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Vermont Gage 361137550 ring gage 7/16"-20 tool steel uncoated finish

Vermont Gage

Vermont Gage 361137550 Ring Gage 7/16"-20 Tool Steel measurement tool

SKU CH-6FYM-6ZXGR

Threaded ring gauge in tool steel with 7/16"-20 UNF threads for go/no-go pitch diameter inspection

  • Go/No-Go verification with 0.4037 in and 0.3995 in pitch diameters
  • Tool steel hardened to RC 60-62 resists wear during repeated checks
  • Adjustable design fits 3T holder for secure 7/16"-20 UNF inspection
  • 2A thread class ensures precise fit for external thread measurement
  • Uncoated finish preserves true dimensions without added layer thickness

Vermont Gage Ring Gage 7/16"-20 UNF

This adjustable thread ring gauge is made from tool steel hardened to RC 60-62 for verifying external threads on manufactured parts. It suits quality-control technicians and machinists who need to confirm 7/16"-20 UNF Class 2A thread conformance. The gauge provides Go and No-Go members for pass-fail inspection.

Sustained inspection reliability

Hardened tool steel construction maintains the Go pitch diameter of 0.4037 in and No-Go pitch diameter of 0.3995 in through repeated measurement cycles. The adjustable design allows periodic recalibration to compensate for wear, preserving decision accuracy during extended production runs. No long-form calibration certificate is included with the unit.

Build quality and daily use

The uncoated finish requires standard corrosion-prevention practices in shop environments. Compatibility with a 3T holder enables secure mounting on inspection stands for hands-free operation. Thread length of 7/16 in matches the nominal size for consistent engagement depth during routine checks.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $197.99
Pricier than about 76% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameVERMONT GAGE

Questions about this item

How much heat does the 361137550 ring gage generate during continuous use?

The tool-steel ring gage has no moving parts or power source, so it produces no measurable heat while checking threads all day.

What holder or handle must I already own to use the 361137550?

The gage fits a standard 3T compatible holder, which is sold separately and required to mount the adjustable go/no-go members.

Will the 361137550 work with older UNF 7/16-20 taps and dies I already have?

Yes — the go member at .4037 in and no-go member at .3995 in follow the 2A class for UNF 7/16-20, matching legacy tooling of the same specification.

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