Thread Gages & Thread Measurement
Insize Thread Gages & Thread Measurement
Authorized Insize distributor | Ships direct from Insize | Quote reply same dayInsize thread gages for accepting or rejecting threaded parts: GO and NO GO ring gages for external threads and plug gages for internal threads in metric, American (UN), NPT, BSPT and G-series pipe threads, plus 3-wires, screw thread micrometer tips and thread measuring instruments.
Choosing between options
| If you need to… | Choose | Example |
|---|---|---|
| Check an external thread | GO ring plus the matching NO GO ring | 4120-36 |
| Check an internal thread | Thread plug gage | 4130-36 |
| Measure pitch diameter with a micrometer | 3-wires sized to the pitch | 7382-24 |
Before you order
- GO and NO GO rings are separate part numbers (NO GO ends in N); order both to check a thread fully.
- For 60° threads the best wire diameter is 0.57735 × pitch; pick the 3-wire size for your pitch.
- Ships direct from Insize. Most items are in stock; we confirm your ship date by email after you order.
← All Precision Measuring categories
Need help choosing or a volume price?
Send thread size, pitch, class and GO / NO GO and the quantity — we reply the same day. (210) 494-1997 · sales@ldewitt.net
Request a QuoteSend thread size, pitch, class and GO / NO GO and the quantity — we reply the same day. (210) 494-1997 · sales@ldewitt.net
-
Insize 4636-3B14 – BSPT Taper Thread Ring Gage, 3/4-14 BSPT
Insize
$1,654.00Insize 4636-3B14 – BSPT Taper Threa4636-3B14- SKU:
- 4636-3B14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.65 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-3B14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375095
- Package Weight:
- 0.65 lb
- Package Length:
- 3.07 in
- Package Width:
- 2.95 in
- Package Height:
- 1.18 in
- Feature 1:
- Standard BS 21-1985
$1,654.00 -
Insize 4636-3C19 – BSPT Taper Thread Ring Gage, 3/8-19 BSPT
Insize
$2,084.00Insize 4636-3C19 – BSPT Taper Threa4636-3C19- SKU:
- 4636-3C19
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.25 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-3C19
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375071
- Package Weight:
- 0.25 lb
- Package Length:
- 2.24 in
- Package Width:
- 2.13 in
- Package Height:
- 0.91 in
- Feature 1:
- Standard BS 21-1985
$2,084.00 -
Insize 4636-411 – BSPT Taper Thread Ring Gage, 4-11 BSPT
Insize
$4,951.00Insize 4636-411 – BSPT Taper Thread4636-411- SKU:
- 4636-411
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 6.77 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-411
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375163
- Package Weight:
- 6.77 lb
- Package Length:
- 9.06 in
- Package Width:
- 9.06 in
- Package Height:
- 2.36 in
- Feature 1:
- Standard BS 21-1985
$4,951.00 -
Insize 4636-511 – BSPT Taper Thread Ring Gage, 5-11 BSPT
Insize
$5,708.00Insize 4636-511 – BSPT Taper Thread4636-511- SKU:
- 4636-511
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 7.22 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-511
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375170
- Package Weight:
- 7.22 lb
- Package Length:
- 9.06 in
- Package Width:
- 9.06 in
- Package Height:
- 2.56 in
- Feature 1:
- Standard BS 21-1985
$5,708.00 -
Insize 4636-611 – BSPT Taper Thread Ring Gage, 6-11 BSPT
Insize
$5,727.00Insize 4636-611 – BSPT Taper Thread4636-611- SKU:
- 4636-611
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 13.14 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-611
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375187
- Package Weight:
- 13.14 lb
- Package Length:
- 11.02 in
- Package Width:
- 11.02 in
- Package Height:
- 2.36 in
- Feature 1:
- Standard BS 21-1985
$5,727.00 -
Insize 4644-112 – NPT Thread Plug Gage, 1x11.5NPT
Insize
$541.49Insize 4644-112 – NPT Thread Plug G4644-112- SKU:
- 4644-112
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.53 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-112
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346866
- Package Weight:
- 0.53 lb
- Package Length:
- 5.12 in
- Package Width:
- 1.57 in
- Package Height:
- 1.57 in
- Feature 1:
- NPT THREAD PLUG GAGE, 1x11.5NPT
$541.49 -
Insize 4644-1A14 – NPT Thread Plug Gage, 1/2x14NPT
Insize
$431.27Insize 4644-1A14 – NPT Thread Plug4644-1A14- SKU:
- 4644-1A14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.27 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-1A14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346842
- Package Weight:
- 0.27 lb
- Package Length:
- 5.12 in
- Package Width:
- 1.57 in
- Package Height:
- 1.57 in
- Feature 1:
- NPT THREAD PLUG GAGE, 1/2x14NPT
$431.27 -
Insize 4644-1B18 – NPT Thread Plug Gage, 1/4x18NPT
Insize
$427.43Insize 4644-1B18 – NPT Thread Plug4644-1B18- SKU:
- 4644-1B18
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.09 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-1B18
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346828
- Package Weight:
- 0.09 lb
- Package Length:
- 3.54 in
- Package Width:
- 0.98 in
- Package Height:
- 0.98 in
- Feature 1:
- NPT THREAD PLUG GAGE, 1/4x18NPT
$427.43 -
Insize 4644-1C27 – NPT Thread Plug Gage, 1/8x27NPT
Insize
$491.37Insize 4644-1C27 – NPT Thread Plug4644-1C27- SKU:
- 4644-1C27
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.06 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-1C27
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346811
- Package Weight:
- 0.06 lb
- Package Length:
- 3.35 in
- Package Width:
- 0.98 in
- Package Height:
- 0.98 in
- Feature 1:
- NPT THREAD PLUG GAGE, 1/8x27NPT
$491.37 -
Insize 4644-1D27 – NPT Thread Plug Gage, 1/16x27NPT
Insize
$491.33Insize 4644-1D27 – NPT Thread Plug4644-1D27- SKU:
- 4644-1D27
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.06 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-1D27
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346804
- Package Weight:
- 0.06 lb
- Package Length:
- 3.15 in
- Package Width:
- 0.98 in
- Package Height:
- 0.98 in
- Feature 1:
- NPT THREAD PLUG GAGE, 1/16x27NPT
$491.33 -
Insize 4644-1G12 – NPT Thread Plug Gage, 1-1/4x11.5NPT
Insize
$545.61Insize 4644-1G12 – NPT Thread Plug4644-1G12- SKU:
- 4644-1G12
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.66 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-1G12
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346873
- Package Weight:
- 0.66 lb
- Package Length:
- 5.83 in
- Package Width:
- 1.97 in
- Package Height:
- 1.93 in
- Feature 1:
- NPT THREAD PLUG GAGE, 1-1/4x11.5NPT
$545.61 -
Insize 4644-1H12 – NPT Thread Plug Gage, 1-1/2x11.5NPT
Insize
$548.67Insize 4644-1H12 – NPT Thread Plug4644-1H12- SKU:
- 4644-1H12
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.82 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-1H12
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346880
- Package Weight:
- 0.82 lb
- Package Length:
- 5.91 in
- Package Width:
- 1.97 in
- Package Height:
- 1.97 in
- Feature 1:
- NPT THREAD PLUG GAGE, 1-1/2x11.5NPT
$548.67 -
Insize 4644-1J8 – NPT Thread Plug Gage, 2-1/2x8NPT
Insize
$898.34Insize 4644-1J8 – NPT Thread Plug G4644-1J8- SKU:
- 4644-1J8
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 3.09 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-1J8
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346903
- Package Weight:
- 3.09 lb
- Package Length:
- 7.95 in
- Package Width:
- 5.91 in
- Package Height:
- 3.94 in
- Feature 1:
- NPT THREAD PLUG GAGE, 2-1/2x8NPT
$898.34 -
Insize 4644-1N8 – NPT Thread Plug Gage, 3-1/2x8NPT
Insize
$927.92Insize 4644-1N8 – NPT Thread Plug G4644-1N8- SKU:
- 4644-1N8
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 5.04 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-1N8
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346927
- Package Weight:
- 5.04 lb
- Package Length:
- 8.07 in
- Package Width:
- 5.71 in
- Package Height:
- 5.12 in
- Feature 1:
- NPT THREAD PLUG GAGE, 3-1/2x8NPT
$927.92 -
Insize 4644-212 – NPT Thread Plug Gage, 2x11.5NPT
Insize
$558.07Insize 4644-212 – NPT Thread Plug G4644-212- SKU:
- 4644-212
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.34 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-212
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346897
- Package Weight:
- 1.34 lb
- Package Length:
- 8.66 in
- Package Width:
- 2.76 in
- Package Height:
- 2.76 in
- Feature 1:
- NPT THREAD PLUG GAGE, 2x11.5NPT
$558.07 -
Insize 4644-38 – NPT Thread Plug Gage, 3x8NPT
Insize
$918.51Insize 4644-38 – NPT Thread Plug Ga4644-38- SKU:
- 4644-38
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 4.42 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-38
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346910
- Package Weight:
- 4.42 lb
- Package Length:
- 8.03 in
- Package Width:
- 5.83 in
- Package Height:
- 5.04 in
- Feature 1:
- NPT THREAD PLUG GAGE, 3x8NPT
$918.51 -
Insize 4644-3B14 – NPT Thread Plug Gage, 3/4x14NPT
Insize
$431.89Insize 4644-3B14 – NPT Thread Plug4644-3B14- SKU:
- 4644-3B14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.31 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-3B14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346859
- Package Weight:
- 0.31 lb
- Package Length:
- 5.04 in
- Package Width:
- 1.54 in
- Package Height:
- 1.57 in
- Feature 1:
- NPT THREAD PLUG GAGE, 3/4x14NPT
$431.89 -
Insize 4644-3C18 – NPT Thread Plug Gage, 3/8x18NPT
Insize
$428.13Insize 4644-3C18 – NPT Thread Plug4644-3C18- SKU:
- 4644-3C18
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.13 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-3C18
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346835
- Package Weight:
- 0.13 lb
- Package Length:
- 3.86 in
- Package Width:
- 0.51 in
- Package Height:
- 0.51 in
- Feature 1:
- NPT THREAD PLUG GAGE, 3/8x18NPT
$428.13 -
Insize 4644-48 – NPT Thread Plug Gage, 4x8NPT
Insize
$1,357.04Insize 4644-48 – NPT Thread Plug Ga4644-48- SKU:
- 4644-48
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 5.97 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4644-48
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346934
- Package Weight:
- 5.97 lb
- Package Length:
- 8.03 in
- Package Width:
- 5.83 in
- Package Height:
- 5.04 in
- Feature 1:
- NPT THREAD PLUG GAGE, 4x8NPT
$1,357.04 -
Insize 4645-111 – Whitworth Pipe Thread Plug Gage (G Series), GO and No Go, G 1-11
Insize
$514.00Insize 4645-111 – Whitworth Pipe Th4645-111- SKU:
- 4645-111
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.00 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4645-111
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375293
- Package Weight:
- 1 lb
- Package Length:
- 8.94 in
- Package Width:
- 1.97 in
- Package Height:
- 1.97 in
- Feature 1:
- Standard ISO 228
$514.00
