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
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.