--- title: "Factory Fastener Supplier Round Castle Nuts Hex Slotted Nut" description: "Factory Fastener Supplier Round Castle Nuts Hex Slotted Nut — Slotted & Castle Nuts. MOQ 1,000 pieces, US$0.036 – 0.24." url: https://engineeringhardware.com/product/factory-fastener-supplier-round-castle-nuts-hex-slotted-nut/ source: Engineering Hardware & Fasteners --- # Factory Fastener Supplier Round Castle Nuts Hex Slotted Nut [![Factory Fastener Supplier Round Castle Nuts Hex Slotted Nut](https://img.engineeringhardware.com/Factory-Fastener-Supplier-Round-Castle-Nuts-Hex-Slotted-Nut.webp)](https://img.engineeringhardware.com/Factory-Fastener-Supplier-Round-Castle-Nuts-Hex-Slotted-Nut.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/factory-fastener-supplier-round-castle-nuts-hex-slotted-nut.md) US$0.036 – 0.24 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, ASME, Ifi, ISO - **Grade:** Grade 2, 5, 8, 10 Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Factory%20Fastener%20Supplier%20Round%20Castle%20Nuts%20Hex%20Slotted%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Ffactory-fastener-supplier-round-castle-nuts-hex-slotted-nut%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 | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, ASME, Ifi, ISO | | Grade | Grade 2, 5, 8, 10 | | MOQ | 1000PCS | | Certificate | ISO;SGS; RoHS;TUV;ISO9001 | | Sampling Time | 3~5 Workdays | | Transport Package | Bulk in Carton. Then in Pallet | | Specification | M2.5~M20 (6#~1") | | Origin | China | | HS Code | 7318160000 | | Production Capacity | 100tons/Month | | Category | [Slotted & Castle Nuts](https://engineeringhardware.com/fastener-products/nuts/slotted-castle-nuts/) | ## Description Factory Fastener Supplier Round Castle Nuts Hex Slotted Nut is part of our slotted & castle nuts range (Nuts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, ANSI, ASME, Ifi, ISO - **Material:** Carbon Steel - **Grade:** Grade 2, 5, 8, 10 - **Head Style:** Hexagonal - **Connection:** Common Bolt - **Certificate:** ISO;SGS; RoHS;TUV;ISO9001 - **Sampling Time:** 3~5 Workdays Available configurations include material, head style, standard and grade. 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$0.036 – 0.24 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 Factory Fastener Supplier Round Castle Nuts Hex Slotted Nut? The listed minimum order is 1,000 pieces, at US$0.036 – 0.24 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 Factory Fastener Supplier Round Castle Nuts Hex Slotted Nut? Type: Hexagon Head; Standard: DIN, ANSI, ASME, Ifi, ISO; Material: Carbon Steel; Grade: Grade 2, 5, 8, 10; Head Style: Hexagonal; Connection: Common Bolt. 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 and grade. 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/) [![Zinc Plated DIN935 Hexagon Slotted and Castle Nuts](https://img.engineeringhardware.com/Zinc-Plated-DIN935-Hexagon-Slotted-and-Castle-Nuts.webp)](https://engineeringhardware.com/product/zinc-plated-din935-hexagon-slotted-and-castle-nuts/) Slotted & Castle Nuts ### [Zinc Plated DIN935 Hexagon Slotted and Castle Nuts](https://engineeringhardware.com/product/zinc-plated-din935-hexagon-slotted-and-castle-nuts/) Hexagon Head · DIN, ANSI, GB, BSW **US$0.024**MOQ 10 pieces [![Castle Nut Hexagon Slotted Nutdin935/DIN979/DIN937 Hexagonal Hexagon Hex Slotted Castle Circular Hole Nuts Low Price Sale Steel 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Zinc](https://engineeringhardware.com/product/1-2-carbon-steel-2-slotted-hex-castle-nut-zinc/) Hexagon Head · DIN, ANSI, GB, BSW **US$0.06 – 0.36**MOQ 1,000 pieces [![Trailer Axle Castle Nut 3/4 inch for Trailer Spindles](https://img.engineeringhardware.com/Trailer-Axle-Castle-Nut-3-4-inch-for-Trailer-Spindles.webp)](https://engineeringhardware.com/product/trailer-axle-castle-nut-3-4-inch-for-trailer-spindles/) Slotted & Castle Nuts ### [Trailer Axle Castle Nut 3/4 inch for Trailer Spindles](https://engineeringhardware.com/product/trailer-axle-castle-nut-3-4-inch-for-trailer-spindles/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.60**MOQ 1,000 pieces [![DIN935 Hexagonal Flange Slotted Nuts](https://img.engineeringhardware.com/DIN935-Hexagonal-Flange-Slotted-Nuts.webp)](https://engineeringhardware.com/product/din935-hexagonal-flange-slotted-nuts/) Slotted & Castle Nuts ### [DIN935 Hexagonal Flange Slotted Nuts](https://engineeringhardware.com/product/din935-hexagonal-flange-slotted-nuts/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.28 – 0.30**MOQ 1,000 kilograms [![Custom Metric Hex Nut, Wheel Lug Nut, Slotted Castle Nut, Flange Nut, Square Nut, Carbon Steel Stainless Steel Fastener for Automotive & Industrial Machinery](https://img.engineeringhardware.com/Custom-Metric-Hex-Nut-Wheel-Lug-Nut-Slotted-Castle-Nut-Flange-Nut-Square-Nut-Carbon-Steel-Stainless-Steel-Fastener-for-Automotive-Industrial-Machinery.webp)](https://engineeringhardware.com/product/custom-metric-hex-nut-wheel-lug-nut-slotted-castle-nut-flange-nut-square-nut-carbon/) Slotted & Castle Nuts ### [Custom Metric Hex Nut, Wheel Lug Nut, Slotted Castle Nut, Flange Nut, Square Nut, Carbon Steel Stainless Steel Fastener for Automotive & Industrial Machinery](https://engineeringhardware.com/product/custom-metric-hex-nut-wheel-lug-nut-slotted-castle-nut-flange-nut-square-nut-carbon/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012**MOQ 1,000 pieces [![Ti64 Titanium Grade 5 Hex Flange Slotted Castle Nuts for Motorcycle and Bicycle Wheel Axle Hub](https://img.engineeringhardware.com/Ti64-Titanium-Grade-5-Hex-Flange-Slotted-Castle-Nuts-for-Motorcycle-and-Bicycle-Wheel-Axle-Hub.webp)](https://engineeringhardware.com/product/ti64-titanium-grade-5-hex-flange-slotted-castle-nuts-for-motorcycle-and-bicycle/) Slotted & Castle Nuts ### [Ti64 Titanium Grade 5 Hex Flange Slotted Castle Nuts for Motorcycle and Bicycle Wheel Axle Hub](https://engineeringhardware.com/product/ti64-titanium-grade-5-hex-flange-slotted-castle-nuts-for-motorcycle-and-bicycle/) RoHS, CE, ISO · Cap Head **US$0.06 – 24.00**MOQ 1 piece [![Standard DIN935 Coarse and Fine Thread Castle Slotted Nut in Brass Plain for Mechanical Assembly Mechanical Fastener](https://img.engineeringhardware.com/Standard-DIN935-Coarse-and-Fine-Thread-Castle-Slotted-Nut-in-Brass-Plain-for-Mechanical-Assembly-Mechanical-Fastener.webp)](https://engineeringhardware.com/product/standard-din935-coarse-and-fine-thread-castle-slotted-nut-in-brass-plain-for/) Slotted & Castle Nuts ### [Standard DIN935 Coarse and Fine Thread Castle Slotted Nut in Brass Plain for Mechanical Assembly Mechanical Fastener](https://engineeringhardware.com/product/standard-din935-coarse-and-fine-thread-castle-slotted-nut-in-brass-plain-for/) Castle Type · DIN, ANSI, GB, JIS, BSW **US$0.036 – 0.36**MOQ 10,000 pieces **US$0.036 – 0.24**MOQ 1,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Factory%20Fastener%20Supplier%20Round%20Castle%20Nuts%20Hex%20Slotted%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Ffactory-fastener-supplier-round-castle-nuts-hex-slotted-nut%2F)