--- title: "As2528 Double End Stud Bolt API Threaded Rod" description: "As2528 Double End Stud Bolt API Threaded Rod — Double-End & Tap-End Studs. Grade: 4.8,8.8,10.9,12.9. MOQ 1,000 pieces, US$0.18." url: https://engineeringhardware.com/product/as2528-double-end-stud-bolt-api-threaded-rod/ source: Engineering Hardware & Fasteners --- # As2528 Double End Stud Bolt API Threaded Rod [![As2528 Double End Stud Bolt API Threaded Rod](https://img.engineeringhardware.com/As2528-Double-End-Stud-Bolt-API-Threaded-Rod.webp)](https://img.engineeringhardware.com/As2528-Double-End-Stud-Bolt-API-Threaded-Rod.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/as2528-double-end-stud-bolt-api-threaded-rod.md) Model no. **AS2528** US$0.18 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Grade:** 4.8,8.8,10.9,12.9 - **Customized:** Customized - **Coating:** Black,Z/P,HDG,PTFE,Plain - **Package Size:** 113.00cm * 86.00cm * 56.00cm - **Material:** B7, B7m, L7, L7m, B16, B8, B8a, B8m, B8ma, B6,660 - **Surface Finishing:** Black,Z/P,HDG,PTFE,Plain - **Standard Terms:** FOB ,CIF, EXW Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20As2528%20Double%20End%20Stud%20Bolt%20API%20Threaded%20Rod%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fas2528-double-end-stud-bolt-api-threaded-rod%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. | AS2528 | | --- | --- | | Grade | 4.8,8.8,10.9,12.9 | | Certification | ISO, GS | | Customized | Customized | | Used | Machinery Assembly, Oil & Gas Projects, Structural | | Payment | T/T,L/C,D/P | | Coating | Black,Z/P,HDG,PTFE,Plain | | Class | 4.8,8.8,10.9,12.9 | | Sample | Contact Us | | Transport Package | 25kg/Carton, 36carton/Pallet | | Specification | 1/2"-4" | | Origin | Ningbo, China | | HS Code | 7318151001 | | Production Capacity | 1000ton /Month | | Package Size | 113.00cm * 86.00cm * 56.00cm | | Package Gross Weight | 900.000kg | | Customization | Available | | Material | B7, B7m, L7, L7m, B16, B8, B8a, B8m, B8ma, B6,660 | | Surface Finishing | Black,Z/P,HDG,PTFE,Plain | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Pre-production | Dimensional checks on samples | | Pre-shipment | Full batch inspection including | | Standard Terms | FOB ,CIF, EXW | | Payment Methods | SWIFT TT transfer, D/P, LC at sight (negotiable for bulk orders) | | Category | [Double-End & Tap-End Studs](https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/) | ## Technical parameters | Standard | As2528 Double End Stud Bolt API Threaded Rod | | --- | --- | | Size | 1/2"-4" | | Grade | B7, B7M, L7, L7M, B16, B8, B8A, B8M, B8MA, B6,660 | | Surface finishing | Black,Z/P,HDG,PTFE,PLAIN | ## Description As2528 Double End Stud Bolt API Threaded Rod is part of our double-end & tap-end studs range (Threaded Rods & Studs). ### Key details - **Material:** B7, B7m, L7, L7m, B16, B8, B8a, B8m, B8ma, B6,660 - **Grade:** 4.8,8.8,10.9,12.9 - **Certification:** ISO, GS - **Used:** Machinery Assembly, Oil & Gas Projects, Structural - **Coating:** Black,Z/P,HDG,PTFE,Plain - **Class:** 4.8,8.8,10.9,12.9 - **Surface Finishing:** Black,Z/P,HDG,PTFE,Plain - **Pre-production:** Dimensional checks on samples Available configurations include grade, customized, coating, package size and material. 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$0.18 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 As2528 Double End Stud Bolt API Threaded Rod? The listed minimum order is 1,000 pieces, at US$0.18 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 As2528 Double End Stud Bolt API Threaded Rod? Material: B7, B7m, L7, L7m, B16, B8, B8a, B8m, B8ma, B6,660; Grade: 4.8,8.8,10.9,12.9; Certification: ISO, GS; Used: Machinery Assembly, Oil & Gas Projects, Structural; Coating: Black,Z/P,HDG,PTFE,Plain; Class: 4.8,8.8,10.9,12.9. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include grade, customized, coating, package size and material. 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 & 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 Double-End & Tap-End Studs →](https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/) [![Professional DIN Standard Electroplated Full Thread Stud Bolt](https://img.engineeringhardware.com/Professional-DIN-Standard-Electroplated-Full-Thread-Stud-Bolt.webp)](https://engineeringhardware.com/product/professional-din-standard-electroplated-full-thread-stud-bolt/) Double-End & Tap-End Studs ### [Professional DIN Standard Electroplated Full Thread Stud Bolt](https://engineeringhardware.com/product/professional-din-standard-electroplated-full-thread-stud-bolt/) Stainless Steel · Incoloy **US$0.20 – 1.87**MOQ 50 pieces [![Stud Bolt Hex Bolt X10nicralti3220 Incoloy 800 Uns S31050 904L 25cr: 22ni: 2mo 21crmov5-7 SA479 310ss Alloy 602 ASME B18.2.3.5m ASME B18.31.2 ASME 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