You can start a replacement ejector pin RFQ without the original drawing by documenting the old pin’s geometry, condition and application. The goal is to separate measured values from assumed nominal values so the supplier knows what is confirmed and what still needs review.
A worn or damaged component can still be a useful reference, but it should not be treated as a perfect master. Mark visible wear, deformation, grinding or breakage and include information about the mating mold whenever possible.
Replacement ejector pin measurement checklist
- Overall length
- Working or shank diameter
- Head diameter and head thickness
- Any step, shoulder or relief diameter
- Step position or retention length
- Tip shape and end condition
- Material, treatment and hardness if known
- Quantity, destination and required date
1. Record the part condition before measuring
Photograph the complete pin and close-ups of the working end, head, step and damaged area. Note whether the part is worn, bent, broken, shortened, polished or previously reworked. If only part of the original component remains, identify which dimensions can still be measured directly.
Use a simple note such as “measured from worn part” or “nominal value from mold record” beside every important dimension. This prevents a worn diameter from being mistaken for the intended new size.
2. Measure the dimensions that control fit
For a straight ejector pin, record the working diameter, overall length, head diameter and head thickness. For a stepped pin, also record the larger retention diameter and the position of each step.
A useful stepped-pin notation is P × D × L – N, where P is the working tip diameter, D is the larger retention diameter, L is overall length and N is the retention length measured from the head-side reference to the step. Include H for head diameter and T for head thickness when they are not controlled by an agreed standard.
See the related guide: How to Specify Custom Ejector Pins for an Accurate RFQ.
3. Show how each measurement was taken
Include clear photographs of the component next to the measuring tool. A caliper photo is useful for orientation, while critical diameters or tolerances may require a more suitable inspection method. Do not imply a tolerance from the number of digits visible on a measuring display.
Keep units consistent. If the mold uses inch-based standards but measurements were taken in millimetres, state both the original standard and the measured units.
4. Add mating and application information
The replacement review is stronger when the supplier can see how the part fits and works. Include any available mold drawing, pin-plate information, mating bore size, old supplier part number, machine or mold reference and a photograph of the installed position.
Also state whether the pin forms a visible product surface, works against a shutoff, carries side load or has another critical function. This helps identify which features require special review before quotation.
5. Identify material and treatment honestly
If the original grade, heat treatment or hardness is known from purchasing records, drawings or certificates, include that reference. If it is unknown, write “unknown — supplier to propose and identify in quotation” rather than guessing.
The quotation should distinguish the confirmed requirement from any proposed equivalent material or treatment.
Copy-and-paste replacement RFQ
Part: Replacement ejector pin
Mold / machine reference: [reference]
Condition: [worn / broken / bent / sample only]
Measured dimensions: [list dimensions and units]
Known nominal dimensions: [drawing or record values]
Material / treatment: [known value or unknown]
Critical fit or function: [describe]
Quantity: [pieces]
Destination: [country and postal code]
Required date: [date]
Files: [photos, drawing, mold record or sample reference]
Request a replacement-part review
Privley Mold Components reviews replacement and drawing-based mold components from drawings, measured dimensions, authorized photos or samples. Submit the secure RFQ form with the information available now. Missing material, hardness, tolerance and compatibility points are confirmed in the written quotation rather than assumed.