Higher rejection rates — inconsistent shoulder diameter tolerances cause assembly failures.

Average unplanned downtime cost per incident due to fastener head stripping or fracture.

Excess logistics spend from split shipments caused by unreliable supplier lead times.

Delayed delivery windows that disrupt production scheduling and inventory planning.

Powerful Factory, Direct Pricing

30,000 sqm facility with 120+ CNC machines. Factory-direct eliminates 2-3 intermediary margins — you save 15-27% vs. distributor prices.

Quality Assurance You Can Measure

Every batch undergoes hardness testing, torque verification, and dimensional CMM inspection. ISO 9001, CE, RoHS, and FCC compliant.

High-Speed Delivery

Stock items ship within 7-12 days. Custom OEM/ODM orders in 18-25 days. DDP & express options to USA/EU.

OEM/ODM Design Capability

Custom head shapes, thread forms, shoulder lengths, and surface finishes. Free DFM feedback within 48h.

Full Traceability & ERP Integration

Heat-lot traceable, material certificates (EN 10204 3.1), and ERP-ready documentation for seamless procurement integration.

Global Compliance & Local Support

Products meet ASTM, DIN, ISO, and JIS standards. English-fluent team with timezone coverage for USA/Europe.

A leading tractor OEM in the Midwest USA replaced their imported shoulder head cap screws with our precision-ground alloy steel version. Result: 34% fewer pivot joint failures and 19% lower per-unit cost. Annual savings: $187,000.

A European scaffolding company switched to our slotted head cap screws for modular joint assembly. Torque consistency improved by 28%, and on-site installation time dropped by 15%. Faster lead times from China saved 3 weeks per project.

A Tier-1 automotive supplier in Germany uses our shoulder head cap screws for transmission valve bodies. Zero defects in 6 consecutive lots (PPAP Level 3 approved). Delivery reliability: 98.7% on-time.

A UK-based industrial distributor integrated our slotted head cap screws into their Amazon Business catalog. Cost-per-order reduced by 22% with our DDP shipping. Inventory turnover improved from 3.2x to 4.7x per year.

🛠️ Precision CNC machining center

RoHS · REACH · ISO 9001

✅ All shoulder head cap screws & slotted head cap screws are manufactured under ISO 9001:2015 certified quality management system. Third-party testing reports available upon request.

“We evaluated 5 suppliers for slotted head cap screws. Boen offered the best combination of price, lead time, and quality. Their torque consistency is excellent.”

— Marco V., Senior Buyer, Italy

“The shoulder head cap screws we ordered had a shoulder diameter tolerance of ±0.01mm. Perfect for our precision indexing table.”

— Aisha K., Mechanical Engineer, UAE

Q1: What is a shoulder head cap screw used for?

A: Shoulder head cap screws (shoulder screws) are used for precision alignment, pivot points, and sliding mechanisms where a smooth, wear-resistant bearing surface is required. Common in jigs, fixtures, and automotive assemblies.

Q2: What is a slotted head cap screw?

A: A slotted head cap screw has a single slot drive (flathead screwdriver) and is used in applications where a flush or low-profile head is needed. Common in machinery guards, electrical enclosures, and furniture assembly.

Q3: Do you offer custom sizes and materials?

A: Yes, absolutely. We provide OEM/ODM services for custom thread lengths, shoulder diameters, head styles, and materials (alloy steel, stainless, brass, titanium). Minimum order quantities are flexible.

Q4: What is the typical lead time for shoulder head cap screws?

A: Standard sizes ship within 7-12 days (from stock). Custom orders typically take 18-25 days. Express shipping (DHL, FedEx) available for urgent needs.

Q5: Do you provide quality certificates?

A: Yes. Every shipment includes material certificates (EN 10204 3.1) and dimensional inspection reports. Third-party testing (SGS, TÜV) can be arranged at cost.

Q6: How do you handle shipping to the USA and Europe?

A: We offer FOB, CIF, and DDP terms. For USA/Europe, we use sea freight (LCL/FCL) and air express. Typical delivery: 20-30 days sea, 5-8 days air. All shipments are fully insured.

Q7: What is your minimum order quantity (MOQ)?

A: For standard shoulder head cap screws and slotted head cap screws, MOQ is 500 pcs per size. Custom orders may have higher MOQs depending on complexity. We welcome sample orders for evaluation.

Q8: Can I get free samples?

A: Yes, free samples available for qualified buyers. You pay only shipping. Request samples via our contact form or email, and we’ll arrange within 3 working days.

“We’ve been sourcing shoulder head cap screws from Boen for 2 years. Their quality is consistent, and the pricing is 18% better than our previous European supplier.”

— Henrik L., Purchasing Manager, Sweden

“The slotted head cap screws we ordered arrived ahead of schedule. The dimensional accuracy saved us from reworking our assembly jigs. Highly recommend.”

— Priya S., Operations Director, India

“Boen’s team helped us customize a shoulder head cap screw with a unique shoulder length. Prototype was ready in 5 days. Great engineering support.”

— Carlos M., Technical Director, Mexico

“We switched to Boen for our entire fastener MRO. Their slotted head cap screws have a consistent slot depth that our previous supplier couldn’t match.”

— Fiona B., Supply Chain Manager, Australia

“Excellent communication and fast shipping to the UK. The shoulder head cap screws performed perfectly in our packaging machinery. Will order again.”

— David K., Maintenance Manager, UK

“Boen provided full traceability documentation for our aerospace project. Their slotted head cap screws met all NAS standards. Impressive quality.”

— Jean-Pierre R., Quality Engineer, France