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 4635-1C28N – Whitworth Pipe Thread Ring Gage (G Series), No Go, G 1/8-28
Insize
$381.93Insize 4635-1C28N – Whitworth Pipe4635-1C28N- SKU:
- 4635-1C28N
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.04 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-1C28N
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375422
- Package Weight:
- 0.04 lb
- Package Length:
- 1.57 in
- Package Width:
- 1.57 in
- Package Height:
- 0.59 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$381.93 -
Insize 4635-1G11 – Whitworth Pipe Thread Ring Gage (G Series), GO, G 1.1/4-11
Insize
$651.63Insize 4635-1G11 – Whitworth Pipe T4635-1G11- SKU:
- 4635-1G11
- 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:
- 4635-1G11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375392
- Package Weight:
- 1.34 lb
- Package Length:
- 4.06 in
- Package Width:
- 3.82 in
- Package Height:
- 1.69 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$651.63 -
Insize 4635-1G11N – Whitworth Pipe Thread Ring Gage (G Series), No Go, G 1.1/4-11
Insize
$651.63Insize 4635-1G11N – Whitworth Pipe4635-1G11N- SKU:
- 4635-1G11N
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.03 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-1G11N
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375484
- Package Weight:
- 1.03 lb
- Package Length:
- 4.06 in
- Package Width:
- 3.82 in
- Package Height:
- 1.69 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$651.63 -
Insize 4635-1H11 – Whitworth Pipe Thread Ring Gage (G Series), GO, G 1.1/2-11
Insize
$703.35Insize 4635-1H11 – Whitworth Pipe T4635-1H11- SKU:
- 4635-1H11
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.21 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-1H11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375408
- Package Weight:
- 1.21 lb
- Package Length:
- 4.06 in
- Package Width:
- 3.82 in
- Package Height:
- 1.69 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$703.35 -
Insize 4635-1H11N – Whitworth Pipe Thread Ring Gage (G Series), No Go, G 1.1/2-11
Insize
$698.28Insize 4635-1H11N – Whitworth Pipe4635-1H11N- SKU:
- 4635-1H11N
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.94 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-1H11N
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375491
- Package Weight:
- 0.94 lb
- Package Length:
- 4.06 in
- Package Width:
- 3.82 in
- Package Height:
- 1.69 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$698.28 -
Insize 4635-211 – Whitworth Pipe Thread Ring Gage (G Series), GO, G 2-11
Insize
$892.44Insize 4635-211 – Whitworth Pipe Th4635-211- SKU:
- 4635-211
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 2.09 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-211
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375415
- Package Weight:
- 2.09 lb
- Package Length:
- 5.51 in
- Package Width:
- 5.12 in
- Package Height:
- 2.56 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$892.44 -
Insize 4635-211N – Whitworth Pipe Thread Ring Gage (G Series), No Go, G 2-11
Insize
$892.44Insize 4635-211N – Whitworth Pipe T4635-211N- SKU:
- 4635-211N
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.74 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-211N
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375507
- Package Weight:
- 1.74 lb
- Package Length:
- 5.51 in
- Package Width:
- 5.12 in
- Package Height:
- 2.56 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$892.44 -
Insize 4635-3B14 – Whitworth Pipe Thread Ring Gage (G Series), GO, G 3/4-14
Insize
$458.95Insize 4635-3B14 – Whitworth Pipe T4635-3B14- SKU:
- 4635-3B14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.69 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-3B14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375378
- Package Weight:
- 0.69 lb
- Package Length:
- 3.07 in
- Package Width:
- 2.95 in
- Package Height:
- 1.18 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$458.95 -
Insize 4635-3B14N – Whitworth Pipe Thread Ring Gage (G Series), No Go, G 3/4-14
Insize
$458.95Insize 4635-3B14N – Whitworth Pipe4635-3B14N- SKU:
- 4635-3B14N
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.47 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-3B14N
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375460
- Package Weight:
- 0.47 lb
- Package Length:
- 3.07 in
- Package Width:
- 2.95 in
- Package Height:
- 1.18 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$458.95 -
Insize 4635-3C19 – Whitworth Pipe Thread Ring Gage (G Series), GO, G 3/8-19
Insize
$381.93Insize 4635-3C19 – Whitworth Pipe T4635-3C19- SKU:
- 4635-3C19
- 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:
- 4635-3C19
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375354
- Package Weight:
- 0.31 lb
- Package Length:
- 2.2 in
- Package Width:
- 2.05 in
- Package Height:
- 0.87 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$381.93 -
Insize 4635-3C19N – Whitworth Pipe Thread Ring Gage (G Series), No Go, G 3/8-19
Insize
$381.93Insize 4635-3C19N – Whitworth Pipe4635-3C19N- SKU:
- 4635-3C19N
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.19 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-3C19N
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375446
- Package Weight:
- 0.19 lb
- Package Length:
- 2.2 in
- Package Width:
- 2.05 in
- Package Height:
- 0.87 in
- Feature 1:
- Class A
- Feature 2:
- Standard ISO 228
$381.93 -
Insize 4636-111 – BSPT Taper Thread Ring Gage, 1-11 BSPT
Insize
$2,625.00Insize 4636-111 – BSPT Taper Thread4636-111- SKU:
- 4636-111
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.95 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-111
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375101
- Package Weight:
- 0.95 lb
- Package Length:
- 4.17 in
- Package Width:
- 3.94 in
- Package Height:
- 1.77 in
- Feature 1:
- Standard BS 21-1985
$2,625.00 -
Insize 4636-1A14 – BSPT Taper Thread Ring Gage, 1/2-14 BSPT
Insize
$1,653.00Insize 4636-1A14 – BSPT Taper Threa4636-1A14- SKU:
- 4636-1A14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.45 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-1A14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375088
- Package Weight:
- 0.45 lb
- Package Length:
- 3.07 in
- Package Width:
- 2.95 in
- Package Height:
- 1.18 in
- Feature 1:
- Standard BS 21-1985
$1,653.00 -
Insize 4636-1B19 – BSPT Taper Thread Ring Gage, 1/4-19 BSPT
Insize
$2,084.00Insize 4636-1B19 – BSPT Taper Threa4636-1B19- SKU:
- 4636-1B19
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.18 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-1B19
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375064
- Package Weight:
- 0.18 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 4636-1C28 – BSPT Taper Thread Ring Gage, 1/8-28 BSPT
Insize
$2,484.00Insize 4636-1C28 – BSPT Taper Threa4636-1C28- SKU:
- 4636-1C28
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.10 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-1C28
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375057
- Package Weight:
- 0.1 lb
- Package Length:
- 2.24 in
- Package Width:
- 2.13 in
- Package Height:
- 0.91 in
- Feature 1:
- Standard BS 21-1985
$2,484.00 -
Insize 4636-1G11 – BSPT Taper Thread Ring Gage, 1.1/4-11 BSPT
Insize
$2,627.00Insize 4636-1G11 – BSPT Taper Threa4636-1G11- SKU:
- 4636-1G11
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.43 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-1G11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375118
- Package Weight:
- 1.43 lb
- Package Length:
- 3.74 in
- Package Width:
- 3.74 in
- Package Height:
- 1.77 in
- Feature 1:
- Standard BS 21-1985
$2,627.00 -
Insize 4636-1H11 – BSPT Taper Thread Ring Gage, 1.1/2-11 BSPT
Insize
$2,626.00Insize 4636-1H11 – BSPT Taper Threa4636-1H11- SKU:
- 4636-1H11
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.32 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-1H11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375125
- Package Weight:
- 1.32 lb
- Package Length:
- 4.17 in
- Package Width:
- 3.94 in
- Package Height:
- 1.77 in
- Feature 1:
- Standard BS 21-1985
$2,626.00 -
Insize 4636-211 – BSPT Taper Thread Ring Gage, 2-11 BSPT
Insize
$3,282.00Insize 4636-211 – BSPT Taper Thread4636-211- SKU:
- 4636-211
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 5.21 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-211
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375132
- Package Weight:
- 5.21 lb
- Package Length:
- 5.12 in
- Package Width:
- 5.12 in
- Package Height:
- 2.56 in
- Feature 1:
- Standard BS 21-1985
$3,282.00 -
Insize 4636-2H11 – BSPT Taper Thread Ring Gage, 2.1/2-11 BSPT
Insize
$3,301.00Insize 4636-2H11 – BSPT Taper Threa4636-2H11- SKU:
- 4636-2H11
- 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:
- 4636-2H11
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375149
- Package Weight:
- 3.31 lb
- Package Length:
- 5.12 in
- Package Width:
- 5.12 in
- Package Height:
- 2.56 in
- Feature 1:
- Standard BS 21-1985
$3,301.00 -
Insize 4636-311 – BSPT Taper Thread Ring Gage, 3-11 BSPT
Insize
$3,307.00Insize 4636-311 – BSPT Taper Thread4636-311- SKU:
- 4636-311
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 5.46 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4636-311
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375156
- Package Weight:
- 5.46 lb
- Package Length:
- 8.27 in
- Package Width:
- 7.28 in
- Package Height:
- 2.76 in
- Feature 1:
- Standard BS 21-1985
$3,307.00
