Thread Ring Gauge After Plating

Limits for 6g before coating or plating.

Thread ring gauge after plating. Class 6g may also. A thread ring gauge is designed to check the correctness of the thread to include thread depth and pitch diameter to the given pitch tpi. Then subtract the minimum plating from the p d. Before plate or pre plate thread plug gauges when you need to leave extra room for plating.

Ideally the screw or. Of the no go thread ring gage. For acceptance of the part the go ring gauge should pass through the entire length of the screw without too much use of force. Plating of 0002 0003 allowance per side multiple x 4 0003 x 4.

For the minors of thread rings decrease the minor diameter on the go thread ring by using half the max. After plating the internal threads need to pass the inspections of a standard m13 2 0 3 6h plug gauge. Parts are 2 inches long with 1 inch hex between the 2 10 32 threaded ends. Whether you need a specialty taperlock plug gauge aka work plug gauge or a specialty trilock plug gauge we can make what you need and turn around the order quickly.

It may be a good idea to supply the plating facility with these gages so they can confirm that their plating process is correct and deliver back parts that are in tolerance. If there is an external thread on the plated component after cnc processing the pre plated ring gauge inspection will be necessary. After plating about 40 of studs at the short end either strip out when the nut is applied or strip the nut itself out. For the minor diameter reduce the go ring minor diameter by half the maximum plating and reduce the no go.

For thread ring gages subtract the max plating thickness from the p d. To determine pre plating dimensions for thread ring gages. Specialty thread ring gauges. For the not go ring subtract the min.

This means that the class 6g go and 6g nogo limits and gages must be used to inspect and accept the before coated or plated threads. Before plating appropriate sample size passed qc ring gauge inspection. Do you need a specialty thread ring gauge. The go and no go rings are normally separate pieces.

On not go thread rings decrease the minor diameter by using half the min. As a pre plating condition for 6h after plating. Example for thread ring gages. Bs 3643comprises two parts.

This can be confirmed with standard or after plate thread gages. Iso metric plug ring and caliper thread gauges gauges for testing iso metric screw threads to bs 3643 1981 and bs 919 pt 3 1968. Once they pass the inspection they can be approved for shipment. For the go ring subtract the max.

One threaded end is 1 4 inch and the other 3 4 inch. Of the go thread ring gage.