--- title: "Bidirectional Rolled Thread Pressure Vessel Flange Connection Stud Bolt" description: "Bidirectional Rolled Thread Pressure Vessel Flange Connection Stud Bolt — Double-End & Tap-End Studs. MOQ 10,000 pieces, US$0.012 – 0.12." url: https://engineeringhardware.com/product/bidirectional-rolled-thread-pressure-vessel-flange-connection-stud-bolt/ source: Engineering Hardware & Fasteners --- # Bidirectional Rolled Thread Pressure Vessel Flange Connection Stud Bolt [![Bidirectional Rolled Thread Pressure Vessel Flange Connection Stud Bolt](https://img.engineeringhardware.com/Bidirectional-Rolled-Thread-Pressure-Vessel-Flange-Connection-Stud-Bolt.webp)](https://img.engineeringhardware.com/Bidirectional-Rolled-Thread-Pressure-Vessel-Flange-Connection-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/bidirectional-rolled-thread-pressure-vessel-flange-connection-stud-bolt.md) Model no. **HYSLLSS0057** US$0.012 – 0.12 / piece MOQ 10,000 pieces · Final price confirmed in your quote - **Head Style:** Headless - **Standard:** ISO, GS - **Grade:** A2-70 (SS304), A4-70 (SS316) - **Customized:** Yes - **Material Grade:** A2-70 (SS304), A4-70 (SS316) Stainless Steel - **Surface Treatment:** Polish, Plain, Galvanized, HDG, Nickel Plated - **Tolerance Grade:** Standard Metric Thread Tolerance - **Package Size:** 30.00cm * 20.00cm * 20.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Bidirectional%20Rolled%20Thread%20Pressure%20Vessel%20Flange%20Connection%20Stud%20Bolt%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fbidirectional-rolled-thread-pressure-vessel-flange-connection-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 | Model NO. | HYSLLSS0057 | | --- | --- | | Connection | Double Thread Connection | | Head Style | Headless | | Standard | ISO, GS | | Grade | A2-70 (SS304), A4-70 (SS316) | | Customized | Yes | | Drawing | Yes | | Application | Flange Connection, Pressure Vessel | | Process | Cold Forging, CNC Machining, Double-End Thread Cut | | Product Type | a-Grade Stainless Steel Headless Stud Bolt | | Service | Free Samples, OEM & ODM Supported | | Material Grade | A2-70 (SS304), A4-70 (SS316) Stainless Steel | | Surface Treatment | Polish, Plain, Galvanized, HDG, Nickel Plated | | Key Features | Double Full Thread, Excellent Corrosion Resistance | | Tolerance Grade | Standard Metric Thread Tolerance | | Quality Control | 100% Pre-Shipment Inspection, Mtr, RoHS | | Transport Package | Bulk, Small Box, Plastic Box, Carton+Pallet | | Specification | M3-M64 Custom Length | | Origin | China | | HS Code | 7318160000 | | Production Capacity | 100ton/Month | | Package Size | 30.00cm * 20.00cm * 20.00cm | | Package Gross Weight | 0.500kg | | Customization | Available | | Material | Stainless Steel | | Type | Double End Stud Bolt | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Non-standard parts | 15-25days | | Category | [Double-End & Tap-End Studs](https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/) | ## Technical parameters | Item | Detailed Information | | --- | --- | | Full Product Title | Bidirectional Rolled Thread Pressure Vessel Flange Connection Stud Bolt | | Brand & Standard Model | Brand: HYS; Product Type: A-Grade Stainless Steel Headless Double End Stud Bolt; Standard: ISO, GS Industrial Standards | | Core Product Introduction | ISO & GS compliant headless double full thread stud bolt, manufactured from A2-70 (304) / A4-70 (316) stainless steel; precision rolled uniform bidirectional threads; multiple anti-corrosion surface treatments including polish, plain, galvanized, HDG hot dip galvanized, nickel plating; specifications M3-M64 with customizable length, specially designed for pressure vessel flange connection and indu | | Material & Material Grade | Material: Stainless Steel; Grade: A2-70 (SS304), A4-70 (SS316) Stainless Steel | | Mechanical Performance Grade | A2-70, A4-70 high corrosion resistant stainless steel grades | | Specification Range | M3-M64, custom adjustable machined length | | Connection Mode | Double-End Full Thread Interpenetrating Flange Fastening Connection | | Head Shape | Smooth Headless Cylindrical Shaft | | Applicable Standards | ISO International Standard, GS Industry Standard | | Surface Treatments | Mirror Polished Finish, Raw Plain Finish, Electro Galvanized, Hot Dipped Galvanized (HDG), Nickel Plated | | Production Process | Cold Forging Forming + CNC Precision Machining + Double-End Rolled Uniform Thread Processing | | Export Packaging | Bulk Pack, Small Plastic Box, Outer Export Carton + Transport Pallets | | Origin | China | | Customization Support | Fully Customizable; Accept Customer Engineering Drawings | | Service Advantages | Free test samples available, full OEM & ODM custom processing supported | | Application Scenarios | Pressure Vessel Flange Assembly, Industrial Pipeline Equipment Connection, Chemical Corrosive Environment Fastening, Heavy Machinery Sealed Joints | | Core Key Features | Precision bidirectional rolled full threads for tight sealing, excellent long-term acid & alkali corrosion resistance, multi anti-rust surface options, ISO & GS dual standard compliance, ultra-wide size range for heavy pressure equipment | | Thread Tolerance Grade | Standard Metric Coarse Thread Tolerance | | Quality Control | 100% full inspection before shipment, complete MTR material test reports supplied | ## Description Bidirectional Rolled Thread Pressure Vessel Flange Connection Stud Bolt is part of our double-end & tap-end studs range (Threaded Rods & Studs). ### Key details - **Type:** Double End Stud Bolt - **Standard:** ISO, GS - **Material:** Stainless Steel - **Grade:** A2-70 (SS304), A4-70 (SS316) - **Head Style:** Headless - **Surface Treatment:** Polish, Plain, Galvanized, HDG, Nickel Plated - **Connection:** Double Thread Connection - **Application:** Flange Connection, Pressure Vessel Available configurations include head style, standard, grade, customized and material grade. 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$0.012 – 0.12 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 Bidirectional Rolled Thread Pressure Vessel Flange Connection Stud Bolt? The listed minimum order is 10,000 pieces, at US$0.012 – 0.12 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 Bidirectional Rolled Thread Pressure Vessel Flange Connection Stud Bolt? Type: Double End Stud Bolt; Standard: ISO, GS; Material: Stainless Steel; Grade: A2-70 (SS304), A4-70 (SS316); Head Style: Headless; Surface Treatment: Polish, Plain, Galvanized, HDG, Nickel Plated. 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, customized and material grade. 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/) [![Factory Price M2 M2.5 Brass Hexagon Stud Bolt Single Head Isolation Column Circuit Board Wiring Copper Stud](https://img.engineeringhardware.com/Factory-Price-M2-M2-5-Brass-Hexagon-Stud-Bolt-Single-Head-Isolation-Column-Circuit-Board-Wiring-Copper-Stud.webp)](https://engineeringhardware.com/product/factory-price-m2-m2-5-brass-hexagon-stud-bolt-single-head-isolation-column-circuit/) Double-End & Tap-End Studs ### [Factory Price M2 M2.5 Brass Hexagon Stud Bolt Single Head Isolation Column Circuit Board Wiring Copper Stud](https://engineeringhardware.com/product/factory-price-m2-m2-5-brass-hexagon-stud-bolt-single-head-isolation-column-circuit/) Stainless Steel · A **US$0.012**MOQ 100 pieces [![Titanium Hex Bolt Ti2 Nut and Washer Stud Bolt Eye 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