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 4634-1A14 – NPT Thread Ring Gage, 1/2x14NPT
Insize
$880.13Insize 4634-1A14 – NPT Thread Ring4634-1A14- SKU:
- 4634-1A14
- 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:
- 4634-1A14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346989
- Package Weight:
- 0.33 lb
- Package Length:
- 2.95 in
- Package Width:
- 3.07 in
- Package Height:
- 1.18 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$880.13 -
Insize 4634-1B18 – NPT Thread Ring Gage, 1/4x18NPT
Insize
$883.25Insize 4634-1B18 – NPT Thread Ring4634-1B18- SKU:
- 4634-1B18
- 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:
- 4634-1B18
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346965
- Package Weight:
- 0.13 lb
- Package Length:
- 2.09 in
- Package Width:
- 2.2 in
- Package Height:
- 0.71 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$883.25 -
Insize 4634-1C27 – NPT Thread Ring Gage, 1/8x27NPT
Insize
$967.68Insize 4634-1C27 – NPT Thread Ring4634-1C27- SKU:
- 4634-1C27
- 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:
- 4634-1C27
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346958
- Package Weight:
- 0.06 lb
- Package Length:
- 1.57 in
- Package Width:
- 1.57 in
- Package Height:
- 0.59 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$967.68 -
Insize 4634-1D27 – NPT Thread Ring Gage, 1/16x27NPT
Insize
$967.73Insize 4634-1D27 – NPT Thread Ring4634-1D27- SKU:
- 4634-1D27
- 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:
- 4634-1D27
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346941
- Package Weight:
- 0.07 lb
- Package Length:
- 1.57 in
- Package Width:
- 1.57 in
- Package Height:
- 0.59 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$967.73 -
Insize 4634-1G12 – NPT Thread Ring Gage, 1-1/4x11.5NPT
Insize
$1,323.42Insize 4634-1G12 – NPT Thread Ring4634-1G12- SKU:
- 4634-1G12
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.91 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4634-1G12
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640347016
- Package Weight:
- 0.91 lb
- Package Length:
- 4.13 in
- Package Width:
- 3.94 in
- Package Height:
- 1.77 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$1,323.42 -
Insize 4634-1H12 – NPT Thread Ring Gage, 1-1/2x11.5NPT
Insize
$1,322.15Insize 4634-1H12 – NPT Thread Ring4634-1H12- SKU:
- 4634-1H12
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.85 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4634-1H12
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640347023
- Package Weight:
- 0.85 lb
- Package Length:
- 4.13 in
- Package Width:
- 3.94 in
- Package Height:
- 1.77 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$1,322.15 -
Insize 4634-1J8 – NPT Thread Ring Gage, 2-1/2x8NPT
Insize
$2,343.53Insize 4634-1J8 – NPT Thread Ring G4634-1J8- SKU:
- 4634-1J8
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 3.52 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4634-1J8
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640347047
- Package Weight:
- 3.52 lb
- Package Length:
- 7.4 in
- Package Width:
- 7.28 in
- Package Height:
- 2.76 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$2,343.53 -
Insize 4634-1N8 – NPT Thread Ring Gage, 3-1/2x8NPT
Insize
$2,914.48Insize 4634-1N8 – NPT Thread Ring G4634-1N8- SKU:
- 4634-1N8
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 5.13 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4634-1N8
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640347061
- Package Weight:
- 5.13 lb
- Package Length:
- 9.06 in
- Package Width:
- 9.06 in
- Package Height:
- 2.6 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$2,914.48 -
Insize 4634-212 – NPT Thread Ring Gage, 2x11.5NPT
Insize
$2,087.40Insize 4634-212 – NPT Thread Ring G4634-212- SKU:
- 4634-212
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 1.97 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4634-212
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640347030
- Package Weight:
- 1.97 lb
- Package Length:
- 7.48 in
- Package Width:
- 7.48 in
- Package Height:
- 2.56 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$2,087.40 -
Insize 4634-38 – NPT Thread Ring Gage, 3x8NPT
Insize
$2,885.77Insize 4634-38 – NPT Thread Ring Ga4634-38- SKU:
- 4634-38
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 4.23 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4634-38
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640347054
- Package Weight:
- 4.23 lb
- Package Length:
- 7.17 in
- Package Width:
- 7.17 in
- Package Height:
- 2.52 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$2,885.77 -
Insize 4634-3B14 – NPT Thread Ring Gage, 3/4x14NPT
Insize
$1,221.48Insize 4634-3B14 – NPT Thread Ring4634-3B14- SKU:
- 4634-3B14
- 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:
- 4634-3B14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346996
- Package Weight:
- 0.45 lb
- Package Length:
- 2.76 in
- Package Width:
- 2.76 in
- Package Height:
- 1.18 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$1,221.48 -
Insize 4634-3C18 – NPT Thread Ring Gage, 3/8x18NPT
Insize
$883.95Insize 4634-3C18 – NPT Thread Ring4634-3C18- SKU:
- 4634-3C18
- 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:
- 4634-3C18
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640346972
- Package Weight:
- 0.18 lb
- Package Length:
- 2.09 in
- Package Width:
- 2.2 in
- Package Height:
- 0.71 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$883.95 -
Insize 4634-48 – NPT Thread Ring Gage, 4x8NPT
Insize
$4,288.60Insize 4634-48 – NPT Thread Ring Ga4634-48- SKU:
- 4634-48
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 5.03 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4634-48
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640347078
- Package Weight:
- 5.03 lb
- Package Length:
- 9.06 in
- Package Width:
- 9.06 in
- Package Height:
- 2.6 in
- Feature 1:
- American tapered pipe thread for threads with sealant
- Feature 2:
- Standard ANSI/ASME B1.20.1
- Feature 3:
- Taper 1:16
- Feature 4:
- Material: OHNS (Oil Hardened Non-Shrining Steel)
$4,288.60 -
Insize 4635-111 – Whitworth Pipe Thread Ring Gage (G Series), GO, G 1-11
Insize
$630.38Insize 4635-111 – Whitworth Pipe Th4635-111- SKU:
- 4635-111
- 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:
- 4635-111
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375385
- Package Weight:
- 0.99 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
$630.38 -
Insize 4635-111N – Whitworth Pipe Thread Ring Gage (G Series), No Go, G 1-11
Insize
$630.38Insize 4635-111N – Whitworth Pipe T4635-111N- SKU:
- 4635-111N
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.77 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-111N
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375477
- Package Weight:
- 0.77 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
$630.38 -
Insize 4635-1A14 – Whitworth Pipe Thread Ring Gage (G Series), GO, G 1/2-14
Insize
$383.42Insize 4635-1A14 – Whitworth Pipe T4635-1A14- SKU:
- 4635-1A14
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.52 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-1A14
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375361
- Package Weight:
- 0.52 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
$383.42 -
Insize 4635-1A14N – Whitworth Pipe Thread Ring Gage (G Series), No Go, G 1/2-14
Insize
$383.42Insize 4635-1A14N – Whitworth Pipe4635-1A14N- SKU:
- 4635-1A14N
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.36 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-1A14N
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375453
- Package Weight:
- 0.36 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
$383.42 -
Insize 4635-1B19 – Whitworth Pipe Thread Ring Gage (G Series), GO, G 1/4-19
Insize
$381.93Insize 4635-1B19 – Whitworth Pipe T4635-1B19- SKU:
- 4635-1B19
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.23 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-1B19
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375347
- Package Weight:
- 0.23 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 4635-1B19N – Whitworth Pipe Thread Ring Gage (G Series), No Go, G 1/4-19
Insize
$381.93Insize 4635-1B19N – Whitworth Pipe4635-1B19N- SKU:
- 4635-1B19N
- Availability:
- Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
- Weight:
- 0.15 LBS
- Brand:
- Insize
- Manufacturer Part Number:
- 4635-1B19N
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375439
- Package Weight:
- 0.15 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 4635-1C28 – Whitworth Pipe Thread Ring Gage (G Series), GO, G 1/8-28
Insize
$381.93Insize 4635-1C28 – Whitworth Pipe T4635-1C28- SKU:
- 4635-1C28
- 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:
- 4635-1C28
- Product Family:
- Gages and Reference Tools
- Supplier Category Code:
- A
- EAN:
- 6928640375330
- 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
