Most commonly used as a saddle height screw on most US-spec bridges. Also used as a set screw for several other types of products.
Length FMS: 3/8"
Sold in packs of 12.
Tech's notes: "Screw and spring sizes/types are NOT standardized throughout the entire guitar industry. Don't just go by the product names. ALWAYS double check the specifications to ensure this is the correct part for your needs."