1 2 Socket Head Cap Screw & 1 4 20 Cap Screws | Wholesale
Stop overpaying for standard fasteners. Get ISO-certified 1 2 socket head cap screw and 1 4 20 cap screws at factory-direct pricing â with full traceability, fast global shipping, and zero minimum order headaches.

âď¸ Handan Boen Fastener â 50,000 sqm smart manufacturing base
đ Quick Navigation
Every purchasing manager knows the pain â but the numbers tell a brutal story:
đ´ 37% failure rate on substandard 1 4 20 cap screws from uncertified suppliers â leading to production line stoppages and rework costs.
đ´ 22% higher total cost when factoring in inspection delays, replacement shipping, and emergency downtime â a Fortune 500 study on fastener procurement.
đ´ 3-6 weeks lead time from intermediaries who add no value â just markups and delayed shipments.
đ´ Missing certifications (ISO, CE, RoHS) cause compliance rejections at customs â and lost contracts.
Your team deserves consistent quality, verified specs, and a supply partner who owns the factory â not a middleman.
We don't just sell fasteners â we manufacture them. Here's what that means for your supply chain:
Eliminate 2-3 layers of markup. Our 1 2 socket head cap screw and 1 4 20 cap screws are priced at true manufacturing cost + fair margin â typically 30-45% below distributor pricing.
All products carry ISO 9001, CE, RoHS, and FCC certifications. We test hardness, tensile strength, and thread accuracy on every production lot â 0.2% defect rate vs. industry average 2.1%.
Standard orders ship within 7-12 days. Express service available for urgent lines â we've delivered to 30+ countries including USA, Germany, UK, Australia, and UAE.
Need a custom thread length, head drive, or material grade? We support full custom design with fast prototyping â from #4 to 1-inch diameters, including 1 4 20 cap screws in special lengths.
From material selection to customs clearance â we handle it all. Free sample program for qualified buyers. ERP integration available for repeat orders.
Established in 2010, we understand international trade compliance, documentation, and payment terms (T/T, L/C, etc.). 98% on-time delivery rate across 30+ markets.
Detailed data for your engineering team â all values are tested and verified per ASTM A574 & ISO 898-1.
| Parameter | 1 2 Socket Head Cap Screw | 1 4 20 Cap Screw |
|---|---|---|
| Thread Diameter | 1/2 inch (12.7 mm) | 1/4 inch (6.35 mm) |
| Threads Per Inch (TPI) | 13 (UNC) / 20 (UNF) | 20 (UNC) |
| Material Grade | Alloy Steel 12.9 / Stainless 304/316 | Alloy Steel 10.9 / Stainless 304 |
| Hardness (HRC) | 39-44 | 32-39 |
| Tensile Strength (min) | 1,220 MPa | 1,040 MPa |
| Finish Options | Black Oxide, Zinc Plated, HDG, Plain | Zinc Plated, Plain, Black Oxide |
| Length Range | 3/4" â 8" (custom up to 12") | 1/2" â 4" (custom up to 6") |
| Certifications | ISO 9001, CE, RoHS, FCC | ISO 9001, CE, RoHS |
Real-world applications across industries â backed by case studies and performance data.
A Nebraska-based tractor manufacturer replaced their previous supplier with our 1 2 socket head cap screw â achieving 41% cost savings and zero failures over 18 months.
Our 1 4 20 cap screws are used in steel framing and heavy equipment assembly â meeting ASTM A574 standards for high-stress environments.
A Tier-1 automotive supplier in Germany uses our 1 2 socket head cap screw (grade 12.9) for engine mount assemblies â 99.98% on-time delivery over 2 years.
We're proud to supply fasteners to companies that demand the highest standards.



"We switched to Boen for our 1 2 socket head cap screw supply. Cost down 37%, lead time cut by 12 days. Their QC documentation is world-class."

â Jan R., Procurement Manager
Construction Equipment GmbH, Germany
"Consistent quality on 1 4 20 cap screws order after order. We've been buying for 3 years â zero rejects in the last 8 shipments. Highly recommend."

â Maria S., Supply Chain Director
AutoParts Inc., USA

đą WhatsApp and email conversations with satisfied buyers across USA, Europe, and Southeast Asia.
đ What is the minimum order quantity (MOQ) for 1 2 socket head cap screw?
For standard sizes (1/2" diameter, 1" to 4" length), our MOQ is 1,000 pieces. For custom lengths or special finishes, MOQ is typically 5,000 pieces. We also offer sample orders (50-100 pcs) for qualification at cost price.
đ Do you offer 1 4 20 cap screws in stainless steel?
Yes. We supply 1 4 20 cap screws in 304 stainless steel (standard) and 316 stainless steel (marine grade). All stainless options are RoHS compliant and pass 72-hour salt spray test per ASTM B117.
đ What is the typical lead time for wholesale orders?
Standard production: 10-15 working days after deposit. Express production (for repeat orders): 5-7 working days. Shipping to USA/Europe takes approximately 12-20 days by sea, 5-8 days by air.
đ How do you ensure quality consistency across batches?
We follow ISO 9001:2015 quality management system. Every batch undergoes: hardness testing (HRC), tensile strength test, thread gauge inspection, and surface finish check. A Certificate of Analysis (CoA) is provided with each shipment.
đ Can I get custom packaging or private labeling?
Absolutely. We offer OEM packaging with your brand, barcode, and part numbers. Options include: bulk cartons, poly bags, blister packs, or custom kits. Design service is free for orders above 50,000 pcs.
đ What payment terms do you accept?
We accept T/T (bank transfer), L/C (letter of credit), and PayPal for sample orders. For regular wholesale: 30% deposit + 70% balance before shipment. Long-term partners can negotiate net 30 or net 60 terms after 6 months of cooperation.
đ Do you provide free samples for evaluation?
Yes. We offer free samples for qualified buyers (you pay shipping). Sample quantities: 10-20 pieces of each specification. Express shipping (DHL/FedEx) takes 3-5 working days to most destinations.
đ How do I get a quote for 1 2 socket head cap screw and 1 4 20 cap screws?
Simply contact us with your specifications: diameter, thread pitch, length, quantity, material grade, and finish. We'll respond with a detailed quotation within 4-8 hours during business hours.
"We've been sourcing 1 2 socket head cap screw from Boen for over 2 years. The quality is consistent, and their team is always responsive. Our maintenance downtime dropped by 28% after switching."

Tom H., Maintenance Manager
Food Processing Co., UK
"The best value we've found for 1 4 20 cap screws in the market. Not just price â the thread finish is flawless, and the coating is uniform. We've standardized on Boen for all our M6 and 1/4 fasteners."

David L., Operations Director
Industrial Equipment Ltd., Australia
"Boen's customer service is outstanding. They helped us customize a 1 2 socket head cap screw with a special thread length for our automation line. Prototype to production in 10 days. Unbelievable speed."

Anna K., Technical Director
Robotics & Automation, Netherlands

âď¸ Written by Michael Chen
Senior Fastener Engineer & Export Specialist â 15+ years in industrial fastener manufacturing and global supply chain. Michael leads the technical sales team at Handan Boen Fastener, helping buyers in 30+ countries optimize their fastener procurement.
đ§ shuan@fastenboen.com  | đ +86 15630072814
Get factory-direct pricing on 1 2 socket head cap screw and 1 4 20 cap screws â with full certification and fast global shipping.
đŻ Limited-time offer: Free sample kit (valued at $120) for first-time wholesale buyers. Mention code BOEN2026.
â Free samples  | â Money-back quality guarantee  | â Dedicated account manager