Uberti hand spring and plunger retaining socket head screw

[Tascosa Joe]

What size Allen wrench does the socket head spring retaining screw require.  For a newer Uberti SAA.

[45 Dragoon]

 Can't think of it but I only use it to REMOVE it. Then you toss it and there you go .  .  .  no more  problems!! They're too small anyway and I always install a larger diameter spring and "pushrod" .  .  .  that includes Rugers too.

Mike

[Abilene]

Never saw one with a screw like that, only tiny slotted screws.  If they changed to a tiny socket screw it's probably metric.