6 Inch 600 Flange Bolts & 6 Inch Flange Bolts 7/16-14 Flange Bolt | Wholesale
Stop overpaying for 6 inch flange bolts that fail under pressure. Get ASTM-certified, full-thread grip with factory-direct pricing โ delivered in 10โ18 days.
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Every purchasing manager who has sourced 6 inch 600 flange bolts from low-cost suppliers knows the pain. Hereโs what keeps your operations team up at night:
Third-party testing shows that budget 7/16-14 flange bolt imports often fail proof-load tests, causing costly rework and safety risks.
Split shipments, late deliveries, and inconsistent thread pitch on 6 inch flange bolts increase your total landed cost by up to 18%.
Without mill-certified material, the 7/16-14 flange bolt you spec may not match the hardness you need โ especially in high-torque flange applications.
Every rejected batch of 6 inch 600 flange bolts means lost production time, expedited shipping fees, and strained buyer-supplier relationships.
โ Boen Fastener solves all of the above โ with factory-direct pricing and full traceability.
With 10+ years of export expertise and over 30 countries served, we deliver 6 inch 600 flange bolts that meet ASTM, ISO, and DIN standards โ every time.
We control the entire production line โ from billet to heat treat to thread rolling. That means 6 inch flange bolts with consistent hardness, accurate thread pitch, and 37% lower cost vs. distributor prices.
Every batch of 7/16-14 flange bolt comes with a mill certificate and proof-load test report. No guesswork, no hidden chemistry.
Our dedicated logistics team ensures your 6 inch 600 flange bolts arrive on time, with full container or LCL options. Real-time tracking included.
Need a custom thread length, coating, or grade? We produce 6 inch flange bolts in Grade 5, Grade 8, 304/316 stainless, and more. Your spec, our production line.
All data points verified by third-party lab testing. Suitable for industrial flange connections, heavy equipment, and structural joints.
| Parameter | 6 Inch 600 Flange Bolt | 7/16-14 Flange Bolt | Industry Standard |
|---|---|---|---|
| Thread Size | 1โณ โ 1ยผโณ (customizable) | 7/16โณ โ 14 UNF | ASTM A193 / A325 |
| Length | 6 inches (152.4 mm) ยฑ1.5 mm | 6 inches (152.4 mm) ยฑ1.5 mm | DIN 6921 / ISO 4162 |
| Grade Options | Grade 5, Grade 8, 304 SS, 316 SS | Grade 8 (HC), 316 SS | SAE J429 / ASTM F593 |
| Tensile Strength | 150,000 โ 180,000 psi (Grade 8) | 150,000 psi min. | ASTM A325 / Grade 8 |
| Hardness (HRC) | 33 โ 39 HRC | 33 โ 39 HRC | SAE J429 Grade 8 |
| Coating | Zinc-plated, HDG, Dacromet, Xylan | Zinc-plated + clear trivalent | ASTM B633 / ISO 4042 |
| Certification | ISO 9001:2015, CE, RoHS, FCC | ISO 9001:2015, CE, RoHS | Global compliance |
๐ฌ All 6 inch 600 flange bolts and 7/16-14 flange bolt products are tested per ASTM F606 for proof load, yield, and elongation.
6 inch 600 flange bolts used in ANSI 600# flanges for pipeline connections.
7/16-14 flange bolt for tractor attachments and implement frames.
6 inch flange bolts for beam-to-column connections in commercial buildings.
Grade 8 6 inch 600 flange bolts for suspension and chassis assemblies.

๐น What grade is best for 6 inch 600 flange bolts in high-pressure applications?
For ANSI 600# flanges, we recommend Grade 8 (SAE J429) or ASTM A193 Gr. B7. Both offer 150,000+ psi tensile strength and are fully traceable with mill certs.
๐น Do you stock 7/16-14 flange bolt in 304 stainless steel?
Yes, we carry 7/16-14 flange bolts in 304 and 316 stainless, as well as Grade 5 and Grade 8 carbon steel. Minimum order quantity is 500 pcs for stock sizes.
๐น What is the typical lead time for 6 inch flange bolts wholesale?
Standard production is 10โ18 days from order confirmation. Urgent orders can be expedited to 7 days with a small surcharge. We ship via FOB Tianjin or CIF to your port.
๐น Can I get a sample of 6 inch 600 flange bolts before bulk order?
Absolutely. We offer free samples (you pay shipping) for qualified buyers. Samples are shipped within 3 days with full test reports.
๐น What certifications do your 7/16-14 flange bolt products carry?
All our flange bolts are manufactured under ISO 9001:2015 and comply with CE, RoHS, and FCC standards. We also provide ASTM F606 test reports upon request.
๐น Do you offer OEM/ODM for custom 6 inch flange bolts?
Yes, we specialize in custom flange bolts โ including special thread lengths, head markings, coatings (Xylan, Dacromet, HDG), and packaging. Send your drawing for a quote within 24 hours.
๐น What payment methods do you accept for wholesale orders?
We accept T/T (30% deposit, 70% before shipment), L/C, and Western Union for international orders. For long-term contracts, net 30 terms may be available after credit review.

Anders Lindqvist
Supply Chain Manager, Nordic industrial โ Sweden
โWeโve been sourcing 6 inch 600 flange bolts from Boen for two years. Their thread consistency is the best weโve seen from Asia. No more gaging issues on our assembly line.โ

David Chen
Operations Director, Pacific Engineering โ Singapore
โThe 7/16-14 flange bolt samples we ordered exceeded our torque specs. Boenโs team helped us select the right coating for offshore use. 24% cost savings vs. our previous supplier.โ

Robert Okafor
Procurement Lead, West Africa Oil Services โ Nigeria
โReliability matters most in our environment. Boenโs 6 inch flange bolts arrived 17 days ahead of schedule with full documentation. Weโve placed three repeat orders since.โ

About the Author โ Liang Wei, Senior Fastener Engineer
With 14 years of experience in industrial fastener manufacturing and export, Liang has overseen over 800 production runs of 6 inch 600 flange bolts and 7/16-14 flange bolt products for global clients. He leads Boenโs quality lab and regularly audits heat treat and thread rolling processes.
Get your free sample + 24-hour quote. Risk-free with full money-back guarantee on first order if specs arenโt met.
๐ง shuan@fastenboen.com | ๐ +86 15630072814 | โฑ MonโSat 09:00โ17:00
๐ญ Trusted by 30+ Countries โ Factory & Certifications
Trusted by procurement teams at:
Michael Torres
Procurement Director, PetroFab Industries โ Texas, USA
โWe switched to Boen for our 6 inch 600 flange bolts after repeated failures from our previous supplier. Their Grade 8 product reduced our field rejection rate from 12% to 0.4%. The mill certs arrive with every shipment. Thatโs the standard we expect.โ