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    7 Products

    Starrett Countersink Gauges

    Image of Product. With Cone Probe. Front orientation. ZoomedIn view. Contains Border. Countersink Gauges. Starrett Countersink Gauges, Cone.

    With Cone Probe

    Mate your fastener and countersink perfectly for a secure hold with these Starrett gauges. They are often used in vehicle and metal manufacturing to check the top diameter and countersink angle of a hole. When the conical probe touches the hole’s angled walls, the diameter will display on the dial. You can verify the countersink angle based on how snug the probe fits into the hole. Even when you lift the gauge out of the hole, your measurement will stay on the dial until you press the reset button.
    Choose a gauge with an angle that’s equal to the angle of the countersunk hole you’re trying to measure.
    Dial
    Distance
    Measured
    Accuracy
    Measuring
    Increments
    Probe
    Type
    Material
    Dial Indicator
    Size
    Dia.
    Face
    Color
    Contact Point
    Material
    Mfr. Model
    No.
    Each
    90° Angle Measured
    0.02" to 0.17"±0.0002"0.002"ConeSteelAGD Group 1
    		1 5/8"WhiteSteel688-1Z21125A3720000000
    0.16" to 0.36"±0.0002"0.002"ConeSteelAGD Group 1
    		1 5/8"WhiteSteel688-2Z21125A373000000
    0.36" to 0.56"±0.0002"0.002"ConeSteelAGD Group 1
    		1 5/8"WhiteSteel688-3Z21125A374000000
     

    Countersink Gauges

    Image of Specification. With Cone Probe. Front orientation. Contains Inset. Countersink Gauges. Countersink Gauges, Cone.

    With Cone Probe

    For a flush fit every time, these gauges ensure your fastener and countersink mate perfectly for a secure hold. These gauges are often used to verify the top diameter and angle of holes in precision assemblies. They’re preferred over chamfer gauges, which also measure diameter but don’t check countersink angle. When the conical probe touches the hole’s angled walls, the diameter will display on the dial.
    To verify the countersink angle, feel how snug the probe fits into the hole. You’ll also know the angle is incorrect when the reading for the top diameter is a different value than expected. Choose a gauge with an angle that matches that of your hole.
    Dial
    Distance
    Measured
    Accuracy
    Measuring
    Increments
    Probe
    Type
    Material
    Dial Indicator
    Size
    Dia.
    Face
    Color
    Contact Point
    Material
    Each
    90° Angle Measured
    0.02" to 0.17"±0.0005"0.002"ConePowder-Coated AluminumAGD Group 1
    		1 5/8"WhiteSteel8003N150000000
    0.16" to 0.36"±0.0005"0.002"ConePowder-Coated AluminumAGD Group 1
    		1 5/8"WhiteSteel8003N16000000
    0.36" to 0.56"±0.0005"0.002"ConePowder-Coated AluminumAGD Group 1
    		1 5/8"WhiteSteel8003N17000000
    0.56" to 0.78"±0.0005"0.002"ConePowder-Coated AluminumAGD Group 1
    		1 5/8"WhiteSteel8003N18000000
     
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