🔧 Head Stripping & Rejection

Substandard hex sockets strip at just 2.8 Nm — 40% below the industry minimum. Result? Scrapped assemblies, delayed shipments, and rework costs that eat your margin.

📏 Dimensional Drift

A 0.08 mm variance in head height might seem minor — until your automation feeder jams 3 times per shift. Our m3 button head screw holds Ø5.50 ±0.05 mm, every batch.

🚢 Hidden Logistics Cost

Split shipments, urgent air freight, and customs holds due to missing certificates add up to 18–25% on top of the unit price. We ship with full compliance docs on every pallet.

Powerful Factory, Direct Pricing

Over 15,000 sqm manufacturing base in Handan, China. 200+ sets of cold-forming, CNC, and heat-treatment equipment. You save 20–30% vs. trading companies.

Quality Assurance You Can Measure

Every batch of m3 button head screw and m4 button head screw undergoes hardness testing, salt spray (48–72h), and dimensional CMM sampling. PPAP Level 3 available.

High-Speed Delivery

Standard lead time: 20–25 days. Express (OEM/ODM): 15 days. We track every shipment and share real-time logistics status — no black box.

OEM/ODM Design Support

Custom head markings, drive types (Torx, hex, Phillips), material grades (304, 316, 10.9), and surface finishes (black oxide, zinc-nickel, Dacromet). Send us your drawing.

Full Compliance & Traceability

ISO 9001, CE, RoHS, and REACH compliant. Heat number and batch traceability from raw material to finished pallet. Your auditor will be happy.

One-Stot Service, Global Reach

From material selection to logistics tracking, we handle it all. Shipping to 30+ countries including USA, Germany, UK, France, and Australia. FOB, CIF, DDP terms supported.

Automotive Electronics

ECU housings, sensor brackets, and interior trim. Our m4 button head screw in 316 SS provides corrosion resistance for under-hood applications. 50,000+ pcs shipped monthly to a German Tier-1.

Industrial Automation

Robotic arms, linear guides, and control panels. The low-profile button head prevents snagging on moving parts. M3 button head screw in 10.9 grade delivers 8.8 Nm proof load.

Telecommunications

5G antenna mounts, server rack rails, and enclosure panels. Non-magnetic 304 SS option avoids signal interference. Zero corrosion complaints in 3+ years of field use.

— Mark T.
Procurement Manager, UK Automation

“We switched to Boen for our m4 button head screw supply. Reject rate dropped from 3.2% to 0.4%. Their PPAP documentation saved us a full audit day.”

— Elena V.
Technical Director, German Automotive

“Consistent head height on the m3 button head screw within ±0.05 mm. Our pick-and-place robots run without jams. Reliable partner.”

— Carlos D.
Operations Manager, US Industrial

“15-day express delivery on a 200k order. Real-time tracking and no paperwork delays. This is how a supplier should operate.”

🔹 What is the difference between an M3 and M4 button head screw?

The primary difference is thread diameter: M3 = 3 mm, M4 = 4 mm. The m3 button head screw has a 5.50 mm head diameter, while the m4 button head screw has a 7.00 mm head. Choose based on your application’s load and clearance requirements.

🔹 What materials are available for button head screws?

We offer 304 stainless steel (A2-70), 316 stainless steel (A4-80), and alloy steel 10.9 grade. For custom requirements, we also support 410 SS, 17-4 PH, and brass. Contact our team for material recommendations.

🔹 Do you offer custom head markings or drive types?

Yes. We can customize head markings (customer logo, grade, torque mark) and drive types: Hex, Torx (T6, T8, T10), Phillips, or Pozidriv. OEM/ODM is our specialty.

🔹 What is the minimum order quantity (MOQ)?

For standard M3 and M4 button head screws, our MOQ is 5,000 pieces per size. For OEM/ODM projects, MOQ is 20,000 pieces. We offer sample packs (50 pcs) for qualification at a nominal cost.

🔹 How do you ensure quality consistency across batches?

Every production batch is tested for hardness (Rockwell), tensile strength, dimensional accuracy (CMM), and salt spray resistance. We provide a Certificate of Conformance with every shipment. PPAP Level 3 available upon request.

🔹 What are the shipping terms and lead times?

Standard lead time: 20–25 days. Express (OEM/ODM): 15 days. We ship via FOB, CIF, or DDP. Shipping to USA and Europe typically takes 18–25 days by sea, 5–8 days by air. We provide real-time tracking.

🔹 Do you offer free samples for testing?

Yes. We provide sample packs (50 pcs of your chosen size and material) for a nominal shipping fee. The sample cost is fully refundable when you place a production order. Request your sample pack here.

🔹 What certifications do your products carry?

Our m3 button head screw and m4 button head screw are manufactured under ISO 9001:2015 certified quality management system. We also provide CE, RoHS, and REACH compliance documentation. Specific certifications like UL or FDA can be arranged for OEM projects.

Andreas K.
CEO, Swiss MedTech

“We use m4 button head screw in our diagnostic devices. Boen’s 316 SS version passed our 2000-hour salt spray test. Zero failures. We’ve increased our order volume by 300%.”

Sarah L.
Supply Chain Manager, UK Robotics

“The dimensional consistency of the m3 button head screw is outstanding. We’ve eliminated feeder jams completely. Their team is responsive and professional.”

Lars P.
Project Lead, Danish Industrial

“Boen delivered 150k m4 button head screw in 18 days — 3 days ahead of schedule. DDP terms made customs a breeze. This is our go-to fastener supplier now.”

📝 About the Author

James Lin – Senior Fastener Engineer & Export Specialist

James has 14 years of experience in the fastener industry, specializing in product design, material selection, and quality system optimization. He has led over 200 export projects to Europe and North America, helping buyers reduce supply chain risk while improving product performance. He is currently the Technical Director at Handan Boen Fastener Manufacturing Co., Ltd.