Overall 2 1/2" (6.3mm); Body Dia. .250" (6.3mm); Pilot Dia. .165" (4.2mm); Pilot Length 1/8" (3.2mm); 90deg Shoulder. Use Drill No. 19 for Pilot Hole. Mfg: Brownells
Brownells Fillister 8-40 Sight Screw Counterbore
$25.99
High-Speed; For Popular Sight Screws; Made To Our Exact Spec For Most Sight Base Screws
