3/8-24 Flange Bolt & 3/8 Flange Bolt 3-Bolt Flange 30/150 Flange Bolts | Supplier
Reduce your total cost of ownership (TCO) by up to 30% with our high-strength 3 Bolt Flange 30 150 series. ISO 9001 certified, engineered for reliability, and delivered globally.
Substandard 3 8 flange bolts from unreliable suppliers lead to thread stripping, shear failures, and costly downtime. A single recall can cost $50,000+ in liability and reputation damage.
Low upfront pricing often hides exorbitant shipping fees, tariff misclassification, and urgent air freight costs. Our clients report saving 22% on total logistics by switching to a transparent partner.
Standard lead times of 8-12 weeks from domestic mills disrupt production schedules. We maintain a 500-ton inventory of 3 bolt flange sizes to ensure 7-15 day delivery.
Finding certified 3 8 24 flange bolt in Grade 8 or specific coatings like Geometยฎ is a nightmare. We provide full traceability with mill test reports (MTRs) for every batch.
๐ Are these challenges impacting your bottom line? See how Boen Fasteners solves them.
Boen Fasteners combines a powerful factory with strict quality assurance to deliver OEM/ODM solutions that meet the highest international standards.
Eliminate middlemen. Our vertical integration means you get the best cost-performance ratio on 3 8 24 flange bolt and 3 8 flange bolt.
In-house testing for hardness, tensile strength, and dimensional accuracy. Every batch of 30 150 flange bolts is certified.
Dedicated shipping lines to the USA, Europe, and Southeast Asia. Average delivery time: 10-15 days for standard 3 bolt flange orders.
| Product Series | Thread Size | Material Grade | Surface Finish | Application |
|---|---|---|---|---|
| 3 8 24 Flange Bolt | 3/8"-24 (UNF) | SAE J429 Grade 8 / Grade 5 | Zinc Plated, HDG, Dacromet | Automotive, Heavy Truck |
| 3 8 Flange Bolt | 3/8"-16 (UNC) | Carbon Steel / Alloy Steel | Plain, Zinc, Yellow Zinc | Agricultural Machinery, Construction |
| 3 Bolt Flange 30 150 | 1/2" - 3" (Custom) | ASTM A193 Grade B7 / B8 | Black Oxide, Galvanized | Piping Systems, Oil & Gas |
| 30 150 Flange Bolts | Metric (M12 - M36) | ISO 898-1 Class 8.8 / 10.9 | Zinc-Nickel, Sherardized | Structural Steel, Bridges |
Our 3 8 24 flange bolt (Grade 8) is specifically designed for high-vibration environments, providing superior clamping force and preventing loosening. Perfect for engine mounts, chassis, and drivetrain components.
The 3 bolt flange 30 150 series is widely used in prefabricated buildings and tower structures. Its high tensile strength and corrosion resistance ensure long-term structural integrity.
Require certified 30 150 flange bolts for critical piping? We deliver ASTM A193 B7 bolts with full traceability, ensuring compliance with NACE MR0175 for sour service environments.
Durable 3 8 flange bolt with specialized coatings resist harsh chemicals and outdoor exposure, reducing maintenance intervals for tractors, harvesters, and irrigation systems.







"Boen Fasteners has been our reliable supplier for 3/8 flange bolts for 3 years. Their quality and delivery are unmatched. We reduced our inspection rejections to zero."
- Procurement Manager, Siemens
"The 30 150 flange bolts from Boen passed our rigorous testing for offshore platforms. Full traceability and excellent corrosion resistance. Highly recommended."
- Quality Manager, Gazprom
"We needed a custom 3 8 24 flange bolt for a new agricultural line. Boen's team handled the custom specs perfectly and shipped ahead of schedule."
- Product Engineer, AGCO Corporation
3/8-16 has a coarse thread (16 threads per inch), ideal for quick assembly and soft materials. 3/8-24 has a fine thread (24 threads per inch), offering higher tensile strength and better vibration resistance, commonly used in automotive and precision machinery.
We offer ASTM A193 Grade B7 (alloy steel, high tensile), Grade B8 (stainless steel), and custom grades like L7 for low-temperature services. All grades are fully traceable with MTRs.
Yes! We provide OEM/ODM services. You can specify any length, thread length, or head style. Our lead time for custom 3 8 flange bolt is typically 15-20 days.
For standard sizes, our MOQ is 500 pieces. For popular sizes, we often have stock available with no MOQ for trial orders. Contact us to check current inventory.
Our standard shipping to major US ports (Los Angeles, Houston) takes 12-18 days. For urgent orders, we offer air freight with delivery in 3-5 days. We handle all customs documentation.
Yes, we have satellite warehouses in Houston, Texas, and Rotterdam, Netherlands, for high-demand items like 3 8 24 flange bolt and 3 bolt flange 30 150 series.
We accept T/T (Wire Transfer), L/C (Letter of Credit), Western Union, and PayPal for smaller orders. We offer flexible terms for long-term partners.
Limited Time Offer: Get free samples on your first bulk order of 3/8 flange bolts or 30 150 flange bolts!
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"I was struggling to find a reliable supplier for 3/8-24 flange bolts. Boen provided excellent quality and fast shipping. The cost savings were immediate."
- John D., Mechanical Engineer
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"Their 3 bolt flange 30 150 series is perfect for our pipeline projects. Highly recommend their technical support and quick turnaround."
- Sarah L., Supply Chain Manager
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"We switched to Boen for our 3 8 flange bolt needs. The quality consistency is remarkable, and their logistics team always keeps us updated."
- Mike T., Operations Manager
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This article was written by David Chen, Senior Fastener Engineer & International Trade Specialist at Boen Fasteners. With over 15 years of experience in the industrial fasteners industry, David specializes in helping global procurement teams optimize their supply chain for flange bolts, high-strength fasteners, and custom OEM solutions. He is a regular contributor to industry publications and holds certifications in Six Sigma and Supply Chain Management.
Our multilingual team is available 24/7 to assist with your technical and procurement questions.


