Dimensional Variance

Cheap imports often fail ASME B18.3 tolerances, causing assembly jams and stripped threads.

Production Downtime

Industry data shows 70% of mechanical assembly failures trace back to faulty fasteners.

Communication Gaps

Misunderstood specs (Metric vs. Imperial, thread class) lead to costly rework and delays.

High MOQs & Inventory Costs

Supplier minimums force you to tie up capital in slow-moving inventory of specialized sizes.

Agricultural Machinery

A leading tractor manufacturer replaced their high-cost European supplier with our 1 1/4" Grade 8 SHCS, reducing fastener costs by 37% while improving delivery lead time from 12 weeks to 3 weeks.

Automotive Prototyping

An EV startup needed custom #0-80 SHCS with a unique head profile for a battery module. Boen delivered prototypes in 5 days, enabling them to meet their critical launch deadline.

Structural Steel

For a high-rise project in Dubai, we supplied 1 1/4" SHCS with Dacromet coating, providing over 1,000 hours of salt spray resistance, exceeding the spec by 25%.

"We switched to Boen for our #0-80 SHCS needs. The dimensional consistency is flawless, and their inspection reports are incredibly detailed. Our rework rate dropped to near zero."

— Senior Purchasing Manager, German Automotive Tier 1

"The 1 1/4 inch socket head cap screws from Boen saved us 20% on logistics alone. Their factory-direct model and efficient shipping make a huge difference for our bottom line."

— Operations Director, US Heavy Equipment Manufacturer

What does "0 80" mean in socket head cap screw dimensions?

"0" refers to the screw size (#0), and "80" refers to the threads per inch (TPI). So a #0-80 screw has a nominal diameter of 0.0600 inches and 80 threads per inch, which is a UNF (Unified Fine) thread.

What is the tolerance on the 1 1/4 inch screw head diameter?

Per ASME B18.3, the head diameter for a 1 1/4" socket head cap screw is 1.875 inches maximum. Boen Fasteners manufactures to a tighter internal tolerance of +/- 0.003 inches to ensure absolute reliability in high-stress applications.

Can you provide a Certificate of Conformance (COC) for these screws?

Absolutely. We provide full traceability and can issue a COC, Mill Test Reports (MTRs), and dimensional inspection reports with every order. We also offer batch-level testing for critical applications.

What is the typical lead time for a custom order of #0-80 screws?

For standard dimensions, our lead time is 15-20 working days. For custom dimensions or materials, lead times typically range from 20-35 working days, depending on the complexity and quantity.

Do you offer a plating service for socket head cap screws?

Yes, we offer in-house and partnered plating services including zinc (clear, yellow, blue), black oxide, nickel, cadmium, hot-dip galvanizing, and Dacromet. We can match any military or commercial spec.

What is the difference between a socket head cap screw and a hex bolt?

A socket head cap screw has a cylindrical head with a hex drive, offering a cleaner appearance and higher torque capacity compared to a standard hex bolt. It is typically used in applications requiring a high-strength, flush, or internally wrenched fastening solution.

Do you offer free samples for evaluation?

Yes, we provide free samples to qualified B2B buyers. You just need to cover the shipping cost. This allows you to validate our quality and dimensional accuracy before committing to a full order.

James Mitchell

Procurement Manager, UK Aerospace

"We needed #0-80 SHCS with a specific passivation for a satellite component. Boen not only matched the spec perfectly but also provided full batch traceability. Their technical expertise is genuinely world-class."

Maria Santos

Supply Chain Director, Brazilian Mining

"The 1 1/4 inch socket head cap screws from Boen are incredibly consistent. We tested 100 pieces from a batch of 5,000 and every single one was within tolerance. Their quality control is unmatched."

Andreas Weber

Technical Director, German Automation

"We were skeptical about switching to an Asian supplier for our precision fasteners. Boen proved us wrong. Their communication is excellent, and the product quality is on par with the best European brands at a 30% lower cost."