--- title: "Round Nut Locks Slotted Nut DIN 981" description: "Round Nut Locks Slotted Nut DIN 981 — Slotted & Castle Nuts. Material: High Strength Steel, Grade: 4.8. MOQ 1 piece, US$0.12 – 0.60." url: https://engineeringhardware.com/product/round-nut-locks-slotted-nut-din-981/ source: Engineering Hardware & Fasteners --- # Round Nut Locks Slotted Nut DIN 981 [![Round Nut Locks Slotted Nut DIN 981](https://img.engineeringhardware.com/Round-Nut-Locks-Slotted-Nut-DIN-981.webp)](https://img.engineeringhardware.com/Round-Nut-Locks-Slotted-Nut-DIN-981.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Nuts › Slotted & Castle Nuts](https://engineeringhardware.com/fastener-products/nuts/slotted-castle-nuts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/round-nut-locks-slotted-nut-din-981.md) Model no. **DIN 981** US$0.12 – 0.60 / piece MOQ 1 piece · Final price confirmed in your quote - **Material:** High Strength Steel - **Head Style:** Round - **Standard:** DIN, ANSI, GB, JIS, BSW, ASME - **Grade:** 4.8 - **Finish:** Zp/Yzp/HDG/Black/Geomet/Dacromet - **Thread:** Coarse/ Fine - **Package Size:** 25.00cm * 25.00cm * 15.00cm - **Compliant with international standards:** These nuts comply with DIN582 standard Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Round%20Nut%20Locks%20Slotted%20Nut%20DIN%20981%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fround-nut-locks-slotted-nut-din-981%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 | High Strength Steel | | Type | Round Head | | Model NO. | DIN 981 | | Connection | Common Bolt | | Head Style | Round | | Standard | DIN, ANSI, GB, JIS, BSW, ASME | | Grade | 4.8 | | Finish | Zp/Yzp/HDG/Black/Geomet/Dacromet | | Thread | Coarse/ Fine | | Package | Plastic Bag/Carton Package/Customize | | Deliver Time | Follow Customer's Request | | Transport Package | 25kgs Ctns/Bags We Can Follow Customer's Request | | Specification | M6-M100, 1/4''-1-1/2'' | | Origin | Handan City | | HS Code | 731816 | | Production Capacity | 50000000 | | Package Size | 25.00cm * 25.00cm * 15.00cm | | Package Gross Weight | 25.000kg | | Durable Structure | Our suspension ring nuts are made of high-quality carbon steel with a zinc finish, ensuring their use in heavy industry, retail, and general industrial applications. | | Compliant with international standards | These nuts comply with DIN582 standard | | ITEM NAME | ROUND NUT | | SIZE | M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48 M52 M56 M60 M64 M68 M72 M73 M80 M85 M90 M100 | | SIZE | 1/4" 5/16" 3/8" 7/16" 1/2" 9/16'' 5/8'' 3/4'' 7/8'' 1'' 1-1/4'' 1-3/8'' 1-1/2'' | | FINISH | PLAIN, ZP, YZP, HDG, Dacromet, Black Oxide ,Cr3+ , Mechanical Galvanizing, | | Core Products | - Nuts and bolts of various specifications | | Our products adhere to international standards, including | - DIN(German Standard) | | PACKAGE | 25kgs Box with Pallet, 25kgs woven bags, 25 kgs Gunny bags , or we can follow customer's request | | Category | [Slotted & Castle Nuts](https://engineeringhardware.com/fastener-products/nuts/slotted-castle-nuts/) | ## Technical parameters | ITEM NAME: | ROUND NUT | | --- | --- | | MATERIAL: | Carbon steel SAE1008 / C1010 / C1020 / 10B21 / 20MnTib / 40Cr / 35Croma / Q355 etc. | | STANDARD: | GB / DIN / ASME/ANSI / BSW | | GRADE: | Gr4 / Gr6 / Gr8 / Gr10 / Gr12 / Class2 / Class5 / Class8 / 2H Heavy Nut | | SIZE : | M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48 M52 M56 M60 M64 M68 M72 M73 M80 M85 M90 M100 | | SIZE: | 1/4" 5/16" 3/8" 7/16" 1/2" 9/16'' 5/8'' 3/4'' 7/8'' 1'' 1-1/4'' 1-3/8'' 1-1/2'' | | FINISH : | PLAIN, ZP, YZP, HDG, Dacromet, Black Oxide ,Cr3+ , Mechanical Galvanizing, | ## Description Round Nut Locks Slotted Nut DIN 981 is part of our slotted & castle nuts range (Nuts). ### Key details - **Type:** Round Head - **Standard:** DIN, ANSI, GB, JIS, BSW, ASME - **Material:** High Strength Steel - **Grade:** 4.8 - **SIZE:** 1/4" 5/16" 3/8" 7/16" 1/2" 9/16'' 5/8'' 3/4'' 7/8'' 1'' 1-1/4'' 1-3/8'' 1-1/2'' - **Thread:** Coarse/ Fine - **Head Style:** Round - **Finish:** Zp/Yzp/HDG/Black/Geomet/Dacromet Available configurations include material, head style, standard, grade and finish. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1 piece at US$0.12 – 0.60 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 Round Nut Locks Slotted Nut DIN 981? The listed minimum order is 1 piece, at US$0.12 – 0.60 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 Round Nut Locks Slotted Nut DIN 981? Type: Round Head; Standard: DIN, ANSI, GB, JIS, BSW, ASME; Material: High Strength Steel; Grade: 4.8; SIZE: 1/4" 5/16" 3/8" 7/16" 1/2" 9/16'' 5/8'' 3/4'' 7/8'' 1'' 1-1/4'' 1-3/8'' 1-1/2''; Thread: Coarse/ Fine. 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 finish. 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 slotted & castle nuts are available? The Slotted & Castle Nuts category lists 493 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/nuts/slotted-castle-nuts/](https://engineeringhardware.com/fastener-products/nuts/slotted-castle-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 Slotted & Castle Nuts →](https://engineeringhardware.com/fastener-products/nuts/slotted-castle-nuts/) [![DIN 935 Carbon Steel Galvanized Hexagon Slotted Castle Nuts High Quality](https://img.engineeringhardware.com/DIN-935-Carbon-Steel-Galvanized-Hexagon-Slotted-Castle-Nuts-High-Quality.webp)](https://engineeringhardware.com/product/din-935-carbon-steel-galvanized-hexagon-slotted-castle-nuts-high-quality/) Slotted & Castle Nuts ### [DIN 935 Carbon Steel Galvanized Hexagon Slotted Castle Nuts High Quality](https://engineeringhardware.com/product/din-935-carbon-steel-galvanized-hexagon-slotted-castle-nuts-high-quality/) Hexagon Head · DIN, ANSI, GB, JIS, BSW, GOST, ISO **US$0.024 – 0.12**MOQ 1,000 pieces [![Stainless Steel 304 316 Hex Castle Slotted Nut with Split Pin 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JIS, GOST, BSW, ISO **US$0.0078 – 0.0091**MOQ 100,000 pieces [![DIN935 M6 M8 M10 M12 M14 M16 Stainless Steel Hexagon Slotted Castle Nut for Automotive](https://img.engineeringhardware.com/DIN935-M6-M8-M10-M12-M14-M16-Stainless-Steel-Hexagon-Slotted-Castle-Nut-for-Automotive.webp)](https://engineeringhardware.com/product/din935-m6-m8-m10-m12-m14-m16-stainless-steel-hexagon-slotted-castle-nut-for/) Slotted & Castle Nuts ### [DIN935 M6 M8 M10 M12 M14 M16 Stainless Steel Hexagon Slotted Castle Nut for Automotive](https://engineeringhardware.com/product/din935-m6-m8-m10-m12-m14-m16-stainless-steel-hexagon-slotted-castle-nut-for/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.12 – 1.20**MOQ 1,000 pieces [![Carbon Steel Black Oxide Hex Slotted Nut DIN 935 Castle Nut M8 M10 M12 M16 Black Finished Slotted Nut Precision Fastener](https://img.engineeringhardware.com/Carbon-Steel-Black-Oxide-Hex-Slotted-Nut-DIN-935-Castle-Nut-M8-M10-M12-M16-Black-Finished-Slotted-Nut-Precision-Fastener.webp)](https://engineeringhardware.com/product/carbon-steel-black-oxide-hex-slotted-nut-din-935-castle-nut-m8-m10-m12-m16-black/) Slotted & Castle Nuts ### [Carbon Steel Black Oxide Hex Slotted Nut DIN 935 Castle Nut M8 M10 M12 M16 Black Finished Slotted Nut Precision Fastener](https://engineeringhardware.com/product/carbon-steel-black-oxide-hex-slotted-nut-din-935-castle-nut-m8-m10-m12-m16-black/) Hexagon Head · DIN, ANSI, GB, JIS, BSW **US$0.36 – 1.20**MOQ 1,000 pieces **US$0.12 – 0.60**MOQ 1 pieceGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Round%20Nut%20Locks%20Slotted%20Nut%20DIN%20981%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fround-nut-locks-slotted-nut-din-981%2F)