Powerful Factory

30,000+ m² facility with 120+ CNC machines producing 50 million fasteners annually. Your triple square bolt order never competes for capacity.

Quality Assurance

Every batch of true bolts and turbo bolts undergoes 3-stage inspection — chemical analysis, hardness test, and torque validation. < 0.3% defect rate.

High-Speed Delivery

15–25 day standard lead time on tyre bolt and triple square bolt orders. Express shipping available in 7–10 days. Track your container in real-time.

Full Compliance

CE, ISO 9001, RoHS, FCC — all certifications provided with every shipment of true bolts and turbo bolts. No customs delays.

OEM/ODM Design

Custom triple square bolt geometries, coatings, and packaging. Send your drawing — we deliver PPAP Level 3 samples in 12 days.

Unbeatable Value

Factory-direct pricing on tyre bolts and turbo bolts saves you 22–35% vs. distributor prices. Volume discounts from 5,000 pieces.

Agricultural Machinery

Triple square bolts and true bolts used in tractor transmissions, harvesters, and irrigation systems. A Polish farm equipment manufacturer reduced downtime by 34% after switching to our fasteners.

Automotive & Off-Road

Turbo bolts and tyre bolts engineered for high-vibration environments. A US off-road vehicle assembler reported zero field failures over 18 months after adopting our turbo bolts for chassis connections.

Construction & Structural

True bolts and triple square bolts certified for steel connections and heavy anchoring. A UK construction firm cut on-site rework by 41% using our pre-torqued fasteners.

Industrial Equipment

Turbo bolts and tyre bolts specified for conveyor systems, pumps, and presses. A Dutch OEM improved MTBF by 28% after switching to our high-strength turbo bolts.

🔹 What is a triple square bolt and how is it different from a standard hex bolt?

A triple square bolt (also known as XZN or 12-point) features a 12-spline drive designed for higher torque applications. It provides 30% more contact area than a standard hex, reducing cam-out and fastener damage. Ideal for automotive and heavy machinery where true bolts and turbo bolts require precise torque control.

🔹 What is the minimum order quantity (MOQ) for true bolts and turbo bolts?

Our standard MOQ is 5,000 pieces per size for true bolts and turbo bolts. For triple square bolts and tyre bolts, we can accommodate 2,000 pieces for first-time orders. We also offer sample packs (50–200 pcs) for qualification testing.

🔹 Do you provide custom OEM/ODM services for triple square bolts?

Absolutely. We offer full OEM/ODM capabilities — custom thread sizes, head styles, coatings (zinc-nickel, Dacromet, black oxide), and packaging. Send your drawing or sample, and we deliver PPAP Level 3 samples within 12–15 days. Minimum custom order: 10,000 pieces.

🔹 What certifications come with your tyre bolts and turbo bolts?

Every shipment of tyre bolts and turbo bolts includes CE, ISO 9001, and RoHS certifications. Upon request, we also provide FCC, UL, and material test reports. Our compliance team ensures all documentation meets EU and US import requirements.

🔹 What are your shipping terms and lead times for true bolts?

Standard lead time: 15–25 days after deposit for true bolts and triple square bolts. Express service: 7–10 days (surcharge applies). We ship via FOB Tianjin, CIF, or DDP depending on your preference. Full container and LCL both available.

🔹 Can I get a sample before placing a bulk order for turbo bolts?

Yes. We offer free samples for qualified buyers (you pay shipping). Sample packs include 10–50 pieces of your chosen turbo bolts or tyre bolts with full material certification. Request via shuan@fastenboen.com.

🔹 How do you ensure quality control for triple square bolt production?

Our 3-stage QC process includes: (1) incoming raw material chemical analysis, (2) in-process dimensional inspection every 500 pieces, and (3) final batch torque testing and hardness validation. Defect rate: < 0.3%. We also provide full traceability with heat number and batch code.

🔹 What payment methods do you accept for international orders?

We accept T/T (30% deposit, 70% before shipment), L/C at sight, and Western Union for smaller orders. For established customers, we offer net 30 terms after 3 successful transactions. All payments are handled through our corporate accounts at Handan Boen Fastener Manufacturing Co., Ltd.