Ex-stock Mumbai · Pan-India Delivery
Dowel Pins — Manufacturer & Supplier in Mumbai
Precision-ground solid, taper, spring, spiral, threaded and grooved dowel pins stocked ex-Mumbai. ISO 8734, ISO 2339 & DIN 1470 grades. Custom diameters and lengths available. Pan-India delivery.
ISO 8734 • IS 6669 • DIN 6325
Solid Dowel Pin
Ex-stock Mumbai · Custom sizes: 5–7 days
Precision ground to h6 or m6 tolerance, solid dowel pins are the industry standard for accurate component location in jigs, fixtures, moulds, and machine assemblies. The ground finish (Ra ≤0.4 µm) ensures a consistent press fit, eliminating play and maintaining alignment under repeated assembly and disassembly cycles.
| Standards | ISO 8734, IS 6669, DIN 6325 |
|---|---|
| Material | Carbon Steel (hardened), SS 304, SS 316 |
| Diameter Range | Ø2 mm – Ø50 mm |
| Length Range | 6 mm – 200 mm |
| Tolerance | h6 (slip fit) / m6 (press fit) |
| Finish | Ground, Ra ≤0.4 µm |
Common Applications
- Jigs & Fixtures
- Press Tools & Dies
- Injection Moulds
- Machine Assembly
- Automotive Tooling
ISO 2339 • DIN 1 • IS 549
Taper Pin
Ex-stock Mumbai · Custom sizes: 5–7 days
Taper pins have a uniform 1:50 taper that locks the pin firmly into the bore under load, preventing axial movement without a separate fastener. Widely used for attaching levers, handwheels, and collars to shafts in power transmission assemblies. The tapered geometry allows quick removal with a drift punch.
| Standards | ISO 2339, DIN 1, IS 549 |
|---|---|
| Taper Ratio | 1:50 |
| Material | Carbon Steel, Alloy Steel |
| Nominal Diameter | Ø1 mm – Ø50 mm |
| Length Range | 10 mm – 200 mm |
| Finish | Bright / Self-colour |
Common Applications
- Shaft-Hub Connections
- Lever & Handwheel Attachment
- Power Transmission
- Agricultural Machinery
- Gearboxes
ISO 8752 • DIN 1481
Spring Dowel Pin (Slotted)
Ex-stock Mumbai · Custom sizes: 5–7 days
Heavy-duty slotted spring pins compress radially on insertion, generating a continuous outward spring force that retains the pin securely without adhesives or special tooling. The slotted design also distributes stress along the slot edge, giving the pin superior fatigue resistance compared to solid pins in dynamic loading applications.
| Standards | ISO 8752, DIN 1481 |
|---|---|
| Type | Heavy duty slotted (single coil) |
| Material | Carbon Steel, SS 304 |
| Diameter Range | Ø1.5 mm – Ø20 mm |
| Length Range | 4 mm – 100 mm |
| Chamfer | Both ends |
Common Applications
- Sheet Metal Assemblies
- Hinges & Pivots
- Electronics Enclosures
- Plastic Moulds
- Agricultural Equipment
ISO 8750 • DIN 7344
Spiral Dowel Pin
Ex-stock Mumbai · Custom sizes: 5–7 days
Spiral pins are rolled from strip steel into a multi-layer coil, giving them greater shear strength and energy-absorbing capacity than single-coil slotted pins of the same diameter. The spiral construction spreads insertion force evenly around the bore, reducing the risk of bore distortion in thin-walled or cast housings. Ideal for applications involving shock loads and vibration.
| Standards | ISO 8750, DIN 7344 |
|---|---|
| Type | Multi-layer spiral coil |
| Material | Carbon Steel, SS 304 |
| Diameter Range | Ø2 mm – Ø20 mm |
| Length Range | 6 mm – 100 mm |
| Strength | Light / Standard / Heavy |
Common Applications
- Shock-load Assemblies
- Automotive Components
- Construction Equipment
- Thin-wall Cast Housings
- High-vibration Environments
ISO 8733 • DIN 7979
Internal Threaded Dowel Pin
Ex-stock Mumbai · Custom sizes: 5–7 days
These dowel pins feature an internal thread at one or both ends, allowing extraction with a threaded puller even when the pin is flush or below the component surface. This makes them essential in assemblies that require frequent disassembly or where hammering is not permissible — such as precision tooling, aerospace structures, and inspection fixtures.
| Standards | ISO 8733, DIN 7979 |
|---|---|
| Thread | M4 – M16 internal |
| Material | Carbon Steel (hardened), SS 304 |
| Diameter Range | Ø4 mm – Ø20 mm |
| Length Range | 8 mm – 100 mm |
| Tolerance | m6 |
Common Applications
- Precision Tooling
- Aerospace Structures
- Inspection Fixtures
- Flush-mounted Assemblies
- Frequently Serviced Equipment
DIN 1470 • DIN 1471 • DIN 1472
Grooved Dowel Pin
Ex-stock Mumbai · Custom sizes: 5–7 days
Grooved pins have three evenly spaced longitudinal grooves rolled along the shaft, causing the material to displace outward on insertion and form a secure interference fit without special bore preparation. Available in full-length (DIN 1470), half-length (DIN 1471), and pilot-end (DIN 1472) groove configurations. The grooves also retain lubricants, making them suitable for pivot pin applications.
| Standards | DIN 1470, DIN 1471, DIN 1472 |
|---|---|
| Groove Type | Full-length / Half-length / Pilot-end |
| Material | Carbon Steel, Alloy Steel |
| Diameter Range | Ø3 mm – Ø20 mm |
| Length Range | 8 mm – 100 mm |
| Finish | Bright / Black oxide |
Common Applications
- Pivot Pins
- Sheet Metal Joining
- Wooden Panel Alignment
- Furniture Fittings
- General Engineering
Common Questions
Dowel Pin FAQ
What is a dowel pin used for?
Dowel pins are precision cylindrical fasteners used to accurately locate and align two or more components. They ensure repeatability in jigs, fixtures, dies, moulds, and machine assemblies where precise alignment is critical.
What is the difference between solid and spring dowel pins?
Solid dowel pins are ground to a tight h6/m6 tolerance and require a precisely reamed bore for a press fit — they offer maximum rigidity and locational accuracy. Spring (slotted) dowel pins are hollow with a slot, allowing radial compression on insertion and self-retention without precise bore tolerances. Spring pins also absorb shock and vibration better than solid pins.
What materials are available?
We stock dowel pins in Carbon Steel (bright and hardened), Alloy Steel, Stainless Steel 304, and Stainless Steel 316. Other grades can be sourced on request for specialised applications such as food processing or marine environments.
Do you supply custom size dowel pins?
Yes. We supply non-standard diameters and lengths on request. Contact us with your drawing or specifications and we will confirm availability and lead time. Minimum order quantities apply for custom sizes.
What is the typical lead time for dowel pin orders?
Standard sizes are available ex-stock from our Mumbai warehouse and dispatched within 1–3 working days. Custom or non-standard sizes require 7–15 working days depending on quantity and grade.
Which dowel pin is best for vibration-heavy applications?
Spiral dowel pins (ISO 8750) are best suited for shock and vibration environments. Their multi-layer coil construction absorbs impact energy and distributes stress more evenly than slotted spring pins, making them ideal for heavy equipment, automotive, and construction machinery applications.
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