--- title: "Bearing Lock Nut / Km Nut / DIN981 /Round Nut" description: "Bearing Lock Nut / Km Nut / DIN981 /Round Nut — Nylon-Insert & All-Metal Lock Nuts. MOQ 10,000 pieces, US$0.012 – 0.084." url: https://engineeringhardware.com/product/bearing-lock-nut-km-nut-din981-round-nut-2/ source: Engineering Hardware & Fasteners --- # Bearing Lock Nut / Km Nut / DIN981 /Round Nut [![Bearing Lock Nut / Km Nut / DIN981 /Round Nut](https://img.engineeringhardware.com/Bearing-Lock-Nut-Km-Nut-DIN981-Round-Nut.webp)](https://img.engineeringhardware.com/Bearing-Lock-Nut-Km-Nut-DIN981-Round-Nut.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/bearing-lock-nut-km-nut-din981-round-nut-2.md) Model no. **Bearing Nut** | **US$0.084**10,000–49,999 pieces | **US$0.06**50,000–99,999 pieces | **US$0.012**100,000+ pieces | | --- | --- | --- | MOQ 10,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel, Stainless Steel, Alloy Steel - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, JIS, BSW - **Grade:** 4,6,8,10,12 - **Head Mark:** Customized - **Thread Length:** Lnternal Threads - **Size:** M3-M100 - **Package Size:** 23.00cm * 11.00cm * 6.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Bearing%20Lock%20Nut%20%2F%20Km%20Nut%20%2F%20DIN981%20%2FRound%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fbearing-lock-nut-km-nut-din981-round-nut-2%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, Stainless Steel, Alloy Steel | | Type | Hexagon Head | | Model NO. | Bearing Nut | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, JIS, BSW | | Grade | 4,6,8,10,12 | | Delivery | 5-10 Days in Stock, 10-30 Days Not in Stock | | Head Mark | Customized | | Thread Length | Lnternal Threads | | Size | M3-M100 | | Transport Package | Plastic Bags+Cartons+Pallets | | Specification | as Request | | Origin | Hebei, China | | HS Code | 731816 | | Production Capacity | 50 Million Tons/Month | | Package Size | 23.00cm * 11.00cm * 6.00cm | | Package Gross Weight | 25.000kg | | Mechanical Rotation Systems | Lock bearings on motor shafts, pump spindles, and gearbox shafts to ensure stable rotation. | | Automotive Drivetrains | Secure wheel hub bearings and transmission bearings, withstanding vibration and axial forces during driving. | | Machine Tools | Fix spindle bearings in lathes or milling machines, critical for maintaining machining precision. | | Agricultural/Heavy Equipment | Fasten bearings in tractor axles or conveyor rollers, enduring harsh working conditions. | | Longshi Advantage | 8-dimensional customization (material, specification, surface treatment, etc.), with 3D design drawings + process plans. | | Stockout rate | 10+%), with real-time inventory monitoring. For extreme stockouts, free upgraded alternatives are provided (peers often leave clients waiting indefinitely). | | Category | [Nylon-Insert & All-Metal Lock Nuts](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) | ## Technical parameters | nominal size | 2.204 | 2.407 | 2.626 | 4.778 | 5.185 | 5.622 | 6.097 | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | d | | | | | | | | | | | code | RN 10 | RN 11 | RN 12 | ANR 22 | ANR 24 | ANR 26 | RN 28 | | | | k1 | 18 | 18 | 18 | 12 | 12 | 12 | 8 | | | | C | Maximum value (inches) | | 3.062 | 3.281 | 3.5 | 6.312 | 3.938 | 7.312 | 7.938 | | E | Maximum value (inches) | | 2.562 | 2.812 | 3.062 | 5.375 | 5.625 | 6.062 | 6.563 | | D | Maximum value (inches) | | 0.594 | 0.594 | 0.656 | 0.781 | 0.844 | 0.906 | 0.969 | | G | Minimum value (inches) | | 0.24 | 0.24 | 0.24 | 0.61 | 0.61 | 0.61 | 0.61 | | H | Maximum value (inches) | | 0.135 | 0.135 | 0.135 | 0.26 | 0.291 | 0.291 | 0.291 | | D1 | Maximum value (inches) | | 0.078 | 0.078 | 0.078 | 0.141 | 0.141 | 0.141 | 0.141 | | C | Maximum value (mm) | | 77.77 | 83.34 | 88.9 | 160.32 | 176.23 | 185.72 | 201.63 | | E | Maximum value (mm) | | 65.07 | 71.42 | 77.77 | 136.53 | 142.88 | 153.97 | 166.7 | | D | Maximum value (mm) | | 15.09 | 15.09 | 16.66 | 19.84 | 21.44 | 23.01 | 24.61 | | G | Maximum value (mm) | | 6.1 | 6.1 | 6.1 | 15.49 | 15.49 | 15.49 | 15.49 | | H | Maximum value (mm) | | 3.43 | 3.43 | 3.43 | 6.6 | 7.39 | 7.39 | 7.39 | | D1 | Minimum value (mm) | | 1.98 | 1.98 | 1.98 | 3.58 | 3.58 | 3.58 | 3.58 | ## Description Bearing Lock Nut / Km Nut / DIN981 /Round Nut 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, Stainless Steel, Alloy Steel - **Grade:** 4,6,8,10,12 - **Size:** M3-M100 - **Head Style:** Hexagonal - **Connection:** Common Bolt - **Head Mark:** Customized Available configurations include material, head style, standard, grade and head mark. 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 – 0.084 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 Bearing Lock Nut / Km Nut / DIN981 /Round Nut? The listed minimum order is 10,000 pieces, at US$0.012 – 0.084 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$0.084 for 10,000–49,999 pieces; US$0.06 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 Bearing Lock Nut / Km Nut / DIN981 /Round Nut? Type: Hexagon Head; Standard: DIN, ANSI, GB, JIS, BSW; Material: Carbon Steel, Stainless Steel, Alloy Steel; Grade: 4,6,8,10,12; Size: M3-M100; 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 head mark. 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/) [![ANSI Nylon Nuts Nylon Insert Hex Lock Nuts](https://img.engineeringhardware.com/ANSI-Nylon-Nuts-Nylon-Insert-Hex-Lock-Nuts.webp)](https://engineeringhardware.com/product/ansi-nylon-nuts-nylon-insert-hex-lock-nuts/) Nylon-Insert & All-Metal Lock Nuts ### [ANSI Nylon Nuts Nylon Insert Hex Lock Nuts](https://engineeringhardware.com/product/ansi-nylon-nuts-nylon-insert-hex-lock-nuts/) ISO · Stainless Steel **US$0.12 – 1.20**MOQ 1,000 pieces [![Grade 10 Carbon Steel Nickel Plated Hex Flange Self-Locking Lock Nut Anti-Slip Washer M5-M20 High Strength Automotive Fastener](https://img.engineeringhardware.com/Grade-10-Carbon-Steel-Nickel-Plated-Hex-Flange-Self-Locking-Lock-Nut-Anti-Slip-Washer-M5-M20-High-Strength-Automotive-Fastener.webp)](https://engineeringhardware.com/product/grade-10-carbon-steel-nickel-plated-hex-flange-self-locking-lock-nut-anti-slip/) Nylon-Insert & All-Metal Lock Nuts ### [Grade 10 Carbon Steel Nickel Plated Hex Flange Self-Locking Lock Nut Anti-Slip Washer M5-M20 High Strength Automotive Fastener](https://engineeringhardware.com/product/grade-10-carbon-steel-nickel-plated-hex-flange-self-locking-lock-nut-anti-slip/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012 – 0.06**MOQ 100 pieces [![Nylon Insert Hex Lock Nut DIN985, Metric Anti-Loosening Self-Locking Nut](https://img.engineeringhardware.com/Nylon-Insert-Hex-Lock-Nut-DIN985-Metric-Anti-Loosening-Self-Locking-Nut.webp)](https://engineeringhardware.com/product/nylon-insert-hex-lock-nut-din985-metric-anti-loosening-self-locking-nut/) Nylon-Insert & All-Metal Lock Nuts ### [Nylon Insert Hex Lock Nut DIN985, Metric Anti-Loosening Self-Locking Nut](https://engineeringhardware.com/product/nylon-insert-hex-lock-nut-din985-metric-anti-loosening-self-locking-nut/) Hexagon Head · DIN, ANSI, GB, JIS **US$0.06 – 0.096**MOQ 1,000 pieces [![China Wholesale DIN982 Stainless Steel 304 316 Metric Heavy Hexagon Insert Hex Nylon Lock Nuts](https://img.engineeringhardware.com/China-Wholesale-DIN982-Stainless-Steel-304-316-Metric-Heavy-Hexagon-Insert-Hex-Nylon-Lock-Nuts.webp)](https://engineeringhardware.com/product/china-wholesale-din982-stainless-steel-304-316-metric-heavy-hexagon-insert-hex-nylon/) Nylon-Insert & All-Metal Lock Nuts ### [China Wholesale DIN982 Stainless Steel 304 316 Metric Heavy Hexagon Insert Hex Nylon Lock Nuts](https://engineeringhardware.com/product/china-wholesale-din982-stainless-steel-304-316-metric-heavy-hexagon-insert-hex-nylon/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012**MOQ 10,000 pieces [![Stainless Steel/Carbon Steel Zinc Plated Class 8.8/10.9 DIN982/DIN985 Fastener Manufacturer Locked Insert Nut Hex Nylon Lock Nuts](https://img.engineeringhardware.com/Stainless-Steel-Carbon-Steel-Zinc-Plated-Class-8-8-10-9-DIN982-DIN985-Fastener-Manufacturer-Locked-Insert-Nut-Hex-Nylon-Lock-Nuts.webp)](https://engineeringhardware.com/product/stainless-steel-carbon-steel-zinc-plated-class-8-8-10-9-din982-din985-fastener/) Nylon-Insert & All-Metal Lock Nuts ### [Stainless Steel/Carbon Steel Zinc Plated Class 8.8/10.9 DIN982/DIN985 Fastener Manufacturer Locked Insert Nut Hex Nylon Lock Nuts](https://engineeringhardware.com/product/stainless-steel-carbon-steel-zinc-plated-class-8-8-10-9-din982-din985-fastener/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.12**MOQ 1,000 pieces [![Customized Zinc Plated Carbon Steel Prevailing Torque Hexagonal Flange Lock Nut](https://img.engineeringhardware.com/Customized-Zinc-Plated-Carbon-Steel-Prevailing-Torque-Hexagonal-Flange-Lock-Nut.webp)](https://engineeringhardware.com/product/customized-zinc-plated-carbon-steel-prevailing-torque-hexagonal-flange-lock-nut/) Nylon-Insert & All-Metal Lock Nuts ### [Customized Zinc Plated Carbon Steel Prevailing Torque Hexagonal Flange Lock Nut](https://engineeringhardware.com/product/customized-zinc-plated-carbon-steel-prevailing-torque-hexagonal-flange-lock-nut/) Locking Nuts · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012 – 0.12**MOQ 10,000 pieces [![Zinc Plated Hex Flange Serrated Lock Nut, DIN6923 Carbon Steel Anti-Skid Flange Nut](https://img.engineeringhardware.com/Zinc-Plated-Hex-Flange-Serrated-Lock-Nut-DIN6923-Carbon-Steel-Anti-Skid-Flange-Nut.webp)](https://engineeringhardware.com/product/zinc-plated-hex-flange-serrated-lock-nut-din6923-carbon-steel-anti-skid-flange-nut/) Nylon-Insert & All-Metal Lock Nuts ### [Zinc Plated Hex Flange Serrated Lock Nut, DIN6923 Carbon Steel Anti-Skid Flange Nut](https://engineeringhardware.com/product/zinc-plated-hex-flange-serrated-lock-nut-din6923-carbon-steel-anti-skid-flange-nut/) Hexagon Head · Carbon Steel **US$0.006 – 6.00**MOQ 50,000 pieces [![OEM Standard External Tooth Type Keps Lock Nut in Stainless Steel 304 Plain for Mechanical Assembly](https://img.engineeringhardware.com/OEM-Standard-External-Tooth-Type-Keps-Lock-Nut-in-Stainless-Steel-304-Plain-for-Mechanical-Assembly.webp)](https://engineeringhardware.com/product/oem-standard-external-tooth-type-keps-lock-nut-in-stainless-steel-304-plain-for/) Nylon-Insert & All-Metal Lock Nuts ### [OEM Standard External Tooth Type Keps Lock Nut in Stainless Steel 304 Plain for Mechanical Assembly](https://engineeringhardware.com/product/oem-standard-external-tooth-type-keps-lock-nut-in-stainless-steel-304-plain-for/) Hexagon Head · DIN, ANSI, GB, JIS, BSW **US$0.036 – 0.36**MOQ 10,000 pieces **US$0.012 – 0.084**MOQ 10,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Bearing%20Lock%20Nut%20%2F%20Km%20Nut%20%2F%20DIN981%20%2FRound%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fbearing-lock-nut-km-nut-din981-round-nut-2%2F)