DIN 7343

Spiral Dowel Pins (DIN 7343 / ISO 8750 Coiled Spring Pins)

Coiled Spring Pins

Coiled spiral dowel pins made from rolled spring steel sheets, offering uniform strength, elasticity, and equal distribution of shock loads across the pin surface.

Materials Available: Carbon Spring Steel, Stainless Steel

Standard Size Range: 1.5 mm --- 16 mm (Diameter)

Standard Finishes: Plain / Oiled, Zinc Plating

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DIN 7343 Spiral Dowel Pins Overview & Technical Specs

Spiral dowel pins consist of 2.25 turns of coiled spring steel. When pressed into a hole, the coil contracts radially, creating a secure hold that dampens vibration and compensates for misalignment.

Coiled Spring Pins Features & 360° Shock Absorption Benefits

Uniform 360-degree radial tension.
Absorbs shock loads without cracking.
Wider diameter tolerances allowed in drilling.
Prevents stress concentration in the host material.
Meets DIN 7343 standards.

Automotive & Heavy Equipment Fastening Applications

Our Spiral Dowel Pins components are used across multiple sectors for critical positioning assemblies:

Gear-to-shaft pinning
Automotive hinge connections
Pneumatic cylinder attachments
Heavy machinery hinges

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Related Coiled Pins & Spring Dowel Sleeves

Spiral Dowel Pins (DIN 7343) FAQs

Why choose spiral pins over slotted pins- +

CIRCLIPS

WASHERS

DOWEL PINS

VALVE COMPONENTS