DLC Coated Thread Ring Gauges And Plug Gauges
Code: 4120/4121/4130/4131/4129/4139
The DLC coating has the following advantages: ─ High hardness, extremely wear resistance; ─ Low friction coefficient; ─ Corrosion resistance
Plug gauges: GO is coated, NO-GO is not; Ring gauges: GO is coated, NO-GO is not
The following thread ring gauges and plug gauges are available with DLC coating: Metric fine thread ring gauges and plug gauges (4139, 4129 series); Metric thread ring gauges and plug gauges (4130, 4120 series); American standard thread ring gauges and plug gauges (4131, 4121 series)
Specification
| Code | Material | Thread type |
|---|---|---|
| 4139 series | alloy+DLC | M |
| 4129 series | alloy+DLC | M |
| 4130 series | alloy+DLC | M |
| 4120 series | alloy+DLC | M |
| 4131 series | alloy+DLC | M |
| 4121 series | alloy+DLC | M |
FAQ
What is the hardness of the DLC coating?
The diamond-like carbon (DLC) coating has a hardness of approximately 6000 HV.
How does DLC coating affect gauge service life?
The coating provides high wear resistance, giving DLC-coated gauges a service life of 3–10 times that of uncoated gauges.
What other benefits does the DLC coating provide?
The coating has a low friction coefficient of approximately 0.15 for smoother gauging, along with strong corrosion resistance.
Is the DLC coating applied to both the GO and NO-GO sides?
DLC coating is recommended for the GO side as standard because it wears more quickly. DLC coating for the NO-GO side is also available on request.