--- title: "J U Style Spire Nuts Flat Spring Nut for Sheet Steel" description: "J U Style Spire Nuts Flat Spring Nut for Sheet Steel — T-Nuts, Slot Nuts & Channel Spring Nuts. MOQ 100 pieces, US$0.048 – 6.00." url: https://engineeringhardware.com/product/j-u-style-spire-nuts-flat-spring-nut-for-sheet-steel/ source: Engineering Hardware & Fasteners --- # J U Style Spire Nuts Flat Spring Nut for Sheet Steel [![J U Style Spire Nuts Flat Spring Nut for Sheet Steel](https://img.engineeringhardware.com/J-U-Style-Spire-Nuts-Flat-Spring-Nut-for-Sheet-Steel.webp)](https://img.engineeringhardware.com/J-U-Style-Spire-Nuts-Flat-Spring-Nut-for-Sheet-Steel.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Nuts › T-Nuts, Slot Nuts & Channel Spring Nuts](https://engineeringhardware.com/fastener-products/nuts/t-nuts-slot-nuts-channel-spring-nuts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/j-u-style-spire-nuts-flat-spring-nut-for-sheet-steel.md) Model no. **SN** US$0.048 – 6.00 / piece MOQ 100 pieces · Final price confirmed in your quote - **Head Style:** Spring Nuts - **Standard:** DIN, ANSI, GB, JIS - **Grade:** as Required - **Custom:** Available - **Package Size:** 35.00cm * 25.00cm * 20.00cm - **Material:** Stainless Steel/Carbon Steel/Special Alloy/Ti - **Size:** Metric M4–M12; UNC 8-32 to 3/4″, including 1/4″-20, 5/16″-18, 3/8″-16 and 1/2″-13. - **Finishes:** Plain, Passivated, Zinc Plated, Black Oxide, Nickel Plated, Chrome Plated, Hot-Dip Galvanized and custom finishes. Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20J%20U%20Style%20Spire%20Nuts%20Flat%20Spring%20Nut%20for%20Sheet%20Steel%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fj-u-style-spire-nuts-flat-spring-nut-for-sheet-steel%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. | SN | | --- | --- | | Connection | Common Bolt | | Head Style | Spring Nuts | | Standard | DIN, ANSI, GB, JIS | | Grade | as Required | | Custom | Available | | Lead Time | 3 to 45 Days | | Trade Term | EXW, Fca, Fob, CFR , CIF, DAP or DDP | | Sampling | Available | | Transport Package | Cartons with Waterproof Film and Wooden Frame | | Specification | As Required | | Origin | China | | HS Code | 7318160000 | | Production Capacity | 10000 Tons/Year | | Package Size | 35.00cm * 25.00cm * 20.00cm | | Package Gross Weight | 25.000kg | | Customization | Available | | Material | Stainless Steel/Carbon Steel/Special Alloy/Ti | | Type | Spring Nuts | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Size | Metric M4–M12; UNC 8-32 to 3/4″, including 1/4″-20, 5/16″-18, 3/8″-16 and 1/2″-13. | | Stainless Steel | SS303, SS304, SS304L, SS316, SS316L, SS321, SS410, SS420 | | Duplex & Special Alloys | 2205, 2507, 904L, 254SMO, Titanium, Inconel, Hastelloy, Monel | | Carbon & Alloy Steel | C20, C45, 1010, 1035, 1045 | | Finishes | Plain, Passivated, Zinc Plated, Black Oxide, Nickel Plated, Chrome Plated, Hot-Dip Galvanized and custom finishes. | | Standards | DIN 557 for standard metric square nuts and DIN 562 for thin metric square nuts. Inch-series and non-standard designs are supplied to the specified drawing. | | ViaWay Global | Reliable Manufacturing Support for Global Industrial Buyers | | Use | Chemical composition and material grade verification. | | CNC Machining | Precision CNC turning, milling, drilling, tapping, and threading for non-standard fasteners, special alloy parts, and custom hardware components. | | Cold forming | Supported for standard and semi-standard fasteners such as bolts, screws, nuts, rivets, and other formed metal parts in suitable quantities. The suitable process will be selected according to material, size, structure, tolerance, and order quantity. | | Hot forging | Available for large-size fasteners, heavy-duty components, and custom hardware parts that require higher strength, durable structure, and further machining after forging. | | Small-Batch Support | Low-volume, trial, and project-based production for custom fasteners, special alloy components, and drawing-based hardware parts before larger repeat orders are supported. | | Stamping & Bending Support | Stamped and bent metal parts such as brackets, clips, plates, pipe clamps, and curtain wall connectors are supported. These parts can be produced according to drawings, samples, dimensions, or project requirements. | | Surface Treatment | Surface treatment options include passivation, pickling, polishing, electro polishing, sand blasting, black oxide, plating, GEOMET, Dacromet and other finishes according to material grade and application requirements. | | Metarials Supports | 304 / 316 / 316L Stainless Steel | | Category | [T-Nuts, Slot Nuts & Channel Spring Nuts](https://engineeringhardware.com/fastener-products/nuts/t-nuts-slot-nuts-channel-spring-nuts/) | ## Technical parameters | Size: | Metric M4–M12; UNC 8-32 to 3/4″, including 1/4″-20, 5/16″-18, 3/8″-16 and 1/2″-13. | | --- | --- | | Materials: | Stainless Steel: SS303, SS304, SS304L, SS316, SS316L, SS321, SS410, SS420Duplex & Special Alloys: 2205, 2507, 904L, 254SMO, Titanium, Inconel, Hastelloy, MonelCarbon & Alloy Steel: C20, C45, 1010, 1035, 1045 | | Finishes: | Plain, Passivated, Zinc Plated, Black Oxide, Nickel Plated, Chrome Plated, Hot-Dip Galvanized and custom finishes. | | Product Types | Channel nuts with long, short or top springs; springless channel nuts also available. | | Standards: | DIN 557 for standard metric square nuts and DIN 562 for thin metric square nuts. Inch-series and non-standard designs are supplied to the specified drawing. | | Trade Terms | EXW, FCA, FOB, CFR , CIF or DDP. | | Sample Service | Available samples can be provided for evaluation. Custom samples may involve material or tooling costs. | | Packing | Bulk packed in cartons, up to 25 kg per carton, with export pallets, waterproof film, wooden cases or customized packaging. | | 304 / 316 / 316L Stainless Steel | General corrosion-resistant stainless steel options for standard and custom fasteners, machinery assembly, marine, outdoor, and industrial use. | | --- | --- | | Duplex 2205 / 2507 | Can be reviewed for chloride, offshore, chemical, desalination, and more demanding corrosion environments when required by project conditions. | | Titanium Alloy | Lightweight and corrosion-resistant material options for selected aerospace, marine, chemical, and precision equipment applications. | | Nickel-Based Superalloys | Inconel 718 / 625 can be reviewed for high-temperature, high-strength, or severe chemical environments. Hastelloy and Monel options can also be reviewed for selected chemical, seawater, and marine applications | | Specialty Stainless & Non-Ferrous Materials | 904L, 310 / 310S, A286, 17-4PH, Nitronic 60, 254SMO, and other project-based materials can be reviewed according to requirements. | | Custom Material on Request | Custom material options can be reviewed according to drawings, samples, standards, or project requirements. Final material selection should be confirmed according to drawings, standards, and service environment. | ## Description J U Style Spire Nuts Flat Spring Nut for Sheet Steel is part of our t-nuts, slot nuts & channel spring nuts range (Nuts). ### Key details - **Type:** Spring Nuts - **Standard:** DIN, ANSI, GB, JIS - **Material:** Stainless Steel/Carbon Steel/Special Alloy/Ti - **Grade:** as Required - **Size:** Metric M4–M12; UNC 8-32 to 3/4″, including 1/4″-20, 5/16″-18, 3/8″-16 and 1/2″-13. - **Head Style:** Spring Nuts - **Connection:** Common Bolt - **Custom:** Available Available configurations include head style, standard, grade, custom and package size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 100 pieces at US$0.048 – 6.00 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 J U Style Spire Nuts Flat Spring Nut for Sheet Steel? The listed minimum order is 100 pieces, at US$0.048 – 6.00 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 J U Style Spire Nuts Flat Spring Nut for Sheet Steel? Type: Spring Nuts; Standard: DIN, ANSI, GB, JIS; Material: Stainless Steel/Carbon Steel/Special Alloy/Ti; Grade: as Required; Size: Metric M4–M12; UNC 8-32 to 3/4″, including 1/4″-20, 5/16″-18, 3/8″-16 and 1/2″-13.; Head Style: Spring Nuts. 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, custom and package 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 t-nuts, slot nuts & channel spring nuts are available? The T-Nuts, Slot Nuts & Channel Spring Nuts category lists 1,888 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/nuts/t-nuts-slot-nuts-channel-spring-nuts/](https://engineeringhardware.com/fastener-products/nuts/t-nuts-slot-nuts-channel-spring-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 T-Nuts, Slot Nuts & Channel Spring Nuts →](https://engineeringhardware.com/fastener-products/nuts/t-nuts-slot-nuts-channel-spring-nuts/) [![Steel Black Oxide 10-24 M3 M4 M5 Lock Replacement Rail T Nut](https://img.engineeringhardware.com/Steel-Black-Oxide-10-24-M3-M4-M5-Lock-Replacement-Rail-T-Nut.webp)](https://engineeringhardware.com/product/steel-black-oxide-10-24-m3-m4-m5-lock-replacement-rail-t-nut/) T-Nuts, Slot Nuts & Channel Spring Nuts ### [Steel Black Oxide 10-24 M3 M4 M5 Lock Replacement Rail T Nut](https://engineeringhardware.com/product/steel-black-oxide-10-24-m3-m4-m5-lock-replacement-rail-t-nut/) Round Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.084 – 0.12**MOQ 1,000 pieces [![M4, M5, M6, M8, M10 Zinc Alloy Flat Head Furniture Nut Wood Insert 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0.06**MOQ 1,000 pieces **US$0.048 – 6.00**MOQ 100 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20J%20U%20Style%20Spire%20Nuts%20Flat%20Spring%20Nut%20for%20Sheet%20Steel%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fj-u-style-spire-nuts-flat-spring-nut-for-sheet-steel%2F)