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Thread Gages & Thread Measurement

Thread Gages & Thread Measurement

Insize Thread Gages & Thread Measurement

Authorized Insize distributor  |  Ships direct from Insize  |  Quote reply same day

Insize 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…ChooseExample
Check an external threadGO ring plus the matching NO GO ring4120-36
Check an internal threadThread plug gage4130-36
Measure pitch diameter with a micrometer3-wires sized to the pitch7382-24

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 Quote
  • Insize 3281-SPE67 precision measuring tool

    Insize 3281-SPE67 – 60° Screw Thread Micrometer Setting Standard, 7IN

    Insize

    $253.23
    Insize 3281-SPE67 – 60° Screw Threa
    3281-SPE67
    SKU:
    3281-SPE67
    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:
    3281-SPE67
    Product Family:
    Measuring Tool Sets
    Supplier Category Code:
    A
    EAN:
    6928640328398
    Package Weight:
    0.21 lb
    Package Length:
    7.48 in
    Package Width:
    0.91 in
    Package Height:
    0.91 in
    $253.23
  • Insize 3281-SPE7 precision measuring tool

    Insize 3281-SPE7 – 55° Screw Thread Micrometer Setting Standard, 7IN

    Insize

    $259.00
    Insize 3281-SPE7 – 55° Screw Thread
    3281-SPE7
    SKU:
    3281-SPE7
    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:
    3281-SPE7
    Product Family:
    Measuring Tool Sets
    Supplier Category Code:
    A
    EAN:
    6928640328329
    Package Weight:
    0.21 lb
    Package Length:
    7.48 in
    Package Width:
    0.98 in
    Package Height:
    0.98 in
    $259.00
  • Insize 3581-100E precision measuring tool

    Insize 3581-100E – Digital Screw Thread Micrometer, 3-4IN/75-100MM

    Insize

    $636.00
    Insize 3581-100E – Digital Screw Th
    3581-100E
    SKU:
    3581-100E
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    3.06 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3581-100E
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356247
    Package Weight:
    3.06 lb
    Package Length:
    13.31 in
    Package Width:
    7.91 in
    Package Height:
    1.73 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    Measure pitch diameter of screw threads.
    Feature 3:
    Button function: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output.
    Feature 5:
    LR44 battery, automatic power off.
    Feature 6:
    Non-rotating spindle. Ratchet stop.
    Feature 7:
    Supplied with 60° setting standards (except 0-1'/0-25mm).
    Feature 8:
    Optional accessory: 55°setting standards, measuring tips (part no. 7381), data output cable.
    $636.00
  • Insize 3581-25E precision measuring tool

    Insize 3581-25E – Digital Screw Thread Micrometer, 0-1IN/0-25MM

    Insize

    $486.00
    Insize 3581-25E – Digital Screw Thr
    3581-25E
    SKU:
    3581-25E
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    1.56 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3581-25E
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356216
    Package Weight:
    1.56 lb
    Package Length:
    8.9 in
    Package Width:
    5.04 in
    Package Height:
    1.69 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    Measure pitch diameter of screw threads.
    Feature 3:
    Button function: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output.
    Feature 5:
    LR44 battery, automatic power off.
    Feature 6:
    Non-rotating spindle. Ratchet stop.
    Feature 7:
    Supplied with 60° setting standards (except 0-1'/0-25mm).
    Feature 8:
    Optional accessory: 55°setting standards, measuring tips (part no. 7381), data output cable.
    $486.00
  • Insize 3581-50E precision measuring tool

    Insize 3581-50E – Digital Screw Thread Micrometer, 1-2IN/25-50MM

    Insize

    $532.00
    Insize 3581-50E – Digital Screw Thr
    3581-50E
    SKU:
    3581-50E
    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:
    3581-50E
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356223
    Package Weight:
    1.9 lb
    Package Length:
    10.04 in
    Package Width:
    5.83 in
    Package Height:
    1.69 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    Measure pitch diameter of screw threads.
    Feature 3:
    Button function: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output.
    Feature 5:
    LR44 battery, automatic power off.
    Feature 6:
    Non-rotating spindle. Ratchet stop.
    Feature 7:
    Supplied with 60° setting standards (except 0-1'/0-25mm).
    Feature 8:
    Optional accessory: 55°setting standards, measuring tips (part no. 7381), data output cable.
    $532.00
  • Insize 3581-75E precision measuring tool

    Insize 3581-75E – Digital Screw Thread Micrometer, 2-3IN/50-75MM

    Insize

    $583.00
    Insize 3581-75E – Digital Screw Thr
    3581-75E
    SKU:
    3581-75E
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    2.56 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    3581-75E
    Product Family:
    Micrometers
    Supplier Category Code:
    A
    EAN:
    6928640356230
    Package Weight:
    2.56 lb
    Package Length:
    12.09 in
    Package Width:
    6.97 in
    Package Height:
    1.73 in
    Feature 1:
    Resolution .00005'/0.001mm.
    Feature 2:
    Measure pitch diameter of screw threads.
    Feature 3:
    Button function: on/off, set, inch/mm, ABS/INC.
    Feature 4:
    Data output.
    Feature 5:
    LR44 battery, automatic power off.
    Feature 6:
    Non-rotating spindle. Ratchet stop.
    Feature 7:
    Supplied with 60° setting standards (except 0-1'/0-25mm).
    Feature 8:
    Optional accessory: 55°setting standards, measuring tips (part no. 7381), data output cable.
    $583.00
  • Insize 4120-10 precision measuring tool

    Insize 4120-10 – Metric Thread Ring Gage, Go, M10x1.5

    Insize

    $83.00
    Insize 4120-10 – Metric Thread Ring
    4120-10
    SKU:
    4120-10
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.17 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    4120-10
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341458
    Package Weight:
    0.17 lb
    Package Length:
    1.65 in
    Package Width:
    1.65 in
    Package Height:
    0.59 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $83.00
  • Insize 4120-10N precision measuring tool

    Insize 4120-10N – Metric Thread Ring Gage, No Go, M10x1.5

    Insize

    $69.10
    Insize 4120-10N – Metric Thread Rin
    4120-10N
    SKU:
    4120-10N
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.11 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    4120-10N
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341762
    Package Weight:
    0.11 lb
    Package Length:
    1.65 in
    Package Width:
    1.61 in
    Package Height:
    0.63 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $69.10
  • Insize 4120-11 precision measuring tool

    Insize 4120-11 – Metric Thread Ring Gage, Go, M11x1.5

    Insize

    $83.70
    Insize 4120-11 – Metric Thread Ring
    4120-11
    SKU:
    4120-11
    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:
    4120-11
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341465
    Package Weight:
    0.27 lb
    Package Length:
    2.2 in
    Package Width:
    2.13 in
    Package Height:
    0.79 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $83.70
  • Insize 4120-11N precision measuring tool

    Insize 4120-11N – Metric Thread Ring Gage, No Go, M11x1.5

    Insize

    $69.80
    Insize 4120-11N – Metric Thread Rin
    4120-11N
    SKU:
    4120-11N
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.16 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    4120-11N
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341779
    Package Weight:
    0.16 lb
    Package Length:
    2.2 in
    Package Width:
    2.13 in
    Package Height:
    0.79 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $69.80
  • Insize 4120-12 precision measuring tool

    Insize 4120-12 – Metric Thread Ring Gage, Go, M12x1.75

    Insize

    $72.60
    Insize 4120-12 – Metric Thread Ring
    4120-12
    SKU:
    4120-12
    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:
    4120-12
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341472
    Package Weight:
    0.27 lb
    Package Length:
    2.2 in
    Package Width:
    2.13 in
    Package Height:
    0.91 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $72.60
  • Insize 4120-12N precision measuring tool

    Insize 4120-12N – Metric Thread Ring Gage, No Go, M12x1.75

    Insize

    $62.40
    Insize 4120-12N – Metric Thread Rin
    4120-12N
    SKU:
    4120-12N
    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:
    4120-12N
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341786
    Package Weight:
    0.21 lb
    Package Length:
    2.09 in
    Package Width:
    2.17 in
    Package Height:
    0.87 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $62.40
  • Insize 4120-14 precision measuring tool

    Insize 4120-14 – Metric Thread Ring Gage, Go, M14x2

    Insize

    $81.50
    Insize 4120-14 – Metric Thread Ring
    4120-14
    SKU:
    4120-14
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.30 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    4120-14
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341489
    Package Weight:
    0.3 lb
    Package Length:
    2.2 in
    Package Width:
    2.13 in
    Package Height:
    0.79 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $81.50
  • Insize 4120-14N precision measuring tool

    Insize 4120-14N – Metric Thread Ring Gage, No Go, M14x2

    Insize

    $67.60
    Insize 4120-14N – Metric Thread Rin
    4120-14N
    SKU:
    4120-14N
    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:
    4120-14N
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341793
    Package Weight:
    0.19 lb
    Package Length:
    2.24 in
    Package Width:
    2.13 in
    Package Height:
    0.91 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $67.60
  • Insize 4120-16 precision measuring tool

    Insize 4120-16 – Metric Thread Ring Gage, Go, M16x2

    Insize

    $81.50
    Insize 4120-16 – Metric Thread Ring
    4120-16
    SKU:
    4120-16
    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:
    4120-16
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341496
    Package Weight:
    0.4 lb
    Package Length:
    2.09 in
    Package Width:
    2.17 in
    Package Height:
    0.87 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $81.50
  • Insize 4120-16N precision measuring tool

    Insize 4120-16N – Metric Thread Ring Gage, No Go, M16x2

    Insize

    $67.60
    Insize 4120-16N – Metric Thread Rin
    4120-16N
    SKU:
    4120-16N
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.30 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    4120-16N
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341809
    Package Weight:
    0.3 lb
    Package Length:
    2.2 in
    Package Width:
    2.13 in
    Package Height:
    0.79 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $67.60
  • Insize 4120-18 precision measuring tool

    Insize 4120-18 – Metric Thread Ring Gage, Go, M18x2.5

    Insize

    $91.70
    Insize 4120-18 – Metric Thread Ring
    4120-18
    SKU:
    4120-18
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.51 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    4120-18
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341502
    Package Weight:
    0.51 lb
    Package Length:
    3.11 in
    Package Width:
    3.07 in
    Package Height:
    1.18 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $91.70
  • Insize 4120-18N precision measuring tool

    Insize 4120-18N – Metric Thread Ring Gage, No Go, M18x2.5

    Insize

    $74.70
    Insize 4120-18N – Metric Thread Rin
    4120-18N
    SKU:
    4120-18N
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.34 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    4120-18N
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341816
    Package Weight:
    0.34 lb
    Package Length:
    2.95 in
    Package Width:
    2.95 in
    Package Height:
    1.18 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $74.70
  • Insize 4120-2 precision measuring tool

    Insize 4120-2 – Metric Thread Ring Gage, Go, M2x0.4

    Insize

    $94.60
    Insize 4120-2 – Metric Thread Ring
    4120-2
    SKU:
    4120-2
    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:
    4120-2
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341342
    Package Weight:
    0.04 lb
    Package Length:
    1.65 in
    Package Width:
    1.57 in
    Package Height:
    0.59 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $94.60
  • Insize 4120-20 precision measuring tool

    Insize 4120-20 – Metric Thread Ring Gage, Go, M20x2.5

    Insize

    $93.20
    Insize 4120-20 – Metric Thread Ring
    4120-20
    SKU:
    4120-20
    Availability:
    Ships direct from Insize. Most items in stock; we confirm your ship date by email after you order.
    Weight:
    0.49 LBS
    Brand:
    Insize
    Manufacturer Part Number:
    4120-20
    Product Family:
    Gages and Reference Tools
    Supplier Category Code:
    A
    EAN:
    6928640341519
    Package Weight:
    0.49 lb
    Package Length:
    2.95 in
    Package Width:
    2.95 in
    Package Height:
    1.18 in
    Feature 1:
    Go and No-Go gages are supplied separately.
    Feature 2:
    Class 6g.
    Feature 3:
    Standard ISO1502.
    Feature 4:
    Supplied with manufacturer inspection certificate.
    $93.20