--- title: "High Strength 8 Grade Hex Slotted Castle Nut for Cotter Pin Locking" description: "High Strength 8 Grade Hex Slotted Castle Nut for Cotter Pin Locking — Slotted & Castle Nuts. MOQ 10 pieces, US$0.024." url: https://engineeringhardware.com/product/high-strength-8-grade-hex-slotted-castle-nut-for-cotter-pin-locking/ source: Engineering Hardware & Fasteners --- # High Strength 8 Grade Hex Slotted Castle Nut for Cotter Pin Locking [![High Strength 8 Grade Hex Slotted Castle Nut for Cotter Pin Locking](https://img.engineeringhardware.com/High-Strength-8-Grade-Hex-Slotted-Castle-Nut-for-Cotter-Pin-Locking.webp)](https://img.engineeringhardware.com/High-Strength-8-Grade-Hex-Slotted-Castle-Nut-for-Cotter-Pin-Locking.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/high-strength-8-grade-hex-slotted-castle-nut-for-cotter-pin-locking.md) Model no. **Castle Nut/Slotted nut** US$0.024 / piece MOQ 10 pieces · Final price confirmed in your quote - **Material:** Carbon 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%20High%20Strength%208%20Grade%20Hex%20Slotted%20Castle%20Nut%20for%20Cotter%20Pin%20Locking%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhigh-strength-8-grade-hex-slotted-castle-nut-for-cotter-pin-locking%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. | Castle Nut/Slotted 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 | [Slotted & Castle Nuts](https://engineeringhardware.com/fastener-products/nuts/slotted-castle-nuts/) | ## Technical parameters | Opposite sides | Can be customized | | --- | --- | | thickness | Can be customized | | internal diameter | 2-128 | | strength | 4.8-12.9 | ## Description High Strength 8 Grade Hex Slotted Castle Nut for Cotter Pin Locking is part of our slotted & castle nuts range (Nuts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, ANSI, GB, BSW - **Material:** Carbon 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 High Strength 8 Grade Hex Slotted Castle Nut for Cotter Pin Locking? 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 High Strength 8 Grade Hex Slotted Castle Nut for Cotter Pin Locking? Type: Hexagon Head; Standard: DIN, ANSI, GB, BSW; Material: Carbon 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 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 & 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 Slotted & Castle Nuts →](https://engineeringhardware.com/fastener-products/nuts/slotted-castle-nuts/) [![DIN935 Hexagon Slotted and Castle Nuts](https://img.engineeringhardware.com/DIN935-Hexagon-Slotted-and-Castle-Nuts.webp)](https://engineeringhardware.com/product/din935-hexagon-slotted-and-castle-nuts/) Slotted & Castle Nuts ### [DIN935 Hexagon Slotted and Castle Nuts](https://engineeringhardware.com/product/din935-hexagon-slotted-and-castle-nuts/) Hexagon Head · DIN, ANSI, GB, JIS **US$0.0036 – 0.0072**MOQ 1 piece [![Black Yellow Zinc Plated DIN935 Hex Nut Hexagon Slotted and Castle Nut](https://img.engineeringhardware.com/Black-Yellow-Zinc-Plated-DIN935-Hex-Nut-Hexagon-Slotted-and-Castle-Nut.webp)](https://engineeringhardware.com/product/black-yellow-zinc-plated-din935-hex-nut-hexagon-slotted-and-castle-nut/) Slotted & Castle Nuts ### [Black Yellow Zinc Plated DIN935 Hex Nut Hexagon Slotted and Castle Nut](https://engineeringhardware.com/product/black-yellow-zinc-plated-din935-hex-nut-hexagon-slotted-and-castle-nut/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.006 – 0.036**MOQ 10,000 pieces [![Made in China Factory Carbon Steel Zinc Galvanized Hexagonal Slotted Nuts 316 304 Stainless Steel Zinc Plated Hex Castle Nut](https://img.engineeringhardware.com/Made-in-China-Factory-Carbon-Steel-Zinc-Galvanized-Hexagonal-Slotted-Nuts-316-304-Stainless-Steel-Zinc-Plated-Hex-Castle-Nut.webp)](https://engineeringhardware.com/product/made-in-china-factory-carbon-steel-zinc-galvanized-hexagonal-slotted-nuts-316-304/) Slotted & Castle Nuts ### [Made in China Factory Carbon Steel Zinc Galvanized Hexagonal Slotted Nuts 316 304 Stainless Steel Zinc Plated Hex Castle Nut](https://engineeringhardware.com/product/made-in-china-factory-carbon-steel-zinc-galvanized-hexagonal-slotted-nuts-316-304/) C1022A · Carbon Steel **US$0.12 – 1.20**MOQ 1,000 pieces [![DIN935 A2-70 Stainless Steel Hex Slotted Castle Nut Precision Anti-Loosening Fastener](https://img.engineeringhardware.com/DIN935-A2-70-Stainless-Steel-Hex-Slotted-Castle-Nut-Precision-Anti-Loosening-Fastener.webp)](https://engineeringhardware.com/product/din935-a2-70-stainless-steel-hex-slotted-castle-nut-precision-anti-loosening-fastener/) Slotted & Castle Nuts ### [DIN935 A2-70 Stainless Steel Hex Slotted Castle Nut Precision Anti-Loosening Fastener](https://engineeringhardware.com/product/din935-a2-70-stainless-steel-hex-slotted-castle-nut-precision-anti-loosening-fastener/) Hexagon Head With Flange · DIN, ANSI, GB, JIS **US$0.012 – 0.096**MOQ 1,000 pieces [![Hexagon Head Round Slotted Nuts DIN 935](https://img.engineeringhardware.com/Hexagon-Head-Round-Slotted-Nuts-DIN-935.webp)](https://engineeringhardware.com/product/hexagon-head-round-slotted-nuts-din-935/) Slotted & Castle Nuts ### [Hexagon Head Round Slotted Nuts DIN 935](https://engineeringhardware.com/product/hexagon-head-round-slotted-nuts-din-935/) Hexagon Head · DIN, ANSI, GB, JIS, BSW **US$0.30 – 30.00**MOQ 500 pieces [![Factory Price DIN935 Slotted Castle Nut Carbon Steel Hex Castellated Lock Nut](https://img.engineeringhardware.com/Factory-Price-DIN935-Slotted-Castle-Nut-Carbon-Steel-Hex-Castellated-Lock-Nut.webp)](https://engineeringhardware.com/product/factory-price-din935-slotted-castle-nut-carbon-steel-hex-castellated-lock-nut/) Slotted & Castle Nuts ### [Factory Price DIN935 Slotted Castle Nut Carbon Steel Hex Castellated Lock Nut](https://engineeringhardware.com/product/factory-price-din935-slotted-castle-nut-carbon-steel-hex-castellated-lock-nut/) Castle Nut · DIN, ANSI, GB, JIS, GOST, BSW, ISO **US$0.13 – 0.25**MOQ 1,000 pieces [![Hexagon Slotted Castle Nut with HDG Finish](https://img.engineeringhardware.com/Hexagon-Slotted-Castle-Nut-with-HDG-Finish.webp)](https://engineeringhardware.com/product/hexagon-slotted-castle-nut-with-hdg-finish/) Slotted & Castle Nuts ### [Hexagon Slotted Castle Nut with HDG Finish](https://engineeringhardware.com/product/hexagon-slotted-castle-nut-with-hdg-finish/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012**MOQ 50,000 pieces [![Factory Wholesale Fastener Supplier Round Castle Nuts Hex Slotted Nut DIN935](https://img.engineeringhardware.com/Factory-Wholesale-Fastener-Supplier-Round-Castle-Nuts-Hex-Slotted-Nut-DIN935.webp)](https://engineeringhardware.com/product/factory-wholesale-fastener-supplier-round-castle-nuts-hex-slotted-nut-din935/) Slotted & Castle Nuts ### [Factory Wholesale Fastener Supplier Round Castle Nuts Hex Slotted Nut DIN935](https://engineeringhardware.com/product/factory-wholesale-fastener-supplier-round-castle-nuts-hex-slotted-nut-din935/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW, ISO **US$0.072 – 0.12**MOQ 1,000 pieces **US$0.024**MOQ 10 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20High%20Strength%208%20Grade%20Hex%20Slotted%20Castle%20Nut%20for%20Cotter%20Pin%20Locking%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhigh-strength-8-grade-hex-slotted-castle-nut-for-cotter-pin-locking%2F)