Bolts For 6 150 Flange & Flange Bolt 10.9 M14 1.5 Flange Bolt | Wholesale
â Eliminate supply chain markups â Get Grade 10.9 high-strength flange bolts, precision-engineered for 6" 150# flanges, at factory-direct pricing with full traceability and fast global delivery.
đ 10+ Years Export | 30+ Countries | 2000+ Tons Annual Output
đ Table of Contents
Every year, procurement teams and operations managers lose thousands of dollars â not because of the bolt price, but because of what happens after installation.
đ´ Problem #1 â Grade Mismatch & Bolt Failure
A 10.9 flange bolt that isn't genuinely heat-treated to spec can fail under torque. One M14 1.5 flange bolt snapping on a 6" 150# flange means unscheduled downtime â average cost: $2,800â$7,500 per hour in lost production (Industry Week, 2024).
đ´ Problem #2 â Inconsistent Thread Pitch & Fit
Bolt threads that are off by even 0.1mm cause cross-threading, galling, and leak paths. For bolts for 6 150 flange assemblies, a single leak can trigger re-torque, re-inspection, and even flange replacement â a 4x cost multiplier on the original fastener.
đ´ Problem #3 â Hidden Shipping & Lead Time Traps
Many suppliers quote low prices but add air freight surcharges, warehousing fees, and split-shipment penalties. A 2025 survey by Supply Chain Dive found that 37% of industrial buyers experienced cost overruns >20% due to hidden logistics fees.
đ´ Problem #4 â Certification & Compliance Gaps
Without ISO 9001, CE, or RoHS documentation, your procurement audit fails. Non-compliant fasteners can delay shipment acceptance, especially in European and North American regulated industries. One missing cert = one rejected container.
You don't need a cheaper bolt. You need a reliable bolt at a fair price â direct from a factory that controls every step.
With over a decade of export experience and a dedicated production line for bolts for 6 150 flange assemblies, Boen delivers the three things procurement teams value most: quality traceability, on-time delivery, and total cost transparency.
Every M14 1.5 flange bolt is produced from certified alloy steel (SCM435, 40Cr, etc.) with mill certificates and batch heat treatment records. No mixed grades. No shortcuts.
Threads are rolled (not cut) for superior fatigue resistance. Each flange bolt 10.9 meets ASME B18.2.1 and DIN 6921 standards, ensuring perfect mating with 6" 150# flange nuts.
Ex-factory pricing with no middleman markup. We handle FOB/CIF/DDP, consolidate LCL shipments, and deliver to 30+ countries. Typical lead time: 15â25 days.
| Parameter | Specification / Value | Notes |
|---|---|---|
| Bolt Grade | 10.9 | High-strength alloy steel, quenched & tempered |
| Thread Size | M14 x 1.5 | Fine thread pitch 1.5mm, rolled thread |
| Flange Compatibility | 6" 150# (Class 150) | ASME B16.5 / ANSI 150 flange bolt pattern |
| Tensile Strength | 1,000â1,040 MPa | Exceeds Grade 10.9 minimum of 830 MPa |
| Hardness (HRC) | 32â39 HRC | Consistent core hardness, no surface decarburization |
| Surface Finish | Zinc plated / HDG / Dacromet / Black oxide | Salt spray test up to 720h on request |
| Standards Met | ASME B18.2.1, DIN 6921, ISO 898-1 | Full dimensional & mechanical compliance |
| Packaging | 25kg cartons / bulk pallets / custom OEM labels | Barcode tracking, export-ready |
A Texas-based valve manufacturer replaced their imported flange bolt 10.9 supply with Boen's M14 1.5 flange bolt for 6" 150# valve flanges. Result: 23% cost savings and zero fitment rejects in 8 months.
A German tractor OEM uses bolts for 6 150 flange in hydraulic block connections. Boen delivers 10,000+ pieces/month with batch traceability, reducing their incoming inspection time by 40%.
We don't just sell fasteners â we build long-term supply partnerships.

đ˘ Serving brands & enterprises across industries




Real feedback from buyers who switched to Boen for flange bolt 10.9 and M14 1.5 flange bolt supply.

David M. â Procurement Manager, USA
â â â â â"We switched our bolts for 6 150 flange to Boen 18 months ago. Zero failures, consistent threading, and the pricing is 17% below our previous supplier. Their team actually understands ASTM specs."

Klaus W. â Technical Director, Germany
â â â â â"The M14 1.5 flange bolt from Boen matches our DIN spec perfectly. We tested 500 pieces for yield strength â all above 1,000 MPa. Excellent quality control."

Ahmed R. â Supply Chain Lead, UAE
â â â â â"Boen's factory-direct model saved us 31% on total landed cost for flange bolt 10.9 orders. Delivery was 3 days early. They've earned our annual contract."

âď¸ About the Author
James Chen â Senior Technical Consultant, Boen Fastener Manufacturing Co., Ltd. With 14 years in industrial fastener engineering and export, James has advised over 200 procurement teams across Europe, North America, and the Middle East on bolt grade selection, coating optimization, and supply chain cost reduction. He is a certified ISO 9001:2015 internal auditor and a regular contributor to industry publications on fastener standards and quality assurance.
Everything you need to know about sourcing bolts for 6 150 flange, flange bolt 10.9, and M14 1.5 flange bolt wholesale.
Q1: What is the difference between a flange bolt 10.9 and a regular hex bolt?
A flange bolt 10.9 has an integrated washer face under the head, distributing clamping load over a larger area â eliminating the need for a separate washer. The 10.9 grade indicates a minimum tensile strength of 830 MPa (1,040 MPa typical). For bolts for 6 150 flange applications, the flange head also helps prevent pull-through in thinner flange materials.
Q2: How do I know if M14 1.5 flange bolt fits my 6" 150# flange?
The 6" 150# flange (ASME B16.5) typically uses M14 x 1.5 or 1/2" bolts depending on the standard. The 1.5 thread pitch is fine pitch, offering better vibration resistance. We recommend checking your flange's bolt circle diameter and hole size â Boen's technical team can cross-reference your drawing within 2 hours.
Q3: What is the minimum order quantity (MOQ) for wholesale flange bolt 10.9?
For standard M14 1.5 flange bolt sizes, our MOQ is 5,000 pieces per specification. For mixed sizes or custom coatings, we can negotiate lower MOQs for first-time trial orders. We also offer sample packs (50â200 pcs) for qualification testing.
Q4: Do you offer OEM/ODM packaging for bolts for 6 150 flange?
Yes. We provide custom OEM packaging with your brand logo, part numbers, barcodes, and material labels. We also offer private label kits for flange bolt sets â including matched nuts and washers â ready for retail or distribution.
Q5: What surface coating is best for M14 1.5 flange bolt in outdoor or corrosive environments?
For moderate corrosion resistance, zinc plated (Fe/Zn8) with yellow or blue passivation is standard. For high-corrosion environments (offshore, chemical plants), we recommend Dacromet or hot-dip galvanized (HDG) coatings. Our Dacromet-coated flange bolt 10.9 achieves 720+ hours salt spray resistance.
Q6: How do you handle international shipping for wholesale flange bolt orders?
We ship via FOB Tianjin/Shanghai, CIF to major ports, or DDP to your door. For urgent orders, we offer air freight consolidation. We provide full shipping documentation, including bill of lading, packing list, certificate of origin, and insurance.
Q7: What payment terms do you offer for first-time buyers of bolts for 6 150 flange?
We accept T/T (30% deposit, 70% before shipment), L/C at sight, and for qualified buyers, net 30â60 days after credit check. We also support PayPal for sample orders. All payments are secured through our verified corporate bank accounts.
Q8: Can I get a free sample of the M14 1.5 flange bolt before placing a bulk order?
Yes. We offer free samples (up to 10 pieces) for qualified buyers. You only pay the shipping cost. Samples are dispatched within 3 working days with full test reports. Request yours today.
Stop overpaying for flange bolt 10.9 and M14 1.5 flange bolt. Get wholesale pricing, full certifications, and delivery to your door â with zero middleman markup.
â Free samples available | â ISO 9001:2015 | â 15â25 day lead time | â DDP delivery worldwide