Precision Locating Components

Precision Dowel Pin Manufacturer & Supplier in India

Premium precision ground dowel pins manufactured via CNC turning & centerless grinding. Supplying Stainless Steel, Hardened, Press Fit, Slip Fit, and Custom CNC Dowel Pins with up to ±0.05mm tolerance for critical alignment assemblies. Bhayandar, Mumbai.

±0.05mm Tolerance
m6 / h6 / p6 Fits
Hardened 58-62 HRC
Export Ready
SS 304 / 316 Options
Custom CNC Profiles
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50+ Years Experience ISO Quality Standards Global Export
Precision Ground Dowel Pins Stainless Steel Dowel Pins Hardened Press Fit Dowel Pins Custom CNC Locating Pins
Precision Ground
Precision Ground
Stainless Steel
Stainless Steel
Hardened Pins
Hardened Pins
Custom CNC Pins
Custom CNC Pins
50+
Years of Experience
±0.05
mm Tolerance Achieved
100%
Centerless Ground
40+
Countries Exported To
Product Overview

What Are Precision Dowel Pins?

Precision Dowel Pins are solid, cylindrical industrial fasteners engineered to precisely align, locate, or join multiple mating components in machinery and tooling assemblies. Because they absorb lateral shear loads rather than tensile loads, they are essential for maintaining absolute positional accuracy in complex mechanical builds.

Depending on your assembly requirements, we manufacture specific tolerances for both Press Fit Dowel Pins (which are slightly oversized for a rigid, permanent hold) and Slip Fit Dowel Pins (which slide in freely for parts requiring regular maintenance or disassembly).

Operating from our established facility in Bhayandar, OM Engineering Works leverages advanced CNC turning centres and high-accuracy centerless grinding to act as a premier Dowel Pin Manufacturer. Whether you require standard Locating Dowel Pins or fully Custom CNC Dowel Pins, we deliver flawless parts tailored to international engineering standards.

Our Premium Dowel Pin Range:

  • Precision Ground Dowel Pins: Super-finished outer diameters to ensure exact interference or clearance fits.
  • Hardened Dowel Pins: Manufactured from alloy steel and heat-treated to 58-62 HRC for exceptional shear strength.
  • Stainless Steel Dowel Pins: Corrosion-resistant components in SS 304 and 316 for food, medical, and marine industries.
  • Custom Dowel Pins: Specially machined pins featuring internal threads (pull-out dowels), stepped diameters, or custom chamfers based entirely on your blueprints. Discover more about our custom engineered capabilities.
Technical Details

Precision Dowel Pins — Specifications

General Specifications

Materials Available Alloy Steel (EN31, SUJ2), SS 304, SS 316, Mild Steel
Manufacturing Process CNC Turning, Centerless Grinding, Heat Treatment
Outer Diameter Range 2 mm to 50 mm
Length Range 5 mm to 200 mm
Tolerance Capability m6 (Press Fit), h6 (Slip Fit), p6 — up to ±0.05mm
Surface Finish Ra 0.2 to Ra 0.8 μm
End Geometry Chamfered, Radiused, Domed, or Flat Ends

Standards & Performance

International Standards DIN 6325, ISO 8734, ASME B18.8.2, DIN 7
Hardness Rating 58 - 62 HRC (for Hardened Dowel Pins)
Custom Configurations Internally Threaded, Stepped Pins, Vented Pins
Certifications Available EN 10204 3.1 Mill Test Certificate, CoC, FAI
Production Volume Prototype (50 pcs) to Mass Production (100,000+ pcs)
Export Packing Anti-rust coated, shrink-wrapped, sea-worthy packaging
Our Expertise

How We Manufacture Precision Dowel Pins

01
Material Sourcing & Prep

We begin with high-quality bar stock—whether alloy steel for Hardened Dowel Pins or premium grades for Stainless Steel Dowel Pins. All materials are checked for chemical composition and structural integrity before machining.

02
CNC Turning & Parting

Using our Traub automatic lathes and CNC machines, the bar stock is cut to exact lengths. Critical end geometries like chamfers, radii, or internal threads (for pull-out pins) are precisely machined at this stage.

03
Thermal Heat Treatment

For pins requiring high shear resistance, the components undergo rigorous heat treatment (case hardening or through-hardening). This ensures a sustained hardness of 58-62 HRC, preventing deformation under high mechanical loads.

04
Precision Centerless Grinding

This is the most critical stage for Precision Ground Dowel Pins. The hardened pins are passed through precision centerless grinders to achieve strict micro-tolerances (m6, p6, h6 fits). This guarantees seamless installation for both Press Fit and Slip Fit applications.

05
Inspection & Quality Control

Every batch of Locating Dowel Pins is inspected using highly calibrated digital micrometers and surface roughness testers to ensure compliance with ISO standards before being coated in anti-rust preventative and packed for export.

Grinding & CNC Equipment

  • Centerless Grinding Machines
  • CNC Turning Centres with live tooling
  • 5× Traub Automatic Lathes (Ø4–Ø42mm)
  • High-accuracy micrometers
  • Surface roughness testers (profilometer)

Quality Control

  • First Article Inspection (FAI) with report
  • In-process grinding dimensional checks
  • Hardness testing verification (HRC)
  • 100% visual inspection before packing
  • EN 10204 3.1 MTCs on all material grades
Material Options

Material Grades for Dowel Pins

Alloy Steel (EN31 / SUJ2)

Properties: Extremely high carbon content allows for superior hardening. Exceptional wear resistance and shear strength for load-bearing alignments.

Best For: Hardened dowel pins, heavy automotive machinery, stamping dies, and industrial tooling fixtures.

Stainless Steel (SS 304 / 316)

Properties: Excellent corrosion and rust resistance. Non-magnetic options available. SS 316 provides superior protection against chlorides and harsh chemicals.

Best For: Marine equipment, food processing machinery, medical devices, and clean-room assemblies, as well as specialized pipe and tube fittings setups.

Common Questions

Precision Dowel Pins — FAQs

Press Fit Dowel Pins are manufactured with a slightly oversized tolerance (usually m6 or p6) compared to the receiving hole. They must be pressed or driven in, creating a permanent, rigid connection. Slip Fit Dowel Pins are machined with a slightly undersized or exact tolerance (usually h6) allowing them to slide in and out of the hole freely. They are ideal for locating parts in assemblies that need regular disassembly.

You should choose Hardened Dowel Pins (made from alloy steels like EN31) when your assembly involves heavy loads, metal stamping dies, or high-vibration environments where maximum shear strength is critical. Choose Stainless Steel Dowel Pins when the primary concern is preventing rust and corrosion, such as in marine engineering, food and beverage processing, or medical manufacturing.

Yes, as a specialized Dowel Pin Supplier, we manufacture Custom CNC Dowel Pins to your exact CAD drawings. We can produce internally threaded dowel pins (pull-out pins used for blind holes), stepped pins, vented pins (to allow air pressure to escape during insertion), and pins with custom radii or chamfer angles.

We cater to both low-volume B2B needs and mass production. Our minimum order quantity typically starts at 50 to 100 pieces for standard sizes, and we are happy to manufacture custom prototype runs before you commit to large volume orders.

Absolutely. As a dedicated manufacturer looking to expand our global presence, OM Engineering Works produces export-ready Precision Ground Dowel Pins. We package securely with anti-rust preventative to ensure your components arrive globally in perfect condition, maintaining tolerances regardless of the destination.
Related Capabilities

Explore Our CNC Machining Services

Precision Turned Components

CNC turned shafts, sleeves, bushings, and sealing components manufactured to tight tolerance for OEM industries.

Traub Machining Job Work

High-volume automatic lathe production for industrial fasteners, pins, and hydraulic components.

Custom Engineered CNC Components

Fully custom machined components manufactured from drawing or sample with full dimensional reporting.

Ready to Order Precision Dowel Pins?

Share your blueprint or specification — receive a detailed quote. Expert manufacturer of Press Fit, Slip Fit, and Custom Dowel Pins. Export-ready from Mumbai.

Upload Drawing WhatsApp Quote +91 9324078101

Contact Info

24/A, Shreenath IND Estate, Navghar Rd, Bhayandar(E), 401105

+91 9324078101

omeprecisions@gmail.com

Mon - Sat: 09:00 AM - 09:00 PM

Our Services

Precision Turned Components Pipe & Tube Fittings Custom Components Rapid Prototyping & Small-Batch Traub Machining Job Work

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Why Choose Us

50+ years in precision Traub machining. 5 automatic lathes, ±0.05mm tolerance, 24/7 production.

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Global Export Experience

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