--- title: "Precise Stainless Steel Square Nut DIN557" description: "Precise Stainless Steel Square Nut DIN557 — Square Nuts. Material: Carbon Steel, Standard: DIN, ANSI, GB, JIS, BSW. MOQ 500 pieces, US$0.30." url: https://engineeringhardware.com/product/precise-stainless-steel-square-nut-din557/ source: Engineering Hardware & Fasteners --- # Precise Stainless Steel Square Nut DIN557 [![Precise Stainless Steel Square Nut DIN557](https://img.engineeringhardware.com/Precise-Stainless-Steel-Square-Nut-DIN557.webp)](https://img.engineeringhardware.com/Precise-Stainless-Steel-Square-Nut-DIN557.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Nuts › Square Nuts](https://engineeringhardware.com/fastener-products/nuts/square-nuts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/precise-stainless-steel-square-nut-din557.md) Model no. **DIN557** US$0.30 / piece MOQ 500 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, JIS, BSW - **Grade:** 2,5,8,10 - **Size:** M4-M100 - **Surface Treament:** Black, Zinc Plated, Zinc (Yellow) Plated, H.D.G. ,Dacromet,etc. - **Packing:** 25 kgs per box, 36 box per pallet, 900 kgs per pallet Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Precise%20Stainless%20Steel%20Square%20Nut%20DIN557%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fprecise-stainless-steel-square-nut-din557%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 | Carbon Steel | | Type | Hexagon Head | | Model NO. | DIN557 | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, JIS, BSW | | Grade | 2,5,8,10 | | Transport Package | 25kgs Per Box,36 Boxes Per Pallet,900kgs Per Palle | | Specification | M4-M100 | | Origin | Ningbo, China | | HS Code | 7318160000 | | Production Capacity | 1300ton/Month | | Size | M4-M100 | | Surface Treament | Black, Zinc Plated, Zinc (Yellow) Plated, H.D.G. ,Dacromet,etc. | | Packing | 25 kgs per box, 36 box per pallet, 900 kgs per pallet | | Best Competitive Advantages | 1.OEM Accepted | | Category | [Square Nuts](https://engineeringhardware.com/fastener-products/nuts/square-nuts/) | ## Technical parameters | Standard: | Stainless Steel Square Nut DIN557 | | --- | --- | | Grade: | 2,5,8,10 | | Size: | M4-M100 | | Surface Treament: | Black, Zinc Plated, Zinc (Yellow) Plated, H.D.G. ,Dacromet,etc. | | Material: | Carbon Steel, Alloy Steel, Stainless Steel,etc. | | Packing: | 25 kgs per box, 36 box per pallet, 900 kgs per pallet | ## Description Precise Stainless Steel Square Nut DIN557 is part of our square nuts range (Nuts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, ANSI, GB, JIS, BSW - **Material:** Carbon Steel - **Grade:** 2,5,8,10 - **Size:** M4-M100 - **Head Style:** Hexagonal - **Connection:** Common Bolt - **Packing:** 25 kgs per box, 36 box per pallet, 900 kgs per pallet Available configurations include material, head style, standard, grade and size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 500 pieces at US$0.30 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 Precise Stainless Steel Square Nut DIN557? The listed minimum order is 500 pieces, at US$0.30 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 Precise Stainless Steel Square Nut DIN557? Type: Hexagon Head; Standard: DIN, ANSI, GB, JIS, BSW; Material: Carbon Steel; Grade: 2,5,8,10; Size: M4-M100; 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 material, head style, standard, grade 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 square nuts are available? The Square Nuts category lists 483 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/nuts/square-nuts/](https://engineeringhardware.com/fastener-products/nuts/square-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 Square Nuts →](https://engineeringhardware.com/fastener-products/nuts/square-nuts/) [![Anti Vibration Cage Nut Floating Square Clip Nut M4-M12 Sheet Metal Cabinet Stainless Steel](https://img.engineeringhardware.com/Anti-Vibration-Cage-Nut-Floating-Square-Clip-Nut-M4-M12-Sheet-Metal-Cabinet-Stainless-Steel.webp)](https://engineeringhardware.com/product/anti-vibration-cage-nut-floating-square-clip-nut-m4-m12-sheet-metal-cabinet/) Square Nuts ### [Anti Vibration Cage Nut Floating Square Clip Nut M4-M12 Sheet Metal Cabinet Stainless Steel](https://engineeringhardware.com/product/anti-vibration-cage-nut-floating-square-clip-nut-m4-m12-sheet-metal-cabinet/) Square Nut · DIN, GB **US$0.18 – 998.40**MOQ 2,000 pieces [![Bulk Square Nuts GB/T 39 Zinc Plated Utility Grade Heavy Duty For Line Hardware And Pole Crossarm Fittings](https://img.engineeringhardware.com/Bulk-Square-Nuts-GB-T-39-Zinc-Plated-Utility-Grade-Heavy-Duty-For-Line-Hardware-And-Pole-Crossarm-Fittings.webp)](https://engineeringhardware.com/product/bulk-square-nuts-gb-t-39-zinc-plated-utility-grade-heavy-duty-for-line-hardware-and/) Square Nuts ### [Bulk Square Nuts GB/T 39 Zinc Plated Utility Grade Heavy Duty For Line Hardware And Pole Crossarm Fittings](https://engineeringhardware.com/product/bulk-square-nuts-gb-t-39-zinc-plated-utility-grade-heavy-duty-for-line-hardware-and/) Fasteners · Non-GB **US$2.40**MOQ 10,000 pieces [![OEM Custom 5/16-18 Thin Rectangular Flat Square Aluminum Profile Nut](https://img.engineeringhardware.com/OEM-Custom-5-16-18-Thin-Rectangular-Flat-Square-Aluminum-Profile-Nut.webp)](https://engineeringhardware.com/product/oem-custom-5-16-18-thin-rectangular-flat-square-aluminum-profile-nut/) Square Nuts ### [OEM Custom 5/16-18 Thin Rectangular Flat Square Aluminum Profile Nut](https://engineeringhardware.com/product/oem-custom-5-16-18-thin-rectangular-flat-square-aluminum-profile-nut/) Square Nut · DIN, ANSI, GB, JIS, ISO **US$0.012 – 0.12**MOQ 10,000 pieces [![Nickel Plated Square Nut for Aluminum Profile](https://img.engineeringhardware.com/Nickel-Plated-Square-Nut-for-Aluminum-Profile.webp)](https://engineeringhardware.com/product/nickel-plated-square-nut-for-aluminum-profile/) Square Nuts ### [Nickel Plated Square Nut for Aluminum Profile](https://engineeringhardware.com/product/nickel-plated-square-nut-for-aluminum-profile/) Square Head · DIN, ANSI, GB, JIS, GOST, BSW, ISO **US$0.012 – 0.036**MOQ 10,000 pieces [![Special High Precision Stainless Steel Square Nut](https://img.engineeringhardware.com/Special-High-Precision-Stainless-Steel-Square-Nut.webp)](https://engineeringhardware.com/product/special-high-precision-stainless-steel-square-nut/) Square Nuts ### [Special High Precision Stainless Steel Square Nut](https://engineeringhardware.com/product/special-high-precision-stainless-steel-square-nut/) Square Head · Customized **US$0.006 – 0.012**MOQ 1,000 pieces [![Wholesale Hardware Copper Brass 62/65 Square Nut Connector Nut Rollor Nuts](https://img.engineeringhardware.com/Wholesale-Hardware-Copper-Brass-62-65-Square-Nut-Connector-Nut-Rollor-Nuts.webp)](https://engineeringhardware.com/product/wholesale-hardware-copper-brass-62-65-square-nut-connector-nut-rollor-nuts/) Square Nuts ### [Wholesale Hardware Copper Brass 62/65 Square Nut Connector Nut Rollor Nuts](https://engineeringhardware.com/product/wholesale-hardware-copper-brass-62-65-square-nut-connector-nut-rollor-nuts/) Square Head · DIN, ANSI, GB **US$0.0072**MOQ 50 pieces [![A4-80 DIN557 Square Nut Stainless Steel Square Nut](https://img.engineeringhardware.com/A4-80-DIN557-Square-Nut-Stainless-Steel-Square-Nut.webp)](https://engineeringhardware.com/product/a4-80-din557-square-nut-stainless-steel-square-nut/) Square Nuts ### [A4-80 DIN557 Square Nut Stainless Steel Square Nut](https://engineeringhardware.com/product/a4-80-din557-square-nut-stainless-steel-square-nut/) Square Head · DIN **US$0.006 – 0.036**MOQ 10,000 pieces [![Automotive Industry Zinc-Flake Coated Silver Plated Steel Aluminum Custom Square Nuts Size M3-M12 DIN557 Square Tube Thin Nut](https://img.engineeringhardware.com/Automotive-Industry-Zinc-Flake-Coated-Silver-Plated-Steel-Aluminum-Custom-Square-Nuts-Size-M3-M12-DIN557-Square-Tube-Thin-Nut.webp)](https://engineeringhardware.com/product/automotive-industry-zinc-flake-coated-silver-plated-steel-aluminum-custom-square/) Square Nuts ### [Automotive Industry Zinc-Flake Coated Silver Plated Steel Aluminum Custom Square Nuts Size M3-M12 DIN557 Square Tube Thin Nut](https://engineeringhardware.com/product/automotive-industry-zinc-flake-coated-silver-plated-steel-aluminum-custom-square/) Square Head · DIN, ANSI, GB, JIS, GOST **US$0.012 – 0.06**MOQ 1,000 pieces **US$0.30**MOQ 500 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Precise%20Stainless%20Steel%20Square%20Nut%20DIN557%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fprecise-stainless-steel-square-nut-din557%2F)