Thread Ring Gauge After Plating

After plating about 40 of studs at the short end either strip out when the nut is applied or strip the nut itself out.

Thread ring gauge after plating.

Parts are 2 inches long with 1 inch hex between the 2 10 32 threaded ends. For external threads class 6e may be used as a pre plating condition for 6g after plating. Once they pass the inspection they can be approved for shipment. If there is an external thread on the plated component after cnc processing the pre plated ring gauge inspection will be necessary.

Class 6g may also be used as a pre plating condition for 4h after plating. To determine pre plating dimensions for thread plug gages. Increase the major diameter of the go thread plug by half the maximum plating and increase the no go thread plug major diameter by half the minimum plating. One threaded end is 1 4 inch and the other 3 4 inch.

After plating the internal threads need to pass the inspections of a standard m13 2 0 3 6h plug gauge. Example for thread plug gage. Before plating appropriate sample size passed qc ring gauge inspection. For internal threads class 6g may be used as a pre plating condition for 6h after plating.

Add the minimum plating thickness to the p d. Of the no go thread plug gage. Plating of 0002 0003 allowance per side multiple x 4 0003 x 4 0012 max.