--- title: "Precision Engineered Hexagon Slotted Castle Nuts for Machinery Use" description: "Precision Engineered Hexagon Slotted Castle Nuts for Machinery Use — Slotted & Castle Nuts. MOQ 100,000 pieces, US$0.096 – 0.60." url: https://engineeringhardware.com/product/precision-engineered-hexagon-slotted-castle-nuts-for-machinery-use/ source: Engineering Hardware & Fasteners --- # Precision Engineered Hexagon Slotted Castle Nuts for Machinery Use [![Precision Engineered Hexagon Slotted Castle Nuts for Machinery Use](https://img.engineeringhardware.com/Precision-Engineered-Hexagon-Slotted-Castle-Nuts-for-Machinery-Use.webp)](https://img.engineeringhardware.com/Precision-Engineered-Hexagon-Slotted-Castle-Nuts-for-Machinery-Use.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/precision-engineered-hexagon-slotted-castle-nuts-for-machinery-use.md) Model no. **M12** US$0.096 – 0.60 / piece MOQ 100,000 pieces · Final price confirmed in your quote - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, JIS, GOST, BSW - **Grade:** 4.8,6.8,8.8,12.9,etc - **Size:** M4-M16, Can Be Customized - **Length:** Custom - **Finish:** Zinc Plated, Black Oxide, Galvanized, Passivated - **Dimensiong Standard:** as Per Client's Requirement - **Color:** Black, Silver or Customized Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Precision%20Engineered%20Hexagon%20Slotted%20Castle%20Nuts%20for%20Machinery%20Use%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fprecision-engineered-hexagon-slotted-castle-nuts-for-machinery-use%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 | Model NO. | M12 | | --- | --- | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, JIS, GOST, BSW | | Grade | 4.8,6.8,8.8,12.9,etc | | Size | M4-M16, Can Be Customized | | Groove | Hexagon | | Length | Custom | | Finish | Zinc Plated, Black Oxide, Galvanized, Passivated | | Dimensiong Standard | as Per Client's Requirement | | Color | Black, Silver or Customized | | Quality | 100% Inspected; Mtc Provided | | Certificate | ISO9001, SGS, Taf | | Lead Time | 10 to 30 Days | | Company Type | Manufacturer/Factory, Trading Company | | Condition | Brand New | | Transport Package | Standard or Can Be Customized | | Specification | M4-M16, According to customer needs | | Origin | China | | HS Code | 7318160000 | | Production Capacity | 10000000p/Month | | Package Size | 47.00cm * 35.00cm * 30.00cm | | Package Gross Weight | 25.000kg | | Customization | Available | | Material | Stainless Steel | | Type | Hexagon Head | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Specification Table | Parameter | | Vibration Resistance | Built-in flange ensures reliable fastening under dynamic loads. | | Superior Strength | High-quality steel grades provide exceptional tensile and impact resistance. | | Corrosion Protection | Available in multiple surface finishes for harsh conditions. | | Customizable Design | Wide range of sizes, threads, and coatings to fit various needs. | | User-Friendly Installation | Hexagonal head allows easy tightening with standard tools. | | Enhanced Load Distribution | Flange design reduces surface wear and enhances stability. | | Category | [Slotted & Castle Nuts](https://engineeringhardware.com/fastener-products/nuts/slotted-castle-nuts/) | ## Technical parameters | Parameter | Details | | --- | --- | | Material | Stainless Steel | | Type | Hexagon Head | | Connection | Common Bolt | | Head Style | Hexagonal | | Grade | 4.8, 6.8, 8.8, 12.9, etc. | | Size | M4-M16 (Custom sizes available) | | Length | Custom as per requirement | | Finish | Zinc Plated, Black Oxide, Galvanized, Passivated | | Color | Black, Silver, or Customized | | Groove | Hexagon | | Customization | Special sizes, coatings, or custom drawings available | | Quality Control | 100% Inspection with MTC (Mill Test Certificate) | | Condition | Brand New | | Lead Time | 10-30 Days | | Certificates | ISO9001, SGS, TAF | | Packaging | Standard or as per customer request | | Company Type | Manufacturer / Factory, Trading Company | ## Description Precision Engineered Hexagon Slotted Castle Nuts for Machinery Use is part of our slotted & castle nuts range (Nuts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, ANSI, GB, JIS, GOST, BSW - **Material:** Stainless Steel - **Grade:** 4.8,6.8,8.8,12.9,etc - **Size:** M4-M16, Can Be Customized - **Length:** Custom - **Head Style:** Hexagonal - **Groove:** Hexagon Available configurations include head style, standard, grade, size and length. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 100,000 pieces at US$0.096 – 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 Precision Engineered Hexagon Slotted Castle Nuts for Machinery Use? The listed minimum order is 100,000 pieces, at US$0.096 – 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 Precision Engineered Hexagon Slotted Castle Nuts for Machinery Use? Type: Hexagon Head; Standard: DIN, ANSI, GB, JIS, GOST, BSW; Material: Stainless Steel; Grade: 4.8,6.8,8.8,12.9,etc; Size: M4-M16, Can Be Customized; Length: Custom. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include head style, standard, grade, size and length. 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 Hex Slotted Nuts and Castle Nuts with White Zinc Plated All Size Manufacturer and Sales 20 Years](https://img.engineeringhardware.com/DIN935-Hex-Slotted-Nuts-and-Castle-Nuts-with-White-Zinc-Plated-All-Size-Manufacturer-and-Sales-20-Years.webp)](https://engineeringhardware.com/product/din935-hex-slotted-nuts-and-castle-nuts-with-white-zinc-plated-all-size-manufacturer/) Slotted & Castle Nuts ### [DIN935 Hex Slotted Nuts and Castle Nuts with White Zinc Plated All Size Manufacturer and Sales 20 Years](https://engineeringhardware.com/product/din935-hex-slotted-nuts-and-castle-nuts-with-white-zinc-plated-all-size-manufacturer/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.12**MOQ 1,000 pieces [![DIN 935 ASME B 18.2.2 Black Oxide Hexagon Slotted and Castle 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