Vermont Gage 901200500 .251-.500in Class ZZ Black Guard Steel Pin Gage Set
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The Vermont Gage 901200500 is a Class ZZ pin gage set covering the .2510"–.5000" range in .001" increments, featuring Black Guard corrosion-resistant coating on hardened steel pins. Class ZZ tolerance pins are manufactured to ±.0002" on plus members and -.0002"/-.0004" on minus members per ASME B89.1.5 standards, making this set suitable for go/no-go inspection of holes, slots, and bores in production environments. The set includes 250 individual pins seated in a labeled red foam tray within a gray latching plastic case with rust-inhibiting lid liner, and ships with a Vermont Gage Certification of Accuracy traceable to NIST. This item is new — other condition, meaning it is unused but may show minor cosmetic handling marks on packaging; the Certification of Accuracy card visible in the photos confirms factory inspection with a manufacture date readable on the certificate.
Product Specifications
| Manufacturer | Vermont Gage |
| Part Number | 901200500 |
| Range | .2510 in – .5000 in |
| Increment | .0010 in |
| Number of Pins | 250 |
| Tolerance Class | Class ZZ |
| Plus Member Tolerance | +.0000 / +.0002 in |
| Minus Member Tolerance | -.0002 / -.0004 in |
| Coating / Finish | Black Guard corrosion-resistant coating |
| Pin Material | Hardened steel |
| Standard | ASME B89.1.5 |
| Calibration | NIST-traceable Certification of Accuracy included |
| Case Type | Gray latching plastic case w/ red foam tray |
| Condition | New — other (unused) |