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
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Insize 4645-1A14 – Whitworth Pipe Thread Plug Gage (G Series), GO and No Go, G 1/2-14
Insize
$307.00Insize 4645-1A14 – Whitworth Pipe T4645-1A14- SKU:
- 4645-1A14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.40 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4645-1A14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375279
- Package Weight:
- 0.4 lb
- Package Length:
- 5.2 in
- Package Width:
- 1.57 in
- Package Height:
- 1.57 in
- Feature 1:
- Standard ISO 228
$307.00 -
Insize 4645-1B19 – Whitworth Pipe Thread Plug Gage (G Series), GO and No Go, G 1/4-19
Insize
$305.00Insize 4645-1B19 – Whitworth Pipe T4645-1B19- SKU:
- 4645-1B19
- 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:
- 4645-1B19
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375255
- Package Weight:
- 0.13 lb
- Package Length:
- 4.02 in
- Package Width:
- 0.91 in
- Package Height:
- 0.91 in
- Feature 1:
- Standard ISO 228
$305.00 -
Insize 4645-1C28 – Whitworth Pipe Thread Plug Gage (G Series), GO and No Go, G 1/8-28
Insize
$304.00Insize 4645-1C28 – Whitworth Pipe T4645-1C28- SKU:
- 4645-1C28
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.07 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4645-1C28
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375248
- Package Weight:
- 0.07 lb
- Package Length:
- 0.94 in
- Package Width:
- 0.94 in
- Package Height:
- 3.43 in
- Feature 1:
- Standard ISO 228
$304.00 -
Insize 4645-1G11 – Whitworth Pipe Thread Plug Gage (G Series), GO and No Go, G 1.1/4-11
Insize
$678.89Insize 4645-1G11 – Whitworth Pipe T4645-1G11- SKU:
- 4645-1G11
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.60 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4645-1G11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375309
- Package Weight:
- 1.6 lb
- Package Length:
- 8.58 in
- Package Width:
- 2.36 in
- Package Height:
- 2.36 in
- Feature 1:
- Standard ISO 228
$678.89 -
Insize 4645-1H11 – Whitworth Pipe Thread Plug Gage (G Series), GO and No Go, G 1.1/2-11
Insize
$520.00Insize 4645-1H11 – Whitworth Pipe T4645-1H11- SKU:
- 4645-1H11
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.90 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4645-1H11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375316
- Package Weight:
- 1.9 lb
- Package Length:
- 8.58 in
- Package Width:
- 2.36 in
- Package Height:
- 2.36 in
- Feature 1:
- Standard ISO 228
$520.00 -
Insize 4645-211 – Whitworth Pipe Thread Plug Gage (G Series), GO and No Go, G 2-11
Insize
$642.00Insize 4645-211 – Whitworth Pipe Th4645-211- SKU:
- 4645-211
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 2.14 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4645-211
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375323
- Package Weight:
- 2.14 lb
- Package Length:
- 8.66 in
- Package Width:
- 2.76 in
- Package Height:
- 2.76 in
- Feature 1:
- Standard ISO 228
$642.00 -
Insize 4645-3B14 – Whitworth Pipe Thread Plug Gage (G Series), GO and No Go, G 3/4-14
Insize
$373.00Insize 4645-3B14 – Whitworth Pipe T4645-3B14- SKU:
- 4645-3B14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.50 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4645-3B14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375286
- Package Weight:
- 0.5 lb
- Package Length:
- 5.24 in
- Package Width:
- 1.57 in
- Package Height:
- 1.57 in
- Feature 1:
- Standard ISO 228
$373.00 -
Insize 4645-3C19 – Whitworth Pipe Thread Plug Gage (G Series), GO and No Go, G 3/8-19
Insize
$305.00Insize 4645-3C19 – Whitworth Pipe T4645-3C19- SKU:
- 4645-3C19
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.21 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4645-3C19
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375262
- Package Weight:
- 0.21 lb
- Package Length:
- 4.72 in
- Package Width:
- 0.94 in
- Package Height:
- 0.94 in
- Feature 1:
- Standard ISO 228
$305.00 -
Insize 4646-111 – BSPT Taper Thread Plug Gage, 1-11 BSPT
Insize
$1,316.00Insize 4646-111 – BSPT Taper Thread4646-111- SKU:
- 4646-111
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.57 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4646-111
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640374968
- Package Weight:
- 0.57 lb
- Package Length:
- 5.12 in
- Package Width:
- 1.57 in
- Package Height:
- 1.57 in
- Feature 1:
- Standard BS 21-1985
$1,316.00 -
Insize 4646-1A14 – BSPT Taper Thread Plug Gage, 1/2-14 BSPT
Insize
$1,018.00Insize 4646-1A14 – BSPT Taper Threa4646-1A14- SKU:
- 4646-1A14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.41 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4646-1A14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640374944
- Package Weight:
- 0.41 lb
- Package Length:
- 5.24 in
- Package Width:
- 1.57 in
- Package Height:
- 1.57 in
- Feature 1:
- Standard BS 21-1985
$1,018.00 -
Insize 4646-1B19 – BSPT Taper Thread Plug Gage, 1/4-19 BSPT
Insize
$1,014.00Insize 4646-1B19 – BSPT Taper Threa4646-1B19- SKU:
- 4646-1B19
- 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:
- 4646-1B19
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640374920
- Package Weight:
- 0.09 lb
- Package Length:
- 3.39 in
- Package Width:
- 0.94 in
- Package Height:
- 0.94 in
- Feature 1:
- Standard BS 21-1985
$1,014.00 -
Insize 4646-1C28 – BSPT Taper Thread Plug Gage, 1/8-28 BSPT
Insize
$1,254.00Insize 4646-1C28 – BSPT Taper Threa4646-1C28- SKU:
- 4646-1C28
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.03 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4646-1C28
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640374913
- Package Weight:
- 0.03 lb
- Package Length:
- 3.35 in
- Package Width:
- 0.87 in
- Package Height:
- 0.87 in
- Feature 1:
- Standard BS 21-1985
$1,254.00 -
Insize 4646-1G11 – BSPT Taper Thread Plug Gage, 1.1/4-11 BSPT
Insize
$1,318.00Insize 4646-1G11 – BSPT Taper Threa4646-1G11- SKU:
- 4646-1G11
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.88 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4646-1G11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640374975
- Package Weight:
- 0.88 lb
- Package Length:
- 5.91 in
- Package Width:
- 1.97 in
- Package Height:
- 1.97 in
- Feature 1:
- Standard BS 21-1985
$1,318.00 -
Insize 4646-1H11 – BSPT Taper Thread Plug Gage, 1.1/2-11 BSPT
Insize
$1,321.00Insize 4646-1H11 – BSPT Taper Threa4646-1H11- SKU:
- 4646-1H11
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.99 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4646-1H11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640374982
- Package Weight:
- 0.99 lb
- Package Length:
- 5.91 in
- Package Width:
- 1.97 in
- Package Height:
- 1.97 in
- Feature 1:
- Standard BS 21-1985
$1,321.00 -
Insize 4646-211 – BSPT Taper Thread Plug Gage, 2-11 BSPT
Insize
$1,962.00Insize 4646-211 – BSPT Taper Thread4646-211- SKU:
- 4646-211
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 3.20 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4646-211
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640374999
- Package Weight:
- 3.2 lb
- Package Length:
- 7.95 in
- Package Width:
- 5.91 in
- Package Height:
- 3.94 in
- Feature 1:
- Standard BS 21-1985
$1,962.00 -
Insize 4646-2H11 – BSPT Taper Thread Plug Gage, 2.1/2-11 BSPT
Insize
$1,984.00Insize 4646-2H11 – BSPT Taper Threa4646-2H11- SKU:
- 4646-2H11
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 3.31 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4646-2H11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375002
- Package Weight:
- 3.31 lb
- Package Length:
- 7.95 in
- Package Width:
- 5.91 in
- Package Height:
- 3.94 in
- Feature 1:
- Standard BS 21-1985
$1,984.00 -
Insize 4646-311 – BSPT Taper Thread Plug Gage, 3-11 BSPT
Insize
$2,016.00Insize 4646-311 – BSPT Taper Thread4646-311- SKU:
- 4646-311
- 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:
- 4646-311
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375019
- Package Weight:
- 4.42 lb
- Package Length:
- 8.03 in
- Package Width:
- 5.83 in
- Package Height:
- 5.04 in
- Feature 1:
- Standard BS 21-1985
$2,016.00 -
Insize 4646-3B14 – BSPT Taper Thread Plug Gage, 3/4-14 BSPT
Insize
$1,018.00Insize 4646-3B14 – BSPT Taper Threa4646-3B14- SKU:
- 4646-3B14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.33 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4646-3B14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640374951
- Package Weight:
- 0.33 lb
- Package Length:
- 5.04 in
- Package Width:
- 1.57 in
- Package Height:
- 1.57 in
- Feature 1:
- Standard BS 21-1985
$1,018.00 -
Insize 4646-3C19 – BSPT Taper Thread Plug Gage, 3/8-19 BSPT
Insize
$1,015.00Insize 4646-3C19 – BSPT Taper Threa4646-3C19- SKU:
- 4646-3C19
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.14 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4646-3C19
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640374937
- Package Weight:
- 0.14 lb
- Package Length:
- 3.78 in
- Package Width:
- 0.98 in
- Package Height:
- 0.98 in
- Feature 1:
- Standard BS 21-1985
$1,015.00 -
Insize 4646-411 – BSPT Taper Thread Plug Gage, 4-11 BSPT
Insize
$3,012.00Insize 4646-411 – BSPT Taper Thread4646-411- SKU:
- 4646-411
- 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:
- 4646-411
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375026
- Package Weight:
- 5.97 lb
- Package Length:
- 8.03 in
- Package Width:
- 5.83 in
- Package Height:
- 5.04 in
- Feature 1:
- Standard BS 21-1985
$3,012.00
