,DDU,Express Delivery; | | Accepted Payment Currency | USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF; | | Language Spoken | English,Chinese,Bengalese,Korean,Japanese,Arabic,French,Russian,,Spanish, | | Category | [Nylon-Insert & All-Metal Lock Nuts](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) | ## Technical parameters | Standard: | DIN,ASTM/ANSI, JIS, BSW | | --- | --- | | Material | Stainless Steel: SS201, SS304, SS316/Steel Grade: DIN: Gr.4 SAE: Gr.2; Carbon steel | | Finishing | Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide,Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated | | Delivery | within 10-35 days after confirm the order | | Packing | 1.25kgs per bag 2.25kgs per bag/carton with pallet | | Samples | Free Samples for standard fastener | | OEM/ODM | We accept OEM/ODM | | Payment term | 30% TT in advance and 70% TT before shipment | | Nut : we produce hex nut, flange nut, nylon nut, lock nut, rivet nut,cap nut, long nut, spring nut, square nut heavy hex nut, 2H nut, square weld nut etc. DIN934,DIN6923,DIN6926, DIN985,DIN 982, DIN315, DIN6915, DIN5587, DIN1587, DIN5587, DIN6634, DIN928,DIN929,ISO4032,A563/A563M All of our products can be made standard ASME, DIN, JIS, BSW, GB. | | --- | ## Description Heavy-Duty M12 Self-Locking Hex Nuts with Nylon Insert is part of our nylon-insert & all-metal lock nuts range (Nuts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, ANSI, GB, JIS, BSW - **Material:** Carbon Steel - **Grade:** 6.8 - **Thread:** Fine Thread/Coarse Thread - **Head Style:** Hexagonal - **Connection:** Common Bolt - **Color:** Yellow/Zinc/Blue/Black Available configurations include material, head style, standard, grade and color. 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$0.0012 – 0.12 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 Heavy-Duty M12 Self-Locking Hex Nuts with Nylon Insert? The listed minimum order is 1,000 pieces, at US$0.0012 – 0.12 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 Heavy-Duty M12 Self-Locking Hex Nuts with Nylon Insert? Type: Hexagon Head; Standard: DIN, ANSI, GB, JIS, BSW; Material: Carbon Steel; Grade: 6.8; Thread: Fine Thread/Coarse Thread; Head Style: Hexagonal. 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 color. 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/) [![DIN 985 Nylon Lock Nut/Self-Locking Nut Kep Nut/304 Stainless Steel Lock Nut/Lock Nut Locking Nut/Galvanized Lock Nut/A2-70 Nut Elastic Stop Nut](https://img.engineeringhardware.com/DIN-985-Nylon-Lock-Nut-Self-Locking-Nut-Kep-Nut-304-Stainless-Steel-Lock-Nut-Lock-Nut-Locking-Nut-Galvanized-Lock-Nut-A2-70-Nut-Elastic-Stop-Nut.webp)](https://engineeringhardware.com/product/din-985-nylon-lock-nut-self-locking-nut-kep-nut-304-stainless-steel-lock-nut-lock/) Nylon-Insert & All-Metal Lock Nuts ### [DIN 985 Nylon Lock Nut/Self-Locking Nut Kep Nut/304 Stainless Steel Lock Nut/Lock Nut Locking Nut/Galvanized Lock Nut/A2-70 Nut Elastic Stop Nut](https://engineeringhardware.com/product/din-985-nylon-lock-nut-self-locking-nut-kep-nut-304-stainless-steel-lock-nut-lock/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012 – 0.96**MOQ 50,000 pieces [![Good Price Round Nut, Slotted Nut, Square Nut Lock Nut Cage Nut T Slot Nut](https://img.engineeringhardware.com/Good-Price-Round-Nut-Slotted-Nut-Square-Nut-Lock-Nut-Cage-Nut-T-Slot-Nut.webp)](https://engineeringhardware.com/product/good-price-round-nut-slotted-nut-square-nut-lock-nut-cage-nut-t-slot-nut/) Nylon-Insert & All-Metal Lock Nuts ### [Good Price Round Nut, Slotted Nut, Square Nut Lock Nut Cage Nut T Slot Nut](https://engineeringhardware.com/product/good-price-round-nut-slotted-nut-square-nut-lock-nut-cage-nut-t-slot-nut/) Cast Steel · Spray-Paint **US$60.00 – 240.00**MOQ 100 pieces [![Blue White Zinc Plated Galvanized Carbon Steel Keeps Nut K-Lock Nut](https://img.engineeringhardware.com/Blue-White-Zinc-Plated-Galvanized-Carbon-Steel-Keeps-Nut-K-Lock-Nut.webp)](https://engineeringhardware.com/product/blue-white-zinc-plated-galvanized-carbon-steel-keeps-nut-k-lock-nut/) Nylon-Insert & All-Metal Lock Nuts ### [Blue White Zinc Plated Galvanized Carbon Steel Keeps Nut K-Lock Nut](https://engineeringhardware.com/product/blue-white-zinc-plated-galvanized-carbon-steel-keeps-nut-k-lock-nut/) Hexagon Head · DIN, ANSI, GB, JIS **US$0.0036 – 0.0096**MOQ 1 piece [![Hex Nylon Insert Lock Nuts DIN985 Nylon Locking Nut](https://img.engineeringhardware.com/Hex-Nylon-Insert-Lock-Nuts-DIN985-Nylon-Locking-Nut.webp)](https://engineeringhardware.com/product/hex-nylon-insert-lock-nuts-din985-nylon-locking-nut/) Nylon-Insert & All-Metal Lock Nuts ### [Hex Nylon Insert Lock Nuts DIN985 Nylon Locking Nut](https://engineeringhardware.com/product/hex-nylon-insert-lock-nuts-din985-nylon-locking-nut/) ASME/ANSI B18.2.2; 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