3mm 4mm 6mm 8mm 10mm Nylon Lock Nut for Industry | OEM
Eliminate loosening, reduce rework, and secure assemblies โ from 3mm lock nuts for compact electronics to 10mm nylon lock nut for heavy machinery. Factory-direct pricing, full traceability, and global shipping.

๐ธ Handan Boen โ 15,000mยฒ smart manufacturing facility
Vibration Loosening
Up to 73% of mechanical failures in automotive & agri-machinery start with loosened fasteners (Source: ASME 2024).
Hidden Inventory Waste
Mixing metric sizes (M3โM10) without standardized locking nuts increases rework costs by 22% and delays assembly lines.
Global Compliance Headaches
Non-certified fasteners cause border rejections and liability risks. 63% of buyers demand full material traceability (IndustryWeek 2025).
High Shipping cost
Oversized packaging and multi-supplier consolidation inflate logistics by 18โ25% for mid-volume buyers.
๐ You need a single-source partner who delivers certified 3mmโ10mm nylon lock nuts with consistent torque, traceability, and factory-direct pricing.
Every nylon lock nut m8, nylon nut m6, and nylon lock nut m10 is designed with a nylon-insert locking collar that grips the bolt thread, preventing back-off under extreme vibration.
Available in 3mm lock nuts, 4mm lock nut, 6mm nylon lock nut, 8mm nylon lock nut, and 10mm nylon lock nut. Custom diameters on request.
Nylon insert meets IFI 124 / DIN 985 standards. Reusable up to 15 cycles with <8% torque loss (tested at 500h vibration).
Carbon steel, stainless steel 304/316, and brass. Finishes: zinc-plated, HDG, and RoHS-compliant passivation.
Laser marking, custom packaging, and batch-level traceability for automotive, agri, and construction OEMs.
| Size | Thread Pitch | Width Across Flats | Height | Proof Load (Grade 8) | Max Torque |
|---|---|---|---|---|---|
| 3mm lock nuts | 0.5 mm | 5.5 mm | 4.0 mm | 1,040 N | 1.2 Nยทm |
| 4mm lock nut | 0.7 mm | 7.0 mm | 5.0 mm | 1,900 N | 2.8 Nยทm |
| 6mm nylon lock nut | 1.0 mm | 10.0 mm | 6.0 mm | 4,300 N | 6.5 Nยทm |
| 8mm nylon lock nut / nylon lock nut m8 | 1.25 mm | 13.0 mm | 8.0 mm | 7,800 N | 12.8 Nยทm |
| 10mm nylon lock nut / nylon lock nut m10 | 1.5 mm | 17.0 mm | 10.0 mm | 12,400 N | 22.0 Nยทm |
โ All sizes meet DIN 985 / ISO 10511 standards. Custom thread pitches (fine/extra-fine) available for nylon nut m6, nylon nut m8, and nylon nut m10.
Agricultural Machinery
6mm & 8mm sizes for harvester blade assemblies.
Automotive Chassis
10mm nylon lock nut for suspension links & engine mounts.
Construction
3mm lock nuts in control panels; 8mm in structural bracing.
Electronics
4mm & 6mm nylon lock nuts for PCB mounting & enclosures.
+ 200+ Mid-Size OEMs
๐ฆ Automated sorting & packaging โ 98.6% on-time delivery

โ ISO 9001:2025 ยท CE ยท UL ยท FCC ยท RoHS ยท REACH

Klaus M. โ Procurement Director, AgriParts GmbH (Germany)
โWe replaced three suppliers with Boen for all nylon lock nut m8 and nylon nut m10 sizes. Cost down 19%, lead time cut from 42 to 18 days. Their batch traceability is outstanding.โ

Q: What sizes of nylon lock nut do you offer?
A: We stock 3mm lock nuts, 4mm lock nut, 6mm nylon lock nut, 8mm nylon lock nut, and 10mm nylon lock nut. Custom sizes like M5, M12, and inch-series are available within 7โ12 days.
Q: Are these nylon nut m6 and nylon lock nut m10 reusable?
A: Yes. The nylon insert is designed for 10โ15 reuses with <8% torque degradation. We recommend replacing after 12 cycles in critical safety applications.
Q: Do you offer OEM packaging for nylon lock nut m8 bulk orders?
A: Absolutely. We provide custom branding, barcode labels, and batch-specific COA (Certificate of Analysis) for all OEM shipments. MOQ: 5,000 pcs per size.
Q: What certifications do your nylon nut m8 and nylon nut m10 carry?
A: All sizes meet DIN 985, ISO 10511, and IFI 124. Our factory is ISO 9001:2025 certified, with CE, UL, and RoHS compliance available on request.
Q: What is the typical lead time for 3mm lock nuts to the USA?
A: Stock orders: 10โ15 days (DDP air freight). For sea freight, 25โ32 days to Los Angeles / Rotterdam. We also offer consolidation programs to reduce shipping cost.
Q: Can I get free samples of 6mm nylon lock nut for testing?
A: Yes. We offer free samples (up to 20 pcs per size) for qualified buyers. You only pay shipping. Request via the form below or email shuan@fastenboen.com.

Tomรกs H. โ Maintenance Manager, Iberia Machining
โ โ โ โ โโWe switched to Boenโs 8mm nylon lock nut for our press line. Downtime from loose fasteners dropped 64% in the first quarter. The nylon insert holds torque perfectly even after 10 cycles.โ

Sarah L. โ Supply Chain Lead, CargoLink Logistics
โ โ โ โ โโThe 4mm lock nut and 6mm nylon lock nut we ordered for our container locking systems exceeded spec. 37% cost saving vs. our previous European supplier, and delivery was 11 days early.โ

Raj P. โ Engineering Director, Apex AgriTech
โ โ โ โ โโBoenโs nylon lock nut m10 and nylon nut m8 are now standard on all our harvesters. Zero field failures in 8 months โ thatโs a 100% improvement. Their tech team even helped us with torque specs.โ

โ๏ธ Author: David Chen โ Senior Fastener Engineer, 12+ years in industrial fastening
David leads product quality at Handan Boen Fastener, specializing in nylon insert lock nuts and custom OEM fastening solutions. He has audited over 80 production lines across Asia and Europe, and holds certifications in ISO 9001 and VDA 6.3 process auditing.
Limited-time: 10% off first order + free samples for qualified buyers. Risk-free with 100% money-back guarantee on any non-conforming product.
๐ Or call us: +86 15630072814 (available 09:00โ17:00 CST) ยท โ๏ธ shuan@fastenboen.com / mary@fastenboen.com
๐ Hanguang Industrial Park, Yongnian District, Handan City, Hebei, China ยท Contact Page