1/2-20 Socket Head Cap Screw & 1/2 Inch Cap Screw | Supplier
1/2-20 Socket Head Cap Screw & 1/2 Inch Cap Screw — Factory-Direct Precision Fasteners
⚡ Cut your fastener spend by 30–40% without compromising on tensile strength or thread accuracy. Supplied directly from our Handan factory to OEMs, distributors, and procurement teams in the USA & Europe.
🔩 The Hidden Cost of "Cheap" Cap Screws
Every quarter, procurement teams and technical directors tell us the same frustrations:
🔴 Inconsistent thread fit — 1/2-20 socket head cap screw from low-cost sources often fails Go/No-Go gauges, causing assembly line stoppages. 🔴 Surface corrosion within weeks — substandard plating on 1 2 inch cap screw leads to rust, field failures, and warranty claims. 🔴 Hidden logistics costs — split shipments, delayed customs clearance, and minimum order quantities that inflate total landed cost by 22–35%. 🔴 Zero technical support — no material certs, no traceability, no engineering backup when you need it.
✅ Why Industry Buyers Choose Boen for 1/2-20 Socket Head Cap Screw
We don't just sell fasteners — we deliver certified quality, end-to-end traceability, and supply chain peace of mind.
Factory-Direct Power
We produce 1/2 inch cap screw and socket head cap screw in-house at our Handan plant. No middlemen — you get true factory pricing and full control over quality.
Precision Thread Geometry
Every 1/2-20 socket head cap screw is cold-formed and thread-rolled to ASME B18.3 / ISO 4762. Class 3A tolerance ensures smooth assembly every time.
Full Material Traceability
Alloy steel 10.9/12.9, stainless 304/316 — we provide mill certs + chemical analysis with every shipment. No guesswork, no risk.
Global Logistics, Local Speed
We ship to 30+ countries with consolidated LCL/FCL options. Average door-to-door: 12–18 days to USA/Europe. No hidden fees.
OEM/ODM Flexibility
Need a custom drive, special coating, or non-standard length? We design and produce your proprietary cap screw with short lead times.
Dedicated Technical Support
From material selection to torque specs — our engineers speak your language. Direct WhatsApp/email access to your account manager.
📋 Technical Specifications — 1/2-20 Socket Head Cap Screw & 1/2 Inch Cap Screw
All data verified per ASME B18.3 / ISO 4762. Download full spec sheet with your inquiry.
| Parameter | 1/2-20 Socket Head Cap Screw | 1/2 Inch Cap Screw (UNC) |
|---|---|---|
| Thread Size | 1/2-20 UNF | 1/2-13 UNC |
| Grade / Material | Alloy Steel 10.9 / 12.9, SS304, SS316 | Alloy Steel 10.9 / 12.9, SS304, SS316 |
| Hardness (HRC) | 32–39 (10.9) / 39–44 (12.9) | 32–39 (10.9) / 39–44 (12.9) |
| Tensile Strength (min) | 1,040 MPa (10.9) / 1,220 MPa (12.9) | 1,040 MPa (10.9) / 1,220 MPa (12.9) |
| Thread Tolerance | Class 3A (UNF) | Class 3A (UNC) |
| Coating Options | Zinc, HDG, Dacromet, Geomet, Black Oxide | Zinc, HDG, Dacromet, Geomet, Black Oxide |
| Standards Met | ASME B18.3, ISO 4762, DIN 912 | ASME B18.3, ISO 4762, DIN 912 |
| Certifications | ISO 9001, CE, RoHS, reach compliant | ISO 9001, CE, RoHS, reach compliant |
🏭 Real Applications — Where Our Cap Screws Deliver
From automotive assembly lines to heavy construction equipment, our fasteners are trusted by engineers worldwide.
Automotive & EV
Powertrain · Chassis · Battery packsA Tier-1 supplier uses our 1/2-20 socket head cap screw (12.9 grade) for engine block fastening. Result: zero thread failure over 2M units.
Construction & Structural
Steel framing · Bridges · Heavy equipmentOur 1/2 inch cap screw (HDG coated) is spec'd for outdoor structural joints. Passed 1,000h salt spray test — no red rust.
Agricultural Machinery
Tractors · Harvesters · Irrigation systemsA European OEM switched to Boen for 1/2-20 socket head cap screw and reduced fastener cost by 37% while improving torque consistency.
🏆 Trusted by Global Brands & OEMs
We are proud to serve leading enterprises across multiple continents. Here are just a few of our partners.
"Boen's 1/2-20 socket head cap screw delivered consistent class 3A fit across 12,000 pcs — no rejects. Their traceability is world-class."
💬 Real Reviews from Real Buyers
⭐⭐⭐⭐⭐ "We switched our entire MRO line to Boen's 1/2 inch cap screw. Quality is consistent, pricing is 31% lower than our previous supplier. Highly recommend."
⭐⭐⭐⭐⭐ "The traceability documents are impeccable. Every batch of 1/2-20 socket head cap screw comes with full certs. Our QA team is impressed."
⭐⭐⭐⭐⭐ "Fast delivery and excellent communication. The 1/2 inch cap screw (12.9 grade) met our spec perfectly. Will definitely order again."
⭐⭐⭐⭐⭐ "We tested 5 suppliers for 1/2-20 socket head cap screw. Boen was the only one that passed every gauge test. Now our go-to supplier."
❓ Frequently Asked Questions About 1/2-20 Socket Head Cap Screw
❓ What is the difference between 1/2-20 socket head cap screw and 1/2 inch cap screw?
❓ Do you offer free samples for 1/2-20 socket head cap screw?
❓ What grade is best for high-strength applications?
❓ What is the typical lead time for an order of 1/2 inch cap screw?
❓ Do you provide certificates of conformance and material test reports?
❓ How do you handle shipping to the USA or Europe?
❓ Can I get a custom length or drive type for 1/2 inch cap screw?
🚀 Ready to Secure Your Supply Chain?
Get factory-direct pricing on 1/2-20 socket head cap screw and 1/2 inch cap screw. Free samples for qualified buyers. 15-day lead time or less.
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