Bulk 1/2"-20 Button Head Socket Cap Screws – Alloy Steel, Black Oxide MB1386 0990″) Thread Size #3-48 UNC

0990″) Thread Size #3-48 UNC (Coarse Thread) Drive Size 1/16″ Hex (Allen) Head Type 82° Flat Head Socket Cap Screw (FHCS) Material Alloy Steel Finish Thermal Black Oxide (mild protective layer) Standards ASME B18

and is top-coated with a factory dry-film wax that lowers driving torque and adds a second barrier against corrosion

Cross-Reference: SAE J476 Type F / IFI 136

Depend on Monster Bolts for USA-made 3/8"-16 18-8 stainless socket head cap screws

Select your preferred length above and click "Add to Cart" to get dependable UNF hardware

Bulk 1/2"-20 Button Head Socket Cap Screws – Alloy Steel, Black Oxide MB1386 0990″) Thread Size #3-48 UNCMonster Overview: Fix your project right the first time with Bulk 1 2 20 Button Head Socket Cap Screws from Monster Bolts. These high strength fasteners are precision made from ASTM A574 Alloy Steel and finished with a thermal black oxide + oil coating for a professional black appearance and mild corrosion protection. The fine thread (UNF) design allows for greater tensile strength and better resistance to vibration loosening, making these screws