--- title: "M3 M4 M5 Red Copper Weld Nut Single Projection Stud Spot Weld Thread Insert Nut" description: "M3 M4 M5 Red Copper Weld Nut Single Projection Stud Spot Weld Thread Insert Nut — Thread Repair & Solid Threaded Inserts. MOQ 1,000 pieces, US$0.012 – 0.096." url: https://engineeringhardware.com/product/m3-m4-m5-red-copper-weld-nut-single-projection-stud-spot-weld-thread-insert-nut/ source: Engineering Hardware & Fasteners --- # M3 M4 M5 Red Copper Weld Nut Single Projection Stud Spot Weld Thread Insert Nut [![M3 M4 M5 Red Copper Weld Nut Single Projection Stud Spot Weld Thread Insert Nut](https://img.engineeringhardware.com/M3-M4-M5-Red-Copper-Weld-Nut-Single-Projection-Stud-Spot-Weld-Thread-Insert-Nut.webp)](https://img.engineeringhardware.com/M3-M4-M5-Red-Copper-Weld-Nut-Single-Projection-Stud-Spot-Weld-Thread-Insert-Nut.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Threaded Inserts & Clinch Fasteners › Thread Repair & Solid Threaded Inserts](https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/m3-m4-m5-red-copper-weld-nut-single-projection-stud-spot-weld-thread-insert-nut.md) Model no. **LM-55149** | **US$0.096**1,000–49,999 pieces | **US$0.06**50,000–99,999 pieces | **US$0.012**100,000+ pieces | | --- | --- | --- | MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel, Carbon Steel - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, JIS - **Grade:** A2-70/A4-80 / 8.8/10.9/12.9 - **Finish:** Natural Polished, Passivated, Blackening - **Standards:** DIN 6926 - **Package Size:** 40.00cm * 30.00cm * 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%20M3%20M4%20M5%20Red%20Copper%20Weld%20Nut%20Single%20Projection%20Stud%20Spot%20Weld%20Thread%20Insert%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fm3-m4-m5-red-copper-weld-nut-single-projection-stud-spot-weld-thread-insert-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 | Stainless Steel, Carbon Steel | | Type | Hexagon Head With Flange | | Model NO. | LM-55149 | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, JIS | | Grade | A2-70/A4-80 / 8.8/10.9/12.9 | | Finish | Natural Polished, Passivated, Blackening | | Delivery Time | Normally in 15-40 Days. | | Quality | Customized OEM ODM Service | | Standards | DIN 6926 | | Transport Package | Boxed/Bulk/Pallet or Customized Packaging | | Specification | M2-M24 (customizable) | | Origin | China | | Package Size | 40.00cm * 30.00cm * 16.00cm | | Package Gross Weight | 25.000kg | | Category | [Thread Repair & Solid Threaded Inserts](https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/) | ## Technical parameters | Name | Weld Thread Insert Nut | | --- | --- | | Size | M2-M24 or non-standard as request&design | | Surface | White/Yellow Zinc Plated,Dacromet, Ruspert | | Material | Stainless Steel,Carbon Steel | | Grade | 4.8, 6.8, 8.8, 10.9, 12.9, A2-70, A4-80 | | Standard | GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc | | Non-standards | OEM is available, according to drawing or samples | | Samples | Samples are free | | Package | Bulk in master cartons, then on pallets, or according to customers' requirement | ## Description M3 M4 M5 Red Copper Weld Nut Single Projection Stud Spot Weld Thread Insert Nut is part of our thread repair & solid threaded inserts range (Threaded Inserts & Clinch Fasteners). ### Key details - **Type:** Hexagon Head With Flange - **Standard:** DIN, ANSI, GB, JIS - **Material:** Stainless Steel, Carbon Steel - **Grade:** A2-70/A4-80 / 8.8/10.9/12.9 - **Head Style:** Hexagonal - **Finish:** Natural Polished, Passivated, Blackening - **Connection:** Common Bolt - **Quality:** Customized OEM ODM Service Available configurations include material, head style, standard, grade and finish. 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$0.012 – 0.096 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 M3 M4 M5 Red Copper Weld Nut Single Projection Stud Spot Weld Thread Insert Nut? The listed minimum order is 1,000 pieces, at US$0.012 – 0.096 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size. ### How does the price change with quantity? Volume pricing: US$0.096 for 1,000–49,999 pieces; US$0.06 for 50,000–99,999 pieces; US$0.012 for 100,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of M3 M4 M5 Red Copper Weld Nut Single Projection Stud Spot Weld Thread Insert Nut? Type: Hexagon Head With Flange; Standard: DIN, ANSI, GB, JIS; Material: Stainless Steel, Carbon Steel; Grade: A2-70/A4-80 / 8.8/10.9/12.9; Head Style: Hexagonal; Finish: Natural Polished, Passivated, Blackening. 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 finish. 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 thread repair & solid threaded inserts are available? The Thread Repair & Solid Threaded Inserts category lists 961 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/](https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/) 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 Thread Repair & Solid Threaded Inserts →](https://engineeringhardware.com/fastener-products/threaded-inserts-clinch-fasteners/thread-repair-solid-threaded-inserts/) [![Customized Stainless Steel Metric Size Double End Threaded Studs Screwed Inserts Rods](https://img.engineeringhardware.com/Customized-Stainless-Steel-Metric-Size-Double-End-Threaded-Studs-Screwed-Inserts-Rods.webp)](https://engineeringhardware.com/product/customized-stainless-steel-metric-size-double-end-threaded-studs-screwed-inserts-rods/) Thread Repair & Solid Threaded Inserts ### [Customized Stainless Steel Metric Size Double End Threaded Studs Screwed Inserts Rods](https://engineeringhardware.com/product/customized-stainless-steel-metric-size-double-end-threaded-studs-screwed-inserts-rods/) Threaded Insert · Stainless Steel **US$0.012 – 0.12**MOQ 1,000 pieces [![Carbide Threading 22er PAC Thread 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