lug screw

lug screw

n
(Building) a small screw without a head
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The Stealth II has a short action with a one-piece aluminum trigger guard hinged floor plate assembly spanning 7 1/4 inches from the front recoil lug screw to the rear tang.
I would like to mention my rifle has a receiver dust cover attached via the exposed, straight-slotted lug screw. It is stamped sheet metal with a cutout for the bolt handle.
I replaced the original band screw on the front handguard with a one-inch swing swivel lug screw, being careful to remove some extra thread so it wouldn't screw in far enough to contact the barrel.