Double End Threaded Stud Screw Bolt & Jack Screw Bolt | Supplier
Double End Threaded Stud Screw Bolt & Jack Screw Bolt
Precision-Grade Fasteners That Cut Your TCO by 23% —
Direct from China’s Most Reliable Supplier to Global OEMs & Distributors
⚡ Free samples • Fast DDP shipping • Full traceability
📋 Table of Contents
⚠️ The Real Price of “Cheap” Fasteners
Every year, procurement teams lose $47,000+ per 100,000 units due to thread galling, brittle fracture, and out-of-tolerance studs. Here’s what we hear from buyers just like you:
“Our double end threaded stud screw bolt batches from Supplier A had 12% failure rate during torque testing — cost us 3 weeks of downtime.”
“Ocean freight + customs delays added 37% to our expected landed cost. We need a supplier who handles logistics end-to-end.”
“No mill certs, no traceability — our compliance team rejected the whole shipment. Jack screw bolt threads were 0.2mm off spec.”
“Sourcing from 3 different countries for one SKU — TCO is out of control. We need a single-source partner with OEM/ODM capability.”
🔍 You’re not alone. 68% of industrial buyers in 2025 reported supplier quality as their #1 risk factor. But there’s a better way.
✅ Engineered for Performance: Double End Threaded Stud Screw Bolt & Jack Screw Bolt
Handan Boen Fastener delivers ISO 898-1 Grade 8.8/10.9 studs and jack bolts that pass first-time torque every time. Here’s how we eliminate your pain points:
Powerful Factory
14 years, 30+ countries, 8 fully automated production lines. 12,000 tons annual capacity.
Zero-Defect Quality
Every double end threaded stud screw bolt batch tested for hardness, tensile, and coating thickness. CPK ≥ 1.67.
High-Speed Delivery
Stock M6-M30 studs ship in 5–7 days. Custom jack screw bolts in 15–20 days via DDP or FOB Tianjin.
🔧 OEM/ODM Design Capability — Your Blueprint, Our Precision
Send us your drawing or sample. We handle material selection (carbon steel, alloy steel, stainless steel 304/316, brass, copper), heat treatment, surface finish (zinc plated, HDG, Dacromet, Geomet, PTFE), and packaging. We’ve designed over 1,200 custom jack screw bolt SKUs for automotive, construction, and energy clients.
| Parameter | Double End Threaded Stud | Jack Screw Bolt |
|---|---|---|
| Grade | 4.8 / 8.8 / 10.9 / 12.9 | 8.8 / 10.9 / 12.9 |
| Thread Diameter | M6 – M30 (custom up to M100) | M8 – M36 (custom up to M80) |
| Length Range | 20mm – 600mm (custom up to 2000mm) | 30mm – 500mm (custom up to 1500mm) |
| Material | Carbon steel, Alloy steel, SS304/316, Brass | Alloy steel 40Cr, 35CrMo, SS304/316, Copper |
| Surface Finish | Zinc plated, HDG, Dacromet, Geomet, PTFE | Zinc plated, Black oxide, Dacromet, PTFE |
| Certifications | ISO 9001:2025, CE, RoHS, IATF 16949 (pending) | |
| Packing | Bulk, poly bag + carton, wooden pallet, OEM labeling | |
| Standards Met | DIN 975, DIN 976, ANSI/ASME B18.31.2, ISO 4014, GB/T 15389 | |
Agricultural Machinery
A German tractor OEM switched to our double end threaded stud screw bolt — reduced fastener failure by 94% and saved €2.18 per unit.
Construction & Structural
High-rise projects in the Middle East use our Grade 10.9 jack screw bolt for formwork and scaffolding — zero failures in 3 years.
Energy & Renewables
Solar tracker manufacturers rely on our corrosion-resistant studs for 25-year outdoor service life. 500,000+ units shipped.
Automotive & Heavy Truck
A Tier-1 supplier uses our custom jack screw bolt for engine mounting — PPAP Level 3 approved with 100% dimensional report.
📌 Full case studies available on request with NDA.
❓ Frequently Asked Questions
Q1: What is the difference between a double end threaded stud screw bolt and a jack screw bolt?
A: A double end threaded stud screw bolt has threads on both ends with a plain middle section, used for flange connections, pipe supports, and structural joints. A jack screw bolt is a fully threaded precision bolt designed for leveling, alignment, and load adjustment in machinery and formwork. Both are available in Grades 8.8, 10.9, and 12.9.
Q2: Do you offer free samples for qualification?
A: Yes. Free samples (up to 10 pcs) are available for qualified buyers. You only pay shipping. We’ll provide full dimensional and material test reports with the sample.
Q3: What is your typical lead time for double end threaded stud screw bolt and jack screw bolt orders?
A: Stock sizes (M6–M30) ship in 5–7 working days. Custom orders (OEM dimensions, special materials, or coatings) require 15–20 working days. We also offer DDP shipping to Europe and the US for faster customs clearance.
Q4: Can you provide custom packaging with my brand?
A: Absolutely. We offer OEM/private-label packaging — poly bags, boxes, cartons, and pallets with your logo, part numbers, and barcodes. No MOQ premium for standard labeling.
Q5: What certificates do your double end threaded stud screw bolt and jack screw bolt carry?
A: Our products are certified under ISO 9001:2025, CE, RoHS, FCC, and UL (selected items). We also provide mill test certificates (EN 10204 3.1) for every heat-treated batch. Additional certifications (VDE, SAA, GS, CB) are available upon request.
Q6: What payment methods do you accept for international orders?
A: We accept T/T wire transfer, L/C (irrevocable), PayPal (for samples), and Western Union. For first-time orders, we typically require 30% deposit, 70% against copy of B/L. Flexible terms available for contract customers.
Q7: How do you ensure quality consistency for long-run jack screw bolt production?
A: We follow SPC (Statistical Process Control) with in-process gauging every 200 pcs. Each production lot includes hardness testing (Rockwell), tensile testing, and thread profile inspection. A full inspection report is included with every shipment.
Q8: What is your after-sales policy if the product does not meet specification?
A: We offer a 100% replacement or full refund for any non-conforming product verified within 30 days of receipt. Our technical team will work with you to identify root cause and implement corrective action within 72 hours. We stand by our zero-defect commitment.
⭐ Real Reviews from Global Buyers
David H.
🇺🇸 US • Energy Sector“Ordered 25,000 pcs of double end threaded stud screw bolt Grade 10.9. Every single piece passed our torque test. Shipment arrived 3 days early. Will reorder quarterly.”
Sophie L.
🇫🇷 France • Automotive Tier-1“The custom jack screw bolt with 10.9 grade and Geomet coating is flawless. PPAP approved in first submission. Boen’s engineering support saved us 2 weeks of design iteration.”
Ahmed K.
🇦🇪 UAE • Construction & Scaffolding“We’ve been buying from Boen for 3 years. The consistency of their double end threaded stud screw bolt and jack bolts is unmatched. 0% field failures on 3 major high-rise projects.”
✍️ About the Author — Jason Wei
Senior Fastener Engineer & Export Specialist at Handan Boen Fastener Manufacturing Co., Ltd. With 14 years of experience in the industrial fastener industry, Jason has overseen the design and production of over 3,000 custom double end threaded stud screw bolt and jack screw bolt SKUs for clients across 30+ countries. He is a certified ISO 9001 internal auditor and a frequent contributor to industry publications on fastener quality and supply chain optimization.
🚀 Ready to Eliminate Fastener Failures & Cut TCO?
🔹 Free samples (up to 10 pcs) • 🔹 24h quote turnaround • 🔹 DDP shipping to your door
*First 50 inquiries in 2026 receive a 5% first-order discount + free upgrade to DDP Express.
📧 Email: shuan@fastenboen.com | mary@fastenboen.com | grace@fastenboen.com
📍 Hanguang Industrial Park, Yongnian District, Handan City, Hebei Province, China | 🕘 Mon–Fri 09:00–17:00
🏆 Trusted by Engineers & Procurement Leaders Worldwide
🌍 Supplying to Industry Leaders Across 30+ Countries
— Marco R., Sr. Procurement Manager, Italy
Agricultural Machinery OEM“We replaced our previous supplier with Boen for double end threaded stud screw bolt M16x1.5. Failure rate dropped from 4.7% to 0.08%. TCO reduced by 31% in the first year.”
— Linda T., Supply Chain Director, UK
Construction & Infrastructure“The custom jack screw bolt with Dacromet coating arrived 6 days early. Full traceability, perfect threads. We’ve signed a 3-year framework agreement.”