--- title: "High Precision Metal Bellows Nut for Expansion Joint Components" description: "High Precision Metal Bellows Nut for Expansion Joint Components — Hex & Other Standard Nuts. Grade: HRC29-35, Grade 6. MOQ 100,000 pieces, US$0.36 – 1.20." url: https://engineeringhardware.com/product/high-precision-metal-bellows-nut-for-expansion-joint-components/ source: Engineering Hardware & Fasteners --- # High Precision Metal Bellows Nut for Expansion Joint Components [![High Precision Metal Bellows Nut for Expansion Joint Components](https://img.engineeringhardware.com/High-Precision-Metal-Bellows-Nut-for-Expansion-Joint-Components.webp)](https://img.engineeringhardware.com/High-Precision-Metal-Bellows-Nut-for-Expansion-Joint-Components.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/high-precision-metal-bellows-nut-for-expansion-joint-components.md) US$0.36 – 1.20 / piece MOQ 100,000 pieces · Final price confirmed in your quote - **Material:** 30hgsa/30crmnsia, Stainless Steel - **Head Style:** Hex - **Standard:** DIN, ANSI, GB, JIS, GOST, BSW - **Grade:** HRC29-35, Grade 6 - **Finish:** Plain Finish, Zinc Plated/Nickel Plated and Other - **Package Size:** 25.00cm * 25.00cm * 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%20High%20Precision%20Metal%20Bellows%20Nut%20for%20Expansion%20Joint%20Components%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhigh-precision-metal-bellows-nut-for-expansion-joint-components%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 | Material | 30hgsa/30crmnsia, Stainless Steel | | --- | --- | | Type | Bellows Nut/Union Nut | | Connection | Common Bolt | | Head Style | Hex | | Standard | DIN, ANSI, GB, JIS, GOST, BSW | | Grade | HRC29-35, Grade 6 | | Certificate | ISO9001, Ppap Level #, RoHS, CE | | Finish | Plain Finish, Zinc Plated/Nickel Plated and Other | | Sample | Available | | Customization | as Per Your Drawing | | Trade Term | EXW/Fob/CIF/DDP etc. | | Transport Package | Carton/Pallet | | Specification | M6 M8 M10 M12 M14 M20 and other | | Origin | Jiangsu, China | | HS Code | 731816 | | Production Capacity | 10000000 | | Package Size | 25.00cm * 25.00cm * 16.00cm | | Package Gross Weight | 25.000kg | | https | //wxsunnyfastener.en.made-in-china.com/contact-info.html | | Category | [Hex & Other Standard Nuts](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) | ## Description High Precision Metal Bellows Nut for Expansion Joint Components is part of our hex & other standard nuts range (Nuts). ### Key details - **Type:** Bellows Nut/Union Nut - **Standard:** DIN, ANSI, GB, JIS, GOST, BSW - **Material:** 30hgsa/30crmnsia, Stainless Steel - **Grade:** HRC29-35, Grade 6 - **Head Style:** Hex - **Finish:** Plain Finish, Zinc Plated/Nickel Plated and Other - **Connection:** Common Bolt - **Certificate:** ISO9001, Ppap Level #, RoHS, CE 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 100,000 pieces at US$0.36 – 1.20 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 High Precision Metal Bellows Nut for Expansion Joint Components? The listed minimum order is 100,000 pieces, at US$0.36 – 1.20 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 High Precision Metal Bellows Nut for Expansion Joint Components? Type: Bellows Nut/Union Nut; Standard: DIN, ANSI, GB, JIS, GOST, BSW; Material: 30hgsa/30crmnsia, Stainless Steel; Grade: HRC29-35, Grade 6; Head Style: Hex; Finish: Plain Finish, Zinc Plated/Nickel Plated and Other. 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 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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