VG Thread Gages

Vermont Gage Thread Gages: Precision Thread Measurement Solutions

VG thread gages (thread gauges) are precision inspection tools used to verify threaded features on parts for size, fit, and functional assembly (application dependent). In production and quality control, thread gages are commonly used for fast, repeatable checks—helping teams confirm that internal or external threads meet print requirements without relying only on variable measuring tools. Depending on the item, thread gaging may be done with thread plug gages (for internal threads) and thread ring gages (for external threads), often in GO/NO‑GO configurations for pass/fail inspection (verify per listing).

Working Thread Plug, Thread Ring and Thread Setting Plug Gages are manufactured to inspect the Pitch Diameter and the Functional Thread. Thread gages are used to ensure the assembly of mating parts. Unified Inch standard gages are manufactured per ASME B1.2. M Series Metric thread gages are manufactured per ASME B1.16M. Standard thread gages are made to a Class X tolerance. Gages may be purchased individually or as assemblies. Plug gage assemblies are marked with the thread size, class of fit and pitch diameters. Pipe Gages per ASME B1.20.1, ASME B1.20.5 and Hole Location gages stocked. ACME, Buttress, STI and gages for other custom thread forms are also available.

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3/8-24 NF - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301134040
MPN: 301134040

4-40 NC - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301110040
MPN: 301110040

4-48 NF - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301111040
MPN: 301111040

5-40 NC - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301112540
MPN: 301112540

5-44 NF - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301113540
MPN: 301113540

5/16-18 NC - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301129540
MPN: 301129540

5/16-24 NF - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301130540
MPN: 301130540

5/8-11 NC - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301147040
MPN: 301147040

6-32 NC - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301115040
MPN: 301115040

6-40 NF - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301116040
MPN: 301116040

7/16-14 NC - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301136540
MPN: 301136540

7/16-20 NF - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301137540
MPN: 301137540

7/8-14 NF - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301158040
MPN: 301158040

7/8-9 NC - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301157040
MPN: 301157040

8-32 NC - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301117540
MPN: 301117540

8-36 NF - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301118540
MPN: 301118540

9/16-12 NC - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301143540
MPN: 301143540

9/16-18 NF - Class 2B - Double End Thread Plug Gage with Handle

SKU: VG-301144540
MPN: 301144540

M1.6 x .35 - Class 6H - Double End Thread Plug Gage with Handle

SKU: VG-302101030
MPN: 302101030

M10 x 1.25 - Class 6H - Double End Thread Plug Gage with Handle

SKU: VG-302124530
MPN: 302124530

M10 x 1.5 - Class 6H - Double End Thread Plug Gage with Handle

SKU: VG-302125530
MPN: 302125530

M12 x 1.25 - Class 6H - Double End Thread Plug Gage with Handle

SKU: VG-302128530
MPN: 302128530

M12 x 1.75 - Class 6H - Double End Thread Plug Gage with Handle

SKU: VG-302130530
MPN: 302130530

M14 x 1.5 - Class 6H - Double End Thread Plug Gage with Handle

SKU: VG-302132030
MPN: 302132030