Great Planes Button Head Screws feature a rust resistant zinc alloy plating. This plating resists corrosion keeping the screws in top notch condition year after year. The screws come in many sizes for most modeling applications. FEATURES: The screws feature a special zinc plating that resist corrosion INCLUDES: The screws come 8 per package and come in a special reusable plastic Parts Pak that can hang neatly on a peg board or in a field box. SPECS: #4 x 1" button head sheet metal screw REQUIRES: 1/16" hex wrench (GPMR8006) KPM 10/25/93 ir/jl