Vermont Gage
Vermont Gage 911200000 Pin Gauge Minus 1.000 In Black Oxide
Class ZZ minus pin gauge, 1.000 in diameter, 0.0002 in tolerance, RC 60/65 hardness, NIST-traceable certificate, ISO 17025 standard
- Length2.100
- Width1.000
- TypeAngle Finder
- Class ZZ tolerance ensures precise go/no-go inspection
- Black oxide finish resists corrosion for longer service life
- ±0.00020 in tolerance backed by NIST-traceable certificate
- RC 60/65 hardness maintains diameter accuracy under use
- 10 microinch surface finish reduces wear on measured parts
Precision Pin Gauge for Go/No-Go Inspection
The Vermont Gage 911200000 is a Class ZZ No-Go pin gauge made from hardened steel with a black oxide finish. It serves quality-control technicians and machinists who must verify that a bore or hole does not exceed its upper tolerance limit. The gauge carries a Certificate of Accuracy with NIST traceability and meets ISO 17025 calibration standards.
Replaces Worn or Uncertified Pins
Swapping to this gauge is worth it when an existing pin shows surface wear beyond a 10 microinch finish or when its certification has lapsed. The jump is justified for shops that require documented traceability on every inspection pass. It is not for buyers who need a Go (Plus) member to check minimum hole size, or for setups that require a full increment series below .9170 in.
Hardness and Tolerance Define the Limit
The RC 60/65 hardness and .00020 in tolerance set the practical boundary for repeatable contact gauging on steel workpieces. Diameter increments of .0005 in across the .9170 in to 1.0005 in range mean adjacent pins cannot resolve differences smaller than that step. The 2.100 in overall length limits reach in deep or counter-bored features.
Highlights
- Class ZZ tolerance ensures precise go/no-go inspection
- Black oxide finish resists corrosion for longer service life
- ±0.00020 in tolerance backed by NIST-traceable certificate
- RC 60/65 hardness maintains diameter accuracy under use
- 10 microinch surface finish reduces wear on measured parts
Specifications
| Brand | VERMONT GAGE |
|---|---|
| Length | 2.100 |
| Width | 1.000 |
| Type | Angle Finder |
Questions about this item
What hole size does the 1.0000 in pin gauge check for fit?
The Class ZZ No-Go pin gauge has a 1.0000 in diameter with a 0.00020 in tolerance, so it will not enter a hole at or below the low limit of the specification.
How is the pin gauge verified before first use on the shop floor?
It ships with a Certificate of Accuracy showing NIST traceability per ISO 17025; compare the serial number on the certificate to the gauge and record the 10 microinch surface finish reading.
When should the gauge be replaced or recalibrated?
Replace or recalibrate if wear reduces the diameter below the 0.00020 in tolerance band or if the RC 60/65 hardness surface shows pitting that could affect the 10 microinch finish.
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