This Marlin manufactured stock (wrist) reinforcement screw is for the later manufactured model 990 semi-auto rimfire rifles which have a screw behind the synthetic trigger guard assembly manufactured some time during 1984 or later and is in very good condition with light wear.  This screw measures approx. 1.510 " long. (file photo)

NOTE: Firearms with the following years of manufacture and serial numbers have been observed with this part:

 1985: 15354511