--- title: "DIN981 4 Slotted Locking Round Nuts Bearing Nut Lock Nuts" description: "DIN981 4 Slotted Locking Round Nuts Bearing Nut Lock Nuts — Nylon-Insert & All-Metal Lock Nuts. MOQ 10 pieces, US$0.024." url: https://engineeringhardware.com/product/din981-4-slotted-locking-round-nuts-bearing-nut-lock-nuts-2/ source: Engineering Hardware & Fasteners --- # DIN981 4 Slotted Locking Round Nuts Bearing Nut Lock Nuts [![DIN981 4 Slotted Locking Round Nuts Bearing Nut Lock Nuts](https://img.engineeringhardware.com/DIN981-4-Slotted-Locking-Round-Nuts-Bearing-Nut-Lock-Nuts-2.webp)](https://img.engineeringhardware.com/DIN981-4-Slotted-Locking-Round-Nuts-Bearing-Nut-Lock-Nuts-2.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/din981-4-slotted-locking-round-nuts-bearing-nut-lock-nuts-2.md) Model no. **round nut** US$0.024 / piece MOQ 10 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, BSW - **Grade:** 8.8 - **Size:** Can Be Customized - **Package Size:** 25.00cm * 25.00cm * 16.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20DIN981%204%20Slotted%20Locking%20Round%20Nuts%20Bearing%20Nut%20Lock%20Nuts%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin981-4-slotted-locking-round-nuts-bearing-nut-lock-nuts-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 | Stainless Steel | | Type | Round Head | | Model NO. | round nut | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, BSW | | Grade | 8.8 | | Om | Can Be Customized | | Em | Can Be Customized | | Size | Can Be Customized | | Wide | Can Be Customized | | Diametre | Can Be Customized | | Transport Package | Box/Bag | | Specification | 5-128+ | | Origin | Yongnian, Handan, Hebei Province, China | | Production Capacity | 8000ton/Year | | Package Size | 25.00cm * 25.00cm * 16.00cm | | Package Gross Weight | 25.000kg | | Lead Time | 3 days (1 - 300000 Pieces) To be negotiated ( > 300000 Pieces) | | Category | [Nylon-Insert & All-Metal Lock Nuts](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) | ## Description DIN981 4 Slotted Locking Round Nuts Bearing Nut Lock Nuts is part of our nylon-insert & all-metal lock nuts range (Nuts). ### Key details - **Type:** Round Head - **Standard:** DIN, ANSI, GB, BSW - **Material:** Stainless Steel - **Grade:** 8.8 - **Size:** Can Be Customized - **Head Style:** Hexagonal - **Connection:** Common Bolt - **Om:** Can Be Customized Available configurations include material, head style, standard, grade and size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 10 pieces at US$0.024 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 DIN981 4 Slotted Locking Round Nuts Bearing Nut Lock Nuts? The listed minimum order is 10 pieces, at US$0.024 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 DIN981 4 Slotted Locking Round Nuts Bearing Nut Lock Nuts? Type: Round Head; Standard: DIN, ANSI, GB, BSW; Material: Stainless Steel; Grade: 8.8; Size: Can Be Customized; 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 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 & 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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/) [![Stainless Steel304 316 DIN934 Hex Nut/Lock Nut/Flange Nut/Cap Nut/Square Nut/Weld Nut](https://img.engineeringhardware.com/Stainless-Steel304-316-DIN934-Hex-Nut-Lock-Nut-Flange-Nut-Cap-Nut-Square-Nut-Weld-Nut.webp)](https://engineeringhardware.com/product/stainless-steel304-316-din934-hex-nut-lock-nut-flange-nut-cap-nut-square-nut-weld-nut/) Nylon-Insert & All-Metal Lock Nuts ### [Stainless Steel304 316 DIN934 Hex Nut/Lock Nut/Flange Nut/Cap Nut/Square Nut/Weld Nut](https://engineeringhardware.com/product/stainless-steel304-316-din934-hex-nut-lock-nut-flange-nut-cap-nut-square-nut-weld-nut/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW, Customize **US$0.006 – 0.036**MOQ 10,000 pieces [![Durable Uniform Thread Lock Nuts for Engineering 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