0.5-26mm Pin Gauge 1Pc/5Pcs GCr15 Bearing Steel Plug Gauge for Hole Inspection Calibration High Precision Customizable

For pin gauge sets, click the image below.

Product Overview

This professional pin gauge (plug gauge) is a high-precision cylindrical measuring tool, widely used for hole size inspection, hole distance measurement, and dimensional calibration in precision machining, mold making, and electronic component manufacturing. Made of premium GCr15 bearing steel with quenching heat treatment and fine grinding, it features excellent hardness, wear resistance, and stable dimensional accuracy. The accuracy can reach up to ±0.001mm/0.002mm, with specifications ranging from 0.05mm to 100mm, suitable for various industrial precision measurement needs.

Product Features & Specifications

1,Material: High-quality GCr15 bearing steel, quenched and heat treated, hardness HRC 58-62
Accuracy: ±0.001mm/0.002mm,meets industrial metrology standards
2,Roundness: ≤0.5μm, smooth surface finish Ra ≤0.2μm
3,Length: Standard 50mm, with chamfered edge for easy insertion
4,Surface treatment: Anti-rust coating, durable and long service life
5,Clear laser marking with diameter size for easy identification
6,Complete specifications: 0.05mm-100mm with multiple step intervals available,(If the size you need is not available here, please contact us)
7,Ideal for hole inspection, calibration, and quality control in machining and mold making

Custom Pin Gauge –Made to Your Specs

If the specifications you need are not available in this listing, please contact us and we will provide them for you.
Customization Options Include:
1.Micron-grade (3 decimal places, e.g. 7.883mm)
2.Imperial pin gauges
3.Extended/shortened versions
4.Sets with any spacing
5.Special shapes (custom per your drawing)
6.Material options:Gcr15, Ceramic Pin Gauges, Cemented Carbide (Tungsten Steel)
Standard customization: 3-5 working days
Complex customization: 5-12 working days.

Our Factory Gauge Customization Instructions

Customizable Types: Pin gauges, block gauges, go/no-go gauges, ring gauges, thread gauges, step gauges, calibration blocks
Materials: HSS, industrial ceramic, tungsten carbide (alloy steel) available.
Precision: ±0.5μm, ±1μm, ±2μm
Lead Time: 3–5 days (standard), 5–12 days (complex)

Operation & Cautions

·Select the corresponding pin gauge according to the hole diameter to be measured.
·Insert the pin gauge gently into the hole; if it fits smoothly without excessive force, the hole size matches the gauge diameter.
·Keep the gauge surface clean and dry during use; avoid contact with dirt or oil.
·After use, wipe the pin gauge clean and store it in a dry, dust-free environment to prevent rust.
·Do not drop, knock or apply excessive force to the gauge to avoid deformation and accuracy deviation.
·Do not use the pin gauge to measure rough or burr workpieces to prevent scratching the surface.
·Regularly check the calibration status of the pin gauge to ensure long-term measurement accuracy.

Dear Customer,
If you have any issues, please message our service team. We guarantee a 100% solution for you.
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