Pins
Pins are precision mechanical fasteners used to align, locate, or join components in machinery, automotive, construction, and structural assemblies. They come in various types such as dowel pins, taper pins, split pins, and spring pins, each serving different alignment or locking purposes.
| Parameter | Specification |
|---|---|
Product Type |
Pins (Dowel, Spring, Taper, Split types) |
Size Range |
1 mm – 50 mm diameter; length as required |
Material Options |
Stainless Steel, Carbon Steel, Alloy Steel, Brass |
Standards |
DIN, ISO, BS, ASTM |
Surface Finish |
Plain, Zinc Plated, Black Oxide, Phosphate Coated |
Industrial Applications
Pins are widely used in:
- Electrical panels and assemblies: Align and hold components securely in precise locations.
- Automotive industry: Applied in engine and chassis assemblies for accurate positioning.
- Construction and heavy machinery: Provide strong joints and locking mechanisms for moving parts.
- Aerospace and defense: Used in structural assemblies demanding precision alignment and vibration resistance.
- Furniture and hardware fittings: Support alignment and joining in household and industrial use.
Product Description
Pins are versatile fastening elements designed to perform functions such as locating, aligning, and securing components. Unlike threaded fasteners, pins are generally non-threaded and rely on interference fit, spring force, or locking mechanisms to secure parts in place. Common types include dowel pins for precision alignment, taper pins for load-bearing alignment, spring pins (roll pins) for shock absorption, and split pins (cotter pins) for locking assemblies. Their simple yet reliable design makes them indispensable in mechanical engineering, automotive, aerospace, and consumer applications.
Product specifications
- Types of Pins:
- Dowel Pins: Solid cylindrical pins for precise alignment of parts
- Taper Pins: Conical pins used for load transfer and accurate positioning
- Spring Pins (Roll Pins): Hollow cylindrical pins with spring action for vibration absorption
- Split Pins (Cotter Pins): Double-pronged pins used for locking nuts and bolts in place
- Size Range: 1 mm – 50 mm diameter; custom lengths available
- Material Options: Stainless steel (A2/A4), mild steel, carbon steel, alloy steel, brass
- Surface Finish: Plain, zinc plated, phosphate, black oxide, galvanized
- Tolerance Class: High precision (h6 for dowel pins, ISO standard fits available)
- Shear Strength: High, varies by material and type (solid pins provide maximum strength)
- Corrosion Resistance: Excellent in stainless steel; coatings available for added protection
- Operating Temperature: -50°C to +400°C depending on material and coating
- Applications: Alignment, locking, load-bearing, vibration resistance, and safety locking
- Standards/Compliance: DIN 7 (dowel pins), DIN 1 (taper pins), ISO 8752 (spring pins), DIN 94 (split pins), ASTM equivalents
- RoHS/REACH Compliance: Available for stainless and coated variants
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