DIN7343 Coiled Spring Pin Spiral Lock Fastener Pin

Manufactured strictly according to German industrial standards, this high-precision multi-layer spiral rolled elastic fastener delivers reliable mechanical locking performance for heavy-duty equipment. Adopting a continuous multi-layer winding structure, it provides 360-degree uniform elastic tension after installation, completely filling pin hole gaps to resist long-term mechanical vibration, repeated impact and dynamic load changes. With excellent mechanical stability and fatigue resistance, the fastener avoids loosening, deformation or breakage under high-frequency working conditions, gaining wide recognition in global mechanical assembly fields. Ningbo Gangtong Zheli Fasteners provides comprehensive customized solutions including different materials, hardness grades, sizes and surface treatments to meet various industrial application requirements for DIN7343 Coiled Spring Pin.

Material Grade & Surface Treatment Introduction

Covering general machinery, outdoor equipment, high-corrosion environment and marine engineering scenarios, we supply complete standardized material grades for this industrial elastic fastener. All raw materials are strictly screened and tested to ensure stable elasticity, hardness and toughness of each batch of finished pins. Customers can freely match materials and surface finishes according to their equipment working environment, load requirements and budget standards, realizing targeted customization for coiled spring pin products.

Material Type	Exact Grade	Hardness & Performance	Application & Custom Surface Treatment
Carbon Steel	65Mn / 60Si2Mn	High elasticity, high tensile strength, good wear resistance, strong toughness, not easy to brittle fracture	Widely used for general machinery, agricultural equipment, conveyor systems, engineering machinery. Available in zinc plated (blue white/yellow), black oxide, oil dipping anti-rust treatment
Stainless Steel	SS304 / SS316	Excellent oxidation resistance, rust resistance and chemical corrosion resistance, stable performance in humid environment	Suitable for outdoor machinery, marine equipment, food machinery, chemical industry and humid working conditions. Support passivation, polishing and anti-fingerprint treatment

All surface treatments can be customized according to customer standards, including environmental protection plating, heavy zinc plating, matte finish and bright finish. These professional surface processing technologies ensure excellent appearance quality and long-term anti-rust effect, fully meeting the export standards of global markets for DIN7343 spiral spring pin.

Standard Product Specifications & Custom Parameters

Produced in full compliance with German DIN standard dimensional tolerances, each finished fastener features precise hole matching, smooth surface and no burrs. The compact and uniform overall structure ensures zero jamming during assembly. In addition to complete standard sizes, we also support fully customized non-standard specifications to meet special assembly and mechanical design needs of DIN7343 coiled spring pin products.

Item	Detailed Specification
Product Standard	DIN7343 Industrial Standard
Official Name	Coiled Spring Pin / Multi-layer Spiral Elastic Cylindrical Pin
Standard Size Range	Diameter 1.5mm - 20mm, length 4mm - 100mm
Structural Feature	Multi-layer spiral rolling structure, uniform elastic force, low stress concentration, strong compression recovery
Main Function	Mechanical positioning, component locking, vibration resistance, anti-loosening, impact buffering
Customizable Content	Special diameter, special length, different hardness, customized surface treatment, laser logo, customized packaging
Processing Quality	Smooth surface, no burrs, precise tolerance, high assembly compatibility

Product Performance Advantages & Industry Comparison

Compared with traditional slotted spring pins, this elastic fastener has obvious technical advantages. Its unique multi-layer spiral structure can disperse pressure evenly in all directions, effectively solving the problems of unilateral stress, easy deformation and poor vibration resistance of ordinary spring pins. During repeated extrusion, assembly and disassembly, the coiled elastic structure can quickly rebound and maintain stable locking force, greatly improving the overall safety and stability of mechanical equipment for DIN7343 coiled spring pin applications.

Performance Dimension	DIN7343 Coiled Spring Pin	Ordinary Slotted Spring Pin
Elastic Force Distribution	Omnidirectional uniform elasticity, balanced stress	Single-side opening, uneven stress concentration
Vibration Resistance	Superior, suitable for long-term high vibration working conditions	General, easy to loose under continuous vibration
Fatigue Resistance	High fatigue resistance, long service life	Easy to fatigue and deform after repeated use
Assembly Stability	Close fitting, no gap displacement	Easy gap generation and position deviation
Applicable Load	Medium and heavy load mechanical equipment	Light load ordinary mechanical assembly

For automated machinery, hydraulic systems and engineering equipment that require long-term stable operation, professional engineers always prioritize this high-stability locking fastener. With superior vibration resistance and fatigue resistance, DIN7343 spiral coiled pin stands out among various elastic fasteners for heavy industrial equipment.

Wide Industrial Application Scenarios

Featuring stable quality, strong adaptability and excellent anti-vibration performance, this industrial elastic fastener is widely used in almost all mechanical manufacturing and mechanical maintenance industries. It is commonly applied for precise positioning and anti-loosening connection of mechanical components, effectively ensuring the consistency and safety of equipment operation for DIN7343 coiled spring pin installation scenarios.

Typical application fields include agricultural machinery equipment, logistics conveyor systems, construction engineering machinery, automobile manufacturing and auto parts, hydraulic and pneumatic components, automated production equipment, precision instrumentation, food processing machinery, environmental protection equipment and general industrial assembly. According to different usage environments, we recommend zinc-plated carbon steel pins for conventional indoor use and corrosion-resistant stainless steel DIN7343 spring pins for outdoor, humid and corrosive environments.

Professional Packaging, Inspection & Shipment Standard

To ensure every batch of industrial fasteners arrives at the customer’s warehouse in perfect condition, we implement complete standardized export packaging and strict pre-shipment inspection procedures. All packaging links are refined to avoid scratches, deformation, rust and quantity errors during long-distance sea transportation and land logistics, providing full protection for DIN7343 coiled spring pin bulk shipments.

Coiled spring pin finished products are strictly sorted by size and specification for inner packaging processing. Each specification is independently sealed in thickened waterproof and dustproof plastic bags. High-efficiency desiccants are added inside each bag to absorb moisture and prevent oxidation and rust during storage and international transportation. The bag sealing process ensures no air and water vapor penetration.

For outer packaging processing, the well-sealed plastic bags are placed into high-hardness reinforced export cartons. Shockproof foam and buffer paper are added inside the cartons to prevent product collision and extrusion deformation. All cartons are sealed with multi-layer waterproof adhesive tape to achieve fully waterproof and dustproof effect for packaged DIN7343 pin products.

Cartons are arranged neatly and fixed firmly on standard export wooden pallets for unified pallet packaging and shipping. The whole pallet is wrapped with stretch film to prevent carton displacement, scattering and moisture ingress. We support customized customer exclusive labels, batch number marks, shipping marks and outer box printing according to buyer requirements. Before container loading, our QC team will conduct full inspection to ensure 100% qualified delivery of DIN7343 elastic pin orders.

Advantages of Choosing Ningbo Gangtong Zheli Fasteners

Ningbo Gangtong Zheli Fasteners is a professional manufacturer specialized in the R&D, production and customization of standard industrial fasteners. We have complete production lines, advanced precision processing equipment and standardized quality inspection systems to strictly control every production process from raw material incoming inspection to finished product testing, focusing on high-quality DIN7343 coiled spring pin series manufacturing.

All our DIN standard spring pins feature stable hardness, uniform elasticity, high dimensional accuracy and consistent batch quality. We have rich experience in supporting global customers’ customized projects, whether standard spot bulk orders or special non-standard customized products. We can provide professional material selection suggestions and cost-effective solutions according to customer equipment usage scenarios, helping clients purchase high-quality spring pin products with lower costs.

FAQ

Q1: What material grades can you supply for DIN7343 coiled spring pins?

A1: We provide industrial mainstream grades including carbon steel 65Mn, 60Si2Mn and stainless steel SS304, SS316. Zinc-plated carbon steel products are the best-selling and most cost-effective model for general machinery, while stainless steel versions are suitable for anti-corrosion and outdoor working conditions of DIN7343 coiled spring pin.

Q2: Can you produce non-standard custom sizes?

A2: Yes. Besides full-range standard DIN7343 sizes, we can customize special diameter, length, hardness and special structural fasteners according to customer drawings or samples to meet personalized coiled spring pin customization needs.

Q3: What is your MOQ and delivery time?

A3: Conventional standard sizes have sufficient stock and support fast delivery within 3-7 days. Customized products will be arranged production according to order quantity. We support small trial orders and large bulk wholesale orders forDIN7343 spring pin products.

Q4: Can you provide official inspection documents?

A4: Sure. We can provide material test reports, heat treatment reports and factory quality inspection certificates to support customer quality inspection and customs clearance for DIN7343 coiled spring pin shipments.

Q5: Do you support personalized packaging and logo customization?

A5: Yes. We support customized private labels, shipping marks, outer box printing and exclusive packaging solutions to meet brand customer requirements for customized spring pin orders.