16 Flange Bolts & 18 150 Flange Bolts 18 Flange Bolts | Maker
Engineered for heavy-duty performance. 16 flange bolts, 18 150 flange bolts, and 18 flange bolts that slash your procurement costs by up to 37% while meeting ISO, CE, and ASTM standards.
Every year, procurement teams chasing lowest unit price on 16 flange bolts or 18 150 flange bolts discover the hidden toll: field failures, project delays, and skyrocketing total cost of ownership (TCO). Here is what we hear from our 4,500+ customers:

With 15+ years of export expertise and factory-direct pricing, we deliver 18 150 flange bolts and 16 flange bolts that outperform global standards — at a TCO that makes your CFO smile.
Eliminate 2–3 layers of intermediaries. Our 16 flange bolts and 18 flange bolts ship from our 12,000m² facility in Hebei — saving you 25–40% vs. distributor prices.
Every batch of 18 150 flange bolts undergoes 7-stage QC (chemical analysis, hardness test, torque validation, thread gauge, dimensional check, salt spray, and UT). 99.7% pass rate in 2025.
Full CE, ISO 9001, RoHS, and ASTM documentation provided with every shipment of 16 flange bolts — no customs delays, no compliance risk.
Stock 18 flange bolts ship in 3–5 days. Custom 18 150 flange bolts lead times: 12–18 days — 60% faster than industry average.
Need a specific thread pitch, flange diameter, or coating? Our engineers design custom 16 flange bolts and 18 flange bolts to your exact specs — MOQ from 500 pcs.
From FOB Shanghai to DDP your warehouse. We handle shipping, customs clearance, and documentation for 18 150 flange bolts orders — stress-free procurement.
| Parameter | 16 Flange Bolts | 18 150 Flange Bolts | 18 Flange Bolts |
|---|---|---|---|
| Thread Diameter | M16 (16 mm) | M18 × 150 mm length | M18 (18 mm) |
| Material Grade | Carbon Steel 8.8 / 10.9 / Stainless Steel 304 | Alloy Steel 10.9 / 12.9 / Stainless Steel 316 | Carbon Steel 8.8 / 10.9 / Stainless Steel 304 |
| Flange Diameter | 30 mm | 34 mm | 34 mm |
| Tensile Strength (min) | 800 MPa (Grade 8.8) | 1,040 MPa (Grade 10.9) | 800 MPa (Grade 8.8) |
| Surface Finish | Zinc Plated / HDG / Black Oxide | Zinc-Nickel / Dacromet / Geomet | Zinc Plated / HDG / Plain |
| Standards Met | ISO 4162, DIN 6921, ASTM F1852 | ISO 4162, DIN 6921, ASTM F1852 | ISO 4162, DIN 6921, ASTM F1852 |
| Certifications | ✅ CE · ISO 9001 · RoHS | ✅ CE · ISO 9001 · RoHS · ASTM | ✅ CE · ISO 9001 · RoHS |
📌 Custom grades, coatings, and dimensions available on request. Contact our engineering team for OEM/ODM solutions.
From construction steel structures to agricultural machinery and automotive assemblies — our 18 150 flange bolts and 16 flange bolts are engineered for the toughest environments.
High-strength 18 flange bolts used in bridge girders, high-rise steel frames, and heavy equipment anchoring. Our 18 150 flange bolts provide superior shear strength in moment connections.
16 flange bolts withstand vibration, dust, and moisture in tractors, harvesters, and irrigation systems. Zinc-nickel coating delivers 720+ hr salt spray resistance.
Grade 10.9 18 150 flange bolts secure chassis components, suspension systems, and engine mounts. Full traceability with batch numbers — meeting IATF 16949 standards.
The primary difference is thread diameter: 16 flange bolts have a M16 thread (16 mm), while 18 flange bolts have a M18 thread (18 mm). 18 150 flange bolts refer specifically to M18 bolts with a 150 mm length. Choose based on your application's load requirements and mating nut size.
Absolutely. We offer OEM/ODM customization for 18 150 flange bolts and all other sizes. Custom lengths from 30 mm to 300 mm, with special thread pitches, flange geometries, and coatings. MOQ: 500 pcs per specification. Contact our engineering team for a quote.
Every shipment of 16 flange bolts and 18 flange bolts includes CE, ISO 9001, and RoHS certificates. For 18 150 flange bolts we also provide ASTM F1852 compliance documentation. Additional certifications (FCC, UL, GS) are available on request.
For standard 18 150 flange bolts in stock, lead time is 3–5 working days. For custom specifications, production takes 12–18 working days after sample approval. We ship via DHL, FedEx, sea freight, or air freight — whichever fits your timeline.
Yes! We provide free samples (up to 5 pcs) of 16 flange bolts or 18 flange bolts for qualified buyers. You only pay for shipping. This allows you to test fit, torque, and corrosion resistance before placing a bulk order.
Simply email us at shuan@fastenboen.com or use the contact form below. Include your specification, quantity, target price, and delivery port. We'll respond with a proforma invoice within 24 hours. Payment terms: T/T, L/C, or Western Union.
Our standard MOQ for 16 flange bolts is 1,000 pcs per size. For 18 150 flange bolts and 18 flange bolts, the MOQ is 500 pcs per size. For OEM/ODM custom orders, MOQ is 500 pcs per specification. We offer tiered pricing for volume orders above 10,000 pcs.
"We use 16 flange bolts in our agricultural equipment. Boen's quality is consistently better than European suppliers at 40% lower cost. The thread tolerance is perfect every time."

"The 18 150 flange bolts from Boen saved our project. Fast delivery, full CE documentation, and the batch traceability our quality team requires. Now our preferred supplier."

"We tested 18 flange bolts from three Chinese suppliers. Boen's tensile strength and coating uniformity were the best. 37% cost reduction vs. our previous US supplier. Highly recommend."


With 18+ years in the industrial fastener industry, David has overseen 2,400+ export projects across 30 countries, specializing in high-strength bolting solutions for construction, energy, and heavy machinery. He leads Boen's R&D and quality assurance teams, ensuring every batch of 16 flange bolts, 18 150 flange bolts, and 18 flange bolts meets international standards. David is a certified ISO 9001 lead auditor and regularly contributes to industry whitepapers on fastener reliability and TCO optimization.

⏳ Limited-time offer: Free samples + free shipping for first-time orders over $500. Risk-free guarantee: Full refund if product doesn't meet spec.
📧 Email: shuan@fastenboen.com · mary@fastenboen.com · grace@fastenboen.com · stella@fastenboen.com
📞 Phone: +86 15630072814 / +86 13293070568
🏢 Address: Hanguang Industrial Park, Yongnian District, Handan City, Hebei Province, China
🌟 Trusted by Industry Leaders Across 30+ Countries
Since 2010, Handan Boen Fastener has supplied millions of flange bolts to well-known brands and mid-market manufacturers. Our 16 flange bolts and 18 150 flange bolts are specified by engineers who demand reliability.