Locating Pins & Bushings
584 precision locating components for fixture positioning — from standard cylindrical dowel pins to specialized welding fixture pins. Available in DIN, JIS, and NAAMS standards with materials including SKD11, SUJ2, and SUS304.
Product Sub-Categories
Locating Pins
360 precision dowel pins in cylindrical, diamond, step, and spring configurations. SKD11, SUJ2, SUS304 materials. h7/g6/m6 tolerance grades.
Browse 360 Products
Height Adjusting Pins
69 height adjusting pins and rest pads for workpiece elevation control. Threaded, spring, and fixed pad types.
Browse 69 Products
Jig & Drill Bushings
79 jig and drill bushings per DIN 172/179. Fixed, renewable, and liner types for precision hole guidance.
Browse 79 Products
Locating Pins for Welding
76 welding fixture locating pins with optional anti-spatter coatings (TiN, DLC, ceramic). NAAMS compliant.
Browse 76 ProductsLocating Pin Types at a Glance
Each sub-category serves a different positioning function. Use this comparison to identify which type matches your fixture requirement:
| Feature | Locating Pins | Height Adjusting Pins | Jig & Drill Bushings | Welding Pins |
|---|---|---|---|---|
| Primary Function | X-Y positioning of workpiece | Z-axis height control | Drill/reamer guidance | Panel positioning in weld fixtures |
| Typical Accuracy | h7, g6, m6 (±0.005–0.02 mm) | ±0.1 mm (adjustable range) | H7/h6 bore guidance | ±0.05 mm (NAAMS spec) |
| Key Material | SKD11, SUJ2, SUS304 | Carbon steel, hardened tips | Case-hardened steel (60+ HRC) | Tool steel + anti-spatter coating |
| Common Standards | DIN, JIS, MISUMI | MISUMI proprietary | DIN 172, DIN 179 | NAAMS, proprietary |
| Typical Application | CNC fixtures, inspection gauges | Die adjustment, support leveling | Multi-hole drilling jigs | Robotic & manual welding cells |
| Products Available | 360 | 69 | 79 | 76 |
Learn more: See How to Select the Right Locating Pin Type — Dowel, Adjusting, Bushing, or Welding for a full decision framework.
Why Material Choice Matters for Locating Pins
The material of a locating pin directly determines its wear resistance, corrosion behavior, and achievable positioning accuracy over thousands of insertion cycles:
- SKD11 (D2 equivalent, 58-62 HRC) — High-chrome tool steel offering the best wear resistance for high-volume production. Resists galling and maintains diameter tolerance over millions of cycles. Ideal for CNC fixtures and inspection gauges.
- SUJ2 (52100 bearing steel, 60-64 HRC) — Bearing-grade steel with excellent surface finish and roundness. Often used where rotational precision matters (e.g., indexing fixtures).
- SUS304 (304 stainless, ~187 HB) — Corrosion-resistant but softer. Use only when the fixture operates in wet/chemical environments where rust would compromise positioning accuracy.
Rule of thumb: For dry-environment fixtures cycling >10,000 parts, use SKD11. For corrosive environments, accept the hardness trade-off and use SUS304 with a shorter replacement interval.
Deep dive: Read Why Material Choice Matters for Locating Pins — SKD11 vs SUJ2 vs SUS304 for hardness and wear rate data.
About Locating Pins & Bushings
Locating pins and bushings are the primary positioning elements in any precision fixture. They establish the datum reference that all other fixture components build upon — without accurate location, clamping force and support are meaningless.
Our 584-product range covers the complete spectrum from standard cylindrical dowels (φ2–φ25 mm) to specialized welding fixture pins with anti-spatter coatings. All pins are manufactured to published tolerance grades with full dimensional certification.
Learn more: Understand how standards differ in What Are the Key Differences Between DIN, JIS, and NAAMS Locating Pin Standards?
Engineering Resources
How to Select the Right Locating Pin Type — Dowel, Adjusting, Bushing, or Welding
Decision framework for matching your fixture scenario to the correct locating component sub-category.
Why Material Choice Matters for Locating Pins — SKD11 vs SUJ2 vs SUS304
Deep comparison of wear resistance, corrosion behavior, and cost across the three main locating pin materials.
What Are the Key Differences Between DIN, JIS, and NAAMS Locating Pin Standards?
Side-by-side comparison of dimensional standards, tolerance conventions, and regional adoption patterns.
Application Scenarios
CNC Machining Fixture Setup
Pain point: Workpiece shifts during heavy cutting operations cause dimensional drift and tool breakage, requiring frequent recalibration.
Why it fits: Press-fit locating pins (m6 tolerance) establish permanent datum points with ±0.005 mm positional accuracy. Diamond pins eliminate over-constraint in 2-pin locating systems.
Multi-Station Assembly Line
Pain point: Parts must transfer between 5+ fixture stations with consistent positioning — any station-to-station variation compounds into assembly defects.
Why it fits: Standardized locating pin + bushing pairs (h7/H7 clearance fit) ensure identical datum references across all stations. Jig bushings add hole-drilling repeatability at each station.
Welding Fixture Maintenance
Pain point: Welding spatter seizes onto locating pins, requiring weekly replacement and 30+ minutes downtime per pin change.
Why it fits: DLC-coated welding pins resist spatter adhesion and last 5-10× longer. Anti-spatter coatings reduce replacement frequency from weekly to monthly.
Frequently Asked Questions
What is the difference between locating pins, height adjusting pins, and drill bushings?+
Which locating pin standard should I choose — DIN, JIS, or NAAMS?+
What materials are locating pins made from, and when does material choice matter?+
Do you offer locating pins in both metric and imperial sizes?+
How many locating pins are typically needed to locate a workpiece?+
Do I always need a bushing with my locating pin?+
Need Locating Components?
Send your fixture drawing or specify the pin diameter, length, material, and tolerance grade. We'll provide a quote within 24 hours.