We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Vermont Gage 9/16"-18 UNF Go/No-Go ring gage, tool steel, uncoated finish

Vermont Gage

Vermont Gage 361144550 9/16"-18 UNF Go/No-Go Ring Gage Tool Steel

SKU CH-9JMW-051B2

Go/No-Go ring gage verifies 9/16"-18 UNF threads with .525/.5205 in pitch diameters in hardened tool steel RC 60-62

  • Go/No-Go inspection for 9/16"-18 UNF threads
  • Tool steel construction hardened to RC 60-62
  • Adjustable design fits compatible 4T holder
  • Go member pitch diameter .525 in, No-Go .5205 in
  • Uncoated finish for direct thread verification

Vermont Gage 361144550 9/16"-18 UNF Ring Gage

The Vermont Gage 361144550 is a Go/No-Go ring gage designed for verifying external threads on a 9/16"-18 UNF 2A size. Machined from tool steel hardened to RC 60-62, it provides the wear resistance required for repeated inspection tasks. Quality-control technicians and machinists use this adjustable gage to confirm pitch diameters of .525 in on the Go member and .5205 in on the No-Go member.

Installation and common issues

The gage arrives uncoated and ready for use; no assembly or calibration is required before the first check. Thread the Go member onto the part by hand — it should pass freely — then confirm the No-Go member stops within three turns. A frequent error is applying excessive torque, which can damage both the gage threads and the workpiece.

What to verify before ordering

Confirm the component you are inspecting is cut to a 9/16"-18 UNF 2A thread specification. Ensure your inspection process accepts a long-form calibration certificate absence and an uncoated finish. The adjustable design fits a compatible 4T holder if your workflow requires mounted gaging. This gage does not suit metric threads or other UNF sizes.

How it compares

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

Price $270.99
Pricier than about 81% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameVERMONT GAGE

Questions about this item

How do I confirm the 9/16"-18 UNF ring gage is within tolerance after setup?

Verify the Go member engages the thread fully and the No-Go member stops within three turns; the Go pitch diameter is .525 in and the No-Go pitch diameter is .5205 in for a 2A class fit.

What comes with the Vermont Gage 361144550 and what must be purchased separately?

The box contains the adjustable Go/No-Go ring gage made of tool steel hardened to RC 60-62 with an uncoated finish; a compatible size 4T holder and a long-form calibration certificate are not included.

Which version of the 9/16"-18 UNF ring gage should I choose for a 2A thread class?

This model 361144550 is the correct choice; it is built to 2A class with Go pitch diameter .525 in, No-Go pitch diameter .5205 in, and a thread length of 9/16 in.

More in Meters, Testers & Measuring Tools

Similar items