This Winchester manufactured 7 5/8" long butt stock bolt has threads that measure 6 5/8" from end to end (non-threaded pointed tips not included) and is for the Sears, Roebuck & Co. / Ted Williams model 3T No. 273.528111 semi-auto rimfire rifle and is in very good condition with light wear. (file photo)

Note: Sears, Roebuck & Co. / Ted Williams model 3T semi-auto rimfire rifles with the following serial numbers have been observed with this part: R151775, R239978, R344002 & R376862