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    32 Products

    Wear-Indicating Plug Gauges

    Image of Product. Front orientation. Plug Gauges. Wear-Indicating Plug Gauges.
    A black-oxide treatment on these gauges shows wear patterns so you can tell when you need to calibrate or replace the gauge. They help you measure hole sizes and depths, check hole location and distance, and set micrometers. All come with an accuracy certificate traceable to NIST that states they’ve passed a test for accuracy.
    If a go gauge can enter the hole and a no-go gauge is unable to enter, the hole is within tolerance.
    Go Gauges—Go gauges check the minimum hole diameter.
    No-Go Gauges—No-go gauges check the maximum hole diameter.
    Go Gauges
    No-Go Gauges
    Choose a Plug
    Gauge Size
    Lg.
    Surface Smoothness,
    RMS, μin
    Hardness
    Material
    Specs. Met
    Plug Gauge Size
    Tolerance
    Each
    Plug Gauge Size
    Tolerance
    Each
    Class ZZ Gauge
    0.0110" to 0.0605"2"10Rockwell C60Black-Oxide Tool SteelASME B89.1.50" to 0.0002"2320A00100000-0.0002" to 0"2321A00100000
    0.0610" to 0.5005"2"10Rockwell C60Black-Oxide Tool SteelASME B89.1.50" to 0.0002"2320A0020000-0.0002" to 0"2321A0020000
    0.5010" to 0.6255"2"10Rockwell C60Black-Oxide Tool SteelASME B89.1.50" to 0.0002"2320A0030000-0.0002" to 0"2321A0030000
    0.6260" to 0.7505"2"10Rockwell C60Black-Oxide Tool SteelASME B89.1.50" to 0.0002"2320A0040000-0.0002" to 0"2321A0040000
     

    High-Accuracy Roller Chain Wear-Indicating Gauges

    Image of ProductInUse. Front orientation. Contains Annotated, MultipleImages. Chain Wear Gauges. High-Accuracy Roller Chain Wear-Indicating Gauges.
    Precisely measure chain elongation to see if you need to replace your chain. These gauges give a more accurate reading than alternatives because they’re designed to anchor to a roller and extend across several links. A color indicator helps you quickly measure the space between rollers. If the gauge rests on top of the chain and you see green markings, your chain doesn't need to be replaced. If it slips between two rollers and you only see red markings, it’s time for a replacement.
    Chain Wear Gauges
    Image of Product. Front orientation. Chain Wear Gauges. High-Accuracy Roller Chain Wear-Indicating Gauges.
    For Roller
    Chain Trade No.
    Material
    Each
    For Single-, Double-, and Triple-Strand ANSI Roller Chain
    100Steel5576N160000000
    120Steel5576N17000000
    140Steel5576N18000000
    160Steel5576N19000000
    180Steel5576N21000000
    200Steel5576N2200000000
    240Steel5576N2300000000
     
    For Single-, Double-, and Triple-Strand ISO Roller Chain
    20BSteel5576N29000000
    24BSteel5576N31000000
    28BSteel5576N32000000
    32BSteel5576N33000000
     
    Chain Wear Gauges with Plastic Case
    Image of Product. Front orientation. Chain Wear Gauges. High-Accuracy Roller Chain Wear-Indicating Gauges, Chain Wear Gauges with Plastic Case.
    No. of
    Gauges
    For Roller Chain
    Trade No.
    Material
    Includes
    Each
    For Single-, Double-, and Triple-Strand ANSI Roller Chain
    535, 40, 50, 60, 80SteelChain Indentification Tool5576N34000000000
     
    For Single-, Double-, and Triple-Strand ISO Roller Chain
    506B, 08B, 10B, 12B, 16BSteelChain Indentification Tool5576N3500000000
     

    ANSI Roller Chain Wear-Indicating Rulers

    Image of Product. Front orientation. Chain Wear Gauges. ANSI Roller Chain Wear-Indicating Rulers.
    Place this plastic ruler on links to measure chain wear.
    Overall
    For Roller Chain Trade No.
    Lg.
    Wd.
    Material
    Each
    For Single- and Double-Strand ANSI Roller Chain
    40, 41, 50, 60, 80, 100, 120, 140, 160, 180, 200, 240, 40-2, 50-2, 60-2, 80-2, 100-2, 120-2, 140-2, 160-2, 180-2, 200-2, 240-215"2 5/8"Plastic2370K400000
     

    ANSI Roller Chain Wear-Indicating Inserts

    Image of Product. Front orientation. Chain Wear Gauges. ANSI Roller Chain Wear-Indicating Inserts.
    Place these steel inserts between two roller links. If they can be inserted past your ANSI number, the chain is worn out.
    Overall
    For Roller Chain Trade No.
    Lg.
    Wd.
    Material
    Each
    For Single- and Double-Strand ANSI Roller Chain
    35, 40, 41, 50, 60, 80, 100, 35-2, 40-2, 50-2, 60-2, 80-2, 100-28 3/4"5/8"Steel2370K20000000
    80, 100, 120, 140, 160, 180, 200, 240, 80-2, 100-2, 120-2, 140-2, 160-2, 180-2, 200-2, 240-218"1 1/2"Steel2370K3000000
     

    Plug Gauge Sets

    Keep dozens of plug gauges on hand to check a range of hole sizes. You’ll often hear them called pin gauges. Use them to measure hole size and depth with precise go/no-go tests, check hole location and distance, and set micrometers. Sets include a manufacturer's certificate of accuracy to certify diameters are within tolerance. Gauges are tool steel, so they’re strong, hard, and resist wear.
    If a go gauge can enter the hole and a no-go gauge is unable to enter, the hole is within tolerance.
    Choose a class based on the level of precision you need—the smaller the tolerance, the greater the accuracy. Classes are based on ASME standard B89.1.5, which states diameter won’t vary more than the listed plug gauge tolerance.
    Case
    Image of Product. Front orientation. Plug Gauges. Plug Gauge Sets, Case.
    Go Gauges—Go gauges check the minimum hole diameter.
    No-Go Gauges—No-go gauges check the maximum hole diameter.
    Class ZZ Gauge—Class ZZ gauges are ideal for quick checks that don't require extreme precision.
    Black-Oxide Tool Steel—Black-oxide tool steel gauges show wear patterns, so you know when to calibrate or replace them.
    Plug Gauge Size
    Increment
    No. of
    Pieces
    Lg.
    Surface Smoothness,
    RMS, μin
    Material
    Plug Gauge Size
    Tolerance
    Specs. Met
    Each
    Go Gauges
     
    Class ZZ Gauge
    0.0110" to 0.0600"0.001"502"10Black-Oxide Tool Steel0" to 0.0002"ASME B89.1.52327A11000000
    0.0610" to 0.2500"0.001"1902"10Black-Oxide Tool Steel0" to 0.0002"ASME B89.1.52327A12000000
     
    No-Go Gauges
     
    Class ZZ Gauge
    0.0110" to 0.0600"0.001"502"10Black-Oxide Tool Steel-0.0002" to 0"ASME B89.1.52327A2100000
    0.0610" to 0.2500"0.001"1902"10Black-Oxide Tool Steel-0.0002" to 0"ASME B89.1.52327A22000000
     

    Wear Gauges for Grade 80 and Grade 100 Chain

    Image of Product. Front orientation. Chain Wear Gauges. Wear Gauges for Grade 80 and Grade 100 Chain.
    Gauge measures the maximum allowable wear tolerances on links of Grade 80 or Grade 100 steel chain, as required by OSHA. If the gauge can be inserted over any part of the link, the chain should be taken out of service.
    For Straight-Link Chain Trade Size
    For Mfr. Model
    Each
     
    For Grade 80 and Grade 100 Chain
    9/32", 3/8", 1/2", 5/8", 3/4", 7/8", 1"L8, L103831T411000000
    9/32", 3/8", 1/2", 5/8", 3/4", 7/8", 1"P8, P10, H29, KWB3831T41200000
     
    For Grade 100 Chain
    9/32", 3/8", 1/2", 5/8", 3/4", 7/8", 1"C103831T3800000
    9/32", 3/8", 1/2", 5/8", 3/4", 7/8", 1"PW, PWA3831T41300000
     
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