Ejector Pins for Injection Molding
Precision Ejection. Zero Downtime. Same-Day Quotes.
Precision Ejector Pins Built for Your Toughest Molds
Ejector pins are the workhorse of every injection mold. They push the finished part out of the cavity after each cycle. A pin that bends, galls, or wears prematurely means stuck parts, damaged cavities, and stopped production lines.
At Tooling Components, we supply precision ejector pins manufactured to strict tolerances from premium tool steels. Whether you need standard through-hard pins for general-purpose molds or nitrided H13 pins for high-volume production, we have the inventory and technical expertise to deliver the right pin the first time.
Types of Ejector Pins We Supply
| Pin Type | Material | Hardness | Best For |
|---|---|---|---|
| Through-Hard Ejector Pins | H13 Tool Steel | 60-62 HRC | General-purpose injection molding, standard cycle times |
| Nitrided H13 Ejector Pins | H13 + Surface Nitriding | 65-70 HRC (surface) | High-volume production, abrasive resins, reduced galling |
| Stainless Steel Pins (420 SS) | 420 Stainless Steel | 50-55 HRC | Medical, food-grade, and corrosive environments (PVC) |
| M2 High-Speed Steel Pins | M2 HSS | 62-65 HRC | Glass-filled and highly abrasive materials |
| Step Ejector Pins | H13 Tool Steel | 60-62 HRC | Thin-wall parts, ribs, and tight-clearance ejection |
| Flat Ejector Pins | H13 Tool Steel | 60-62 HRC | Ejecting from ribs, bosses, or flat surfaces |
| Return Pins | H13 Tool Steel | 60-62 HRC | Returning ejector plate to starting position each cycle |
Materials & Specifications
Every ejector pin we supply meets or exceeds industry standards for hardness, straightness, and surface finish. Our pins are precision-ground to ensure proper clearance in the ejector plate and smooth operation through millions of cycles.
Standard Specifications
- Diameters: 1.0mm to 25mm (metric), 1/16" to 1" (inch)
- Lengths: Up to 500mm (20") standard, longer available
- Tolerance: h6 ground (standard), h5 available on request
- Surface Finish: Ra 0.4 microns or better
- Hardness: 60-62 HRC core, up to 70 HRC nitrided surface
- Standards: DIN 1530, JIS B 5108, MISUMI equivalent
How to Select the Right Pin
Choosing the wrong ejector pin costs more than the pin itself. Consider:
- Resin type: Glass-filled materials require M2 or nitrided H13 for abrasion resistance
- Operating temperature: High-temp resins need H13 or M2, not standard steel
- Part geometry: Thin walls and ribs need step or flat pins to distribute ejection force
- Cycle volume: High-volume molds benefit from nitrided surfaces to extend pin life
- Environment: Corrosive materials (PVC) or medical/food require 420 stainless
- Ejection force: Calculate total force and distribute across multiple pins to prevent bending
Not sure which pin you need? Our team has 38+ years of mold component expertise. Send us your drawings or specifications and we will match the right pin to your application.
Industries We Serve
Automotive
High-volume production molds requiring nitrided pins for millions of cycles
Medical
Stainless 420 pins for clean-room molding and FDA-compliant applications
Consumer Products
Standard H13 pins for general-purpose injection molding
Packaging
High-speed cycle molds with wear-resistant pin surfaces
Why Tooling Components?
38+ Years Experience
Family-owned since 1987. We know mold components inside and out.
Same-Day Quotes
Submit your drawings or BOM and get a response the same day.
15,000+ SKUs In Stock
One of the largest mold and die component inventories in the industry.
Call us at 814-438-7657 or schedule a meeting below.