--- title: "Black Oxide 40cr Finish Double-Threaded Metric Stud Bolt" description: "Black Oxide 40cr Finish Double-Threaded Metric Stud Bolt — Double-End & Tap-End Studs. MOQ 3,000 pieces, US$0.0732 – 0.19." url: https://engineeringhardware.com/product/black-oxide-40cr-finish-double-threaded-metric-stud-bolt/ source: Engineering Hardware & Fasteners --- # Black Oxide 40cr Finish Double-Threaded Metric Stud Bolt [![Black Oxide 40cr Finish Double-Threaded Metric Stud Bolt](https://img.engineeringhardware.com/Black-Oxide-40cr-Finish-Double-Threaded-Metric-Stud-Bolt.webp)](https://img.engineeringhardware.com/Black-Oxide-40cr-Finish-Double-Threaded-Metric-Stud-Bolt.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Threaded Rods & Studs › Double-End & Tap-End Studs](https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/black-oxide-40cr-finish-double-threaded-metric-stud-bolt.md) Model no. **DIN938, DIN976** | **US$0.19**3,000–9,999 pieces | **US$0.17**10,000–19,999 pieces | **US$0.15**20,000–29,999 pieces | **US$0.0732**30,000+ pieces | | --- | --- | --- | --- | MOQ 3,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Round - **Standard:** DIN, ANSI, GB, JIS - **Grade:** 8.8 - **Finish:** Black - **Thread:** Corase and Fine - **A stud bolt is a long rod that is threaded on both ends:** the thread may extend along the complete length of the rod. Designed to beused in tension, stud bolts are a key component in flanged connections such as those found in piping systems, where they are used to join the flanges and provide a seal for the system. - **Plating can be:** Zinc, Yello Zinc, Black Oxide, HDG, Plain, etc. Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Black%20Oxide%2040cr%20Finish%20Double-Threaded%20Metric%20Stud%20Bolt%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fblack-oxide-40cr-finish-double-threaded-metric-stud-bolt%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 | Round Head | | Model NO. | DIN938, DIN976 | | Connection | Common Bolt | | Head Style | Round | | Standard | DIN, ANSI, GB, JIS | | Grade | 8.8 | | Application | Machinery, Chemical Industry, Environmental, Building | | Finish | Black | | Certification | ISO, RoHS, CE | | Delivery | Sea Freight, Air, Train, Express | | Service | Support Customized Service | | Samples | Free If It Is Available | | Thread | Corase and Fine | | Inspection | Optical Screening Instrument | | Delivery Time | 10-15 Working Days | | Transport Package | Plastic Bag, Boxes and Cartons, Pallets, Customize | | Specification | M6-M12 | | Origin | China | | HS Code | 7318159090 | | Production Capacity | 2000000pieces/Year | | A stud bolt is a long rod that is threaded on both ends | the thread may extend along the complete length of the rod. Designed to beused in tension, stud bolts are a key component in flanged connections such as those found in piping systems, where they are used to join the flanges and provide a seal for the system. | | Plating can be | Zinc, Yello Zinc, Black Oxide, HDG, Plain, etc. | | Answer | Small orders can be supported if the product is in stock. | | Category | [Double-End & Tap-End Studs](https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/) | ## Technical parameters | Standard | As per drawing | | --- | --- | | Size | M6-M12 | | Material | Carbon Steel, Stainless Steel, Duplex, etc | | Plating | Zinc, Dacromet, Geomet, Ruspert, HDG, etc | | Note | Free samples but freight cost is paid by customers(when sample is in stock) Sample fee (when samples need to be customized) | ## Description Black Oxide 40cr Finish Double-Threaded Metric Stud Bolt is part of our double-end & tap-end studs range (Threaded Rods & Studs). ### Key details - **Type:** Round Head - **Standard:** DIN, ANSI, GB, JIS - **Material:** Carbon Steel - **Grade:** 8.8 - **Thread:** Corase and Fine - **Head Style:** Round - **Finish:** Black - **Connection:** Common Bolt 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 3,000 pieces at US$0.0732 – 0.19 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 Black Oxide 40cr Finish Double-Threaded Metric Stud Bolt? The listed minimum order is 3,000 pieces, at US$0.0732 – 0.19 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$0.19 for 3,000–9,999 pieces; US$0.17 for 10,000–19,999 pieces; US$0.15 for 20,000–29,999 pieces; US$0.0732 for 30,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Black Oxide 40cr Finish Double-Threaded Metric Stud Bolt? Type: Round Head; Standard: DIN, ANSI, GB, JIS; Material: Carbon Steel; Grade: 8.8; Thread: Corase and Fine; Head Style: Round. 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 double-end & tap-end studs are available? The Double-End & Tap-End Studs category lists 3,053 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/](https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/) 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 & 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custom quote →](https://engineeringhardware.com/contact/) ## Request a quote for this product ## Related products [All Double-End & Tap-End Studs →](https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/) [![Manufacturer Alloy Steel Stud Bolt DIN835 for Wind Farms with Zinc M4-M24](https://img.engineeringhardware.com/Manufacturer-Alloy-Steel-Stud-Bolt-DIN835-for-Wind-Farms-with-Zinc-M4-M24.webp)](https://engineeringhardware.com/product/manufacturer-alloy-steel-stud-bolt-din835-for-wind-farms-with-zinc-m4-m24/) Double-End & Tap-End Studs ### [Manufacturer Alloy Steel Stud Bolt DIN835 for Wind Farms with Zinc M4-M24](https://engineeringhardware.com/product/manufacturer-alloy-steel-stud-bolt-din835-for-wind-farms-with-zinc-m4-m24/) Carbon Steel/Stainless Steel/Alloy Steel · 4.8/8.8/10.9/12.9 **US$0.012 – 0.06**MOQ 500 pieces [![Metal M8 Double Thread Stud Bolt of Accessories for 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[Eco-Friendly Cheese Head Flange Screw Stud Bolt Fastener Nut](https://engineeringhardware.com/product/eco-friendly-cheese-head-flange-screw-stud-bolt-fastener-nut/) Cheese Head · DIN, ANSI, GB, JIS, BSW **US$0.006 – 1.20**MOQ 100 pieces [![Wholesale Price Stainless Steel Ss410 Threaded Rods Thread Bar Stud Bolt](https://img.engineeringhardware.com/Wholesale-Price-Stainless-Steel-Ss410-Threaded-Rods-Thread-Bar-Stud-Bolt.webp)](https://engineeringhardware.com/product/wholesale-price-stainless-steel-ss410-threaded-rods-thread-bar-stud-bolt/) Double-End & Tap-End Studs ### [Wholesale Price Stainless Steel Ss410 Threaded Rods Thread Bar Stud Bolt](https://engineeringhardware.com/product/wholesale-price-stainless-steel-ss410-threaded-rods-thread-bar-stud-bolt/) Round Head · DIN, ANSI, GB, JIS, BSW, GOST **US$0.012**MOQ 1,000 pieces **US$0.0732 – 0.19**MOQ 3,000 piecesGet a 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