--- title: "A2-70 Excellent Anti-Rust Performance Nylon Insert 304 Lock Nut" description: "A2-70 Excellent Anti-Rust Performance Nylon Insert 304 Lock Nut — Nylon-Insert & All-Metal Lock Nuts. MOQ 10,000 pieces, US$0.006 – 0.036." url: https://engineeringhardware.com/product/a2-70-excellent-anti-rust-performance-nylon-insert-304-lock-nut/ source: Engineering Hardware & Fasteners --- # A2-70 Excellent Anti-Rust Performance Nylon Insert 304 Lock Nut [![A2-70 Excellent Anti-Rust Performance Nylon Insert 304 Lock Nut](https://img.engineeringhardware.com/A2-70-Excellent-Anti-Rust-Performance-Nylon-Insert-304-Lock-Nut.webp)](https://img.engineeringhardware.com/A2-70-Excellent-Anti-Rust-Performance-Nylon-Insert-304-Lock-Nut.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Nuts › Nylon-Insert & All-Metal Lock Nuts](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/a2-70-excellent-anti-rust-performance-nylon-insert-304-lock-nut.md) Model no. **M3-M48** | **US$0.036**10,000–49,999 pieces | **US$0.012**50,000–999,999 pieces | **US$0.006**1,000,000+ pieces | | --- | --- | --- | MOQ 10,000 pieces · Final price confirmed in your quote - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, JIS, BSW - **Grade:** A2,A4 - **Surface:** Plain - **Size:** M3-M48 - **Finish:** Plain, Galvanzied, Passivation ,HDG,Nickel Plated - **Material:** Stainless Steel Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20A2-70%20Excellent%20Anti-Rust%20Performance%20Nylon%20Insert%20304%20Lock%20Nut%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fa2-70-excellent-anti-rust-performance-nylon-insert-304-lock-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 | Model NO. | M3-M48 | | --- | --- | | Connection | Nut | | Head Style | Hexagonal | | Standard | DIN, ANSI, JIS, BSW | | Grade | A2,A4 | | Surface | Plain | | Delivery | 7~25days | | Name | Hex Flange Nut/Serrated Flange Nut | | Size | M3-M48 | | Payment | T/T or L/C | | Samples | Free | | Certification | ISO, RoHS, SGS, TUV | | Finish | Plain, Galvanzied, Passivation ,HDG,Nickel Plated | | Transport Package | Carton+Pallet | | Specification | M3-M48 | | Origin | Zhejiang, China | | HS Code | 7318160000 | | Production Capacity | 80ton/Weeks | | Customization | Available | | Material | Stainless Steel | | Type | Hexagon Head | | BOLT | DIN928,DIN933, DIN931, DIN912,DIN603,DIN7985,DIN7991,DIN6921, ASME/ANSI B 18.2.1ASME/ANSIB18.2.3.1M,GB, BSW, ISO Hex bolt , carriage bolt, heavy hex bolt, flange head bolt, achor bolt ect | | Nut | DIN934,DIN6923,DIN985,ISO4032 hex heavy hex nut, 2H nut,A563/A563M cap nut, nylon nut, ect | | Rod | threaded rod DIN975,DIN976, threaded bar DIN975 stud bolt, B7 stud bolt ect | | Screw | hex screw,DIN912; self drilling screw, DIN7504; self tapping screw,DIN7981/7982; drywall screw, pan head screw, button head screw, machine screw, chipboard screw,furniture screw,wood screw, ect | | washer | flat washer DIN125, spring washer DIN127, lock washer,square washer,spring lock washer, plain washer ect | | Category | [Nylon-Insert & All-Metal Lock Nuts](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/) | ## Technical parameters | Name | A2-70 Excellent Anti-Rust Performance Nylon Insert 304 Lock Nut | | --- | --- | | Place of Origin | Jiaxing, Zhengjiang, China | | Size | M3-M48 or non-standard as request&design | | Finish | Plain, passivation. | | Head Type | Hex head | | Material | Stainless steel | | Grade | A2-70,A4-70,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. | | Payment | T/T ,LC | ## Description A2-70 Excellent Anti-Rust Performance Nylon Insert 304 Lock Nut is part of our nylon-insert & all-metal lock nuts range (Nuts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, ANSI, JIS, BSW - **Material:** Stainless Steel - **Grade:** A2,A4 - **Size:** M3-M48 - **Head Style:** Hexagonal - **Finish:** Plain, Galvanzied, Passivation ,HDG,Nickel Plated - **Connection:** Nut Available configurations include head style, standard, grade, surface and size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 10,000 pieces at US$0.006 – 0.036 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 A2-70 Excellent Anti-Rust Performance Nylon Insert 304 Lock Nut? The listed minimum order is 10,000 pieces, at US$0.006 – 0.036 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$0.036 for 10,000–49,999 pieces; US$0.012 for 50,000–999,999 pieces; US$0.006 for 1,000,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of A2-70 Excellent Anti-Rust Performance Nylon Insert 304 Lock Nut? Type: Hexagon Head; Standard: DIN, ANSI, JIS, BSW; Material: Stainless Steel; Grade: A2,A4; Size: M3-M48; Head Style: Hexagonal. 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, surface and 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 nylon-insert & all-metal lock nuts are available? The Nylon-Insert & All-Metal Lock Nuts category lists 2,493 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-nuts/](https://engineeringhardware.com/fastener-products/nuts/nylon-insert-all-metal-lock-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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