DIN 985 Nylon Insert Lock Nut Manufacturer | Self-Locking Hex Nut | Metric Prevailing Torque Thin Nut | GFM-WCR System

Brand Name：

LONGZE

Factory：

yes

Samples：

samples are free

MOQ：

1000PCS

Packing：

carton, pallet or customizable

Email：

eric@lzfasteners.com

CONTACT NOW

Download PDF

Email: eric@lzfastenercom

WhatsApp: +86 15350500528

Phone: +86 18830006928 15350500528

Detail

DIN 985 Nylon Insert Lock Nut Manufacturer | Self-Locking Hex Nut

LONGZE high-performance DIN 985 Nylon Insert Lock Nuts (Thin Type) are precision-engineered for compact industrial applications requiring superior vibration resistance. As a core element of the LONGZE GFM-WCR System, these prevailing torque nuts feature a durable non-metallic insert that maintains clamping force in dynamic load environments. Our manufacturing ensures strict adherence to DIN 985 dimensional standards and property classes 5, 8, and 10, supporting lightweight yet secure structural assemblies.

🛡️ LONGZE ENGINEERED FASTENING SYSTEM

Optimal factory-direct assembly for metric high-vibration environments:

🔹 Primary Bolt: ASME B18.2.1 | DIN 931 / 933 | ISO 4014 / 4017
🔹 Standard Washer: ASME B18.22.1 | DIN 125 | ISO 7089
🔹 Hardened Structural Washer: ASTM F436 | DIN 6916 | ISO 7416
🔹 Spring Lock Washer: ASME B18.21.1 | DIN 127 | ISO 10673 (Ref)

LONGZE GLOBAL FASTENERS STANDARDS SYSTEM

Engineering Standard Mapping Layer (ISO ➔ DIN ➔ ASME)

Dimensional Mapping
ISO 10511 (Ref) ➔ DIN 985 ➔ ASME B18.16.6 (NE)

Technical Property Mapping
DIN 985 ➔ ISO 2320 ➔ DIN EN ISO 7042 (Ref)

LONGZE Technical Specification & Performance Lab

1. Technical HUB

Range	M2.5 to M48
Property Class	Class 5, 6, 8, 10
Standards	DIN \| ISO \| Metric
Insert Material	Nylon (PA6/PA66)

2. Surface Lab

Zinc Plated	Cr3+ / Cr6+ / Yellow
Stainless Steel	A2-70 / A4-80 (SS304/316)
Specialty	Dacromet / Geomet

3. QC Lab

Torque Test	DIN 267 Part 15 / ISO 2320
Dimensional	Go/No-Go Gauge Control
Certifications	MTC 3.1 / RoHS Compliance

📊 DIN 985 Dimensional Matrix (Metric Thin Type)

Thread Size (d)	M3	M4	M5	M6	M8	M10	M12	M16	M20	M24
Pitch (P)	0.5	0.7	0.8	1.0	1.25	1.5	1.75	2.0	2.5	3.0
Height (h) max	4.0	5.0	5.0	6.0	8.0	10.0	12.0	16.0	20.0	24.0
Across Flats (s)	5.5	7.0	8.0	10.0	13.0	17.0	19.0	24.0	30.0	36.0

📥 DOWNLOAD OFFICIAL TECHNICAL DATA SHEET (TDS)

LZ-TDS-DIN985-2026-V1.0.pdf

Customized Fastening Solutions & Drawing Support

📐

Send us technical drawings or assembly requirements for optimized locking solutions.

📩 eric@lzfasteners.com

* Professional factory-direct consultation.

🛡️ LONGZE STRATEGIC RISK MANAGEMENT & RESILIENCE

RISK MITIGATION PROTOCOLS

Locking Risk: ISO 2320 first and fifth removal torque verification.
Material Risk: Proof load testing to ensure property class compliance.
Insert Integrity: Temperature stability checks for nylon ring retention.
Compliance Risk: REACH/RoHS declaration for chemical substance safety.

SUPPLY CHAIN RESILIENCE

Component Buffer: Inventory of high-grade PA66 nylon locking rings.
Volume Ready: Automated multi-spindle tapping and insert assembly lines.
Redundancy: Secondary heat treatment partners for hardened lock nuts.
Transparency: Batch-coded traceability from steel coil to assembly node.

🛡️ LONGZE RED-LINE POLICY

Quality Guarantee: Any deviation from the signed TDS or PI is subject to 100% replacement after verification. We guarantee locking performance for every batch.

🚢 LOGISTICS RISK MANAGEMENT

Secure Shipping: Moisture-resistant packaging and photographic evidence of loading provided for every container to ensure cargo arrives intact.

ISO 7040 & DIN 985 Technical FQA

❓ Q: What is the primary difference between ISO 7040 and DIN 985?

A: The main difference is the height. ISO 7040 is a "Style 1" nut with a higher body, offering more thread engagement and generally higher proof load capacity than the DIN 985 "Thin Type".

🔄 Q: Can LONGZE nylon insert nuts be reused multiple times?

A: Yes, per ISO 2320, they maintain prevailing torque for up to 5 reuses. However, for critical safety applications, we recommend replacement once removed.