1/4" Slotted-Hex, #8 x 1/2" Vibration-Resistant Serrated-Flange Piercing Screws (SCREW-19)

Serrations under the head act as a brake to prevent over-tightening and damaging threads. Also known as needlepoint screws, they're designed with a pointed tip to pierce a starter hole in sheets up to 0.050" thick. The combination slotted hex head allows for a secure grip with a slotted screwdriver or 1/4" socket. Made from steel, zinc plating provides corrosion resistance in wet environments. Length is measured from under the flange. Head height includes the flange. This screw is commonly used to secure the combustion motor hub on: Enviro Regency VistaFlame Hudson River United States Stove Breckwell and Many More