--- title: "Valve Mild Steel 12 Corner Nut" description: "Valve Mild Steel 12 Corner Nut — Hex & Other Standard Nuts. Material: Steel, Standard: GB. MOQ 1,000 pieces, US$0.62." url: https://engineeringhardware.com/product/valve-mild-steel-12-corner-nut/ source: Engineering Hardware & Fasteners --- # Valve Mild Steel 12 Corner Nut [![Valve Mild Steel 12 Corner Nut](https://img.engineeringhardware.com/Valve-Mild-Steel-12-Corner-Nut.webp)](https://img.engineeringhardware.com/Valve-Mild-Steel-12-Corner-Nut.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Nuts › Hex & Other Standard Nuts](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/valve-mild-steel-12-corner-nut.md) Model no. **12-4C** US$0.62 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Steel - **Heat Treatment:** Quenching - **Surface Treatment:** Zinc Plating - **Forging Tolerance:** +/-0.2mm - **Standard:** GB - **Surface Treatment 1:** Galvanize Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Valve%20Mild%20Steel%2012%20Corner%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fvalve-mild-steel-12-corner-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 | | --- | --- | | Processing Object | Non-Metallic | | Molding Style | Forging | | Model NO. | 12-4C | | Molding Technics | Pressure Casting | | Application | Auto Parts | | Material | Steel | | Heat Treatment | Quenching | | Surface Treatment | Zinc Plating | | Forging Tolerance | +/-0.2mm | | Standard | GB | | Certification | ISO 9001:2008 | | Production Capacity 1 | 5000PC/Month | | Mild Steel 12 Corner Nut | 12-4c | | Certificatei 1 | ISO9001 | | Surface Treatment 1 | Galvanize | | Transport Package | Carton Box with Wooden Case | | Specification | ISO9001 | | Origin | China | | HS Code | 84869100 | | Production Capacity | 3000PCS/Month | | Hot die forging press | up to 2500tons | | Electronic hydraulic hammer | up to 5tons | | Category | [Hex & Other Standard Nuts](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) | ## Technical parameters | Close die forging | | | --- | --- | | 1) Suitable for: | big bath & medium size | | 2) Commonly used materials | 1) Wind power shaft:42CrMo4V, 34CrNiMo6,Wind power flange: S355, C22, 16Mn, 20Mn, 42CrMo, F304 2) Forged pipe fittings: SA106 CL B, SA 106 CL C, WB36, 12Cr1MoV, SA 335 P11, P12, P22, P91, SA182 Gr. F1, Gr. F5, Gr. F11 CL2, Gr. F12 CL2, Gr. F22 CL3, SA350 Gr. LF1, Gr. LF2, Gr. LF3, 3) Pressure vessel forgings: SA105, SA350 LF2, 16Mn, 20MnMo, 15MnMo, 12Cr2Mo1, 14Cr1Mo, F304, F316,17-4PH 4) Shaft rel | | 3) Industry involved: | Automotive industry/Engineering/. | | 4) Part overall dimension limit: | max 4000tons Hot die forging press: up to 2500tons Electronic hydraulic hammer: up to 5tons | | 5) Representative product: | Auto connecting rods/Steering engines/Gears/Driving shafts/Vehicle axles | | 6) Manufacturer Certification: | ISO9001 (2000)/TS16949 | | 7)feature | Precision forging hammers range from 160 tons till 4000 tons -Precision CNC machining centers for further machining process -Induction furnace for raw material heating -Heat treatment of continuous quench + temper +carburization available | | 8)Annual forging capacit | 8000toms | | 9)the unit weight of forgings | range from 0.1kg/pc till 200kg/pc | | 10)Mold development ability | According to the customer's drawing or sample. | ## Description Valve Mild Steel 12 Corner Nut is part of our hex & other standard nuts range (Nuts). ### Key details - **Standard:** GB - **Material:** Steel - **Surface Treatment:** Zinc Plating - **Application:** Auto Parts - **Certification:** ISO 9001:2008 - **Processing Object:** Non-Metallic - **Molding Style:** Forging - **Molding Technics:** Pressure Casting Available configurations include material, heat treatment, surface treatment, forging tolerance and standard. 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$0.62 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 Valve Mild Steel 12 Corner Nut? The listed minimum order is 1,000 pieces, at US$0.62 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 Valve Mild Steel 12 Corner Nut? Standard: GB; Material: Steel; Surface Treatment: Zinc Plating; Application: Auto Parts; Certification: ISO 9001:2008; Processing Object: Non-Metallic. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, heat treatment, surface treatment, forging tolerance and standard. 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 hex & other standard nuts are available? The Hex & Other Standard Nuts category lists 8,354 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-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/) ## 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