#4-40 Screws, 100Pcs #4-40 x 1/4 Inch Flat Head Socket Cap Machine Screws, 304 Stainless Steel 18-8 Countersunk Bolts, Black Zinc Finish, Full Thread (with Hex Spanner)
304 Stainless Steel: This #4-40 screws are made of stainless steel 304 with black zinc plating, passing 200h+ salt spray test, good corrosion and rust resistance, high strength, excellent mechanical properties, no deformation, offering longer service life.
Well Constructed: #4-40 machine screws are well finished with nice & clean threads,nice flat head, no spurs or stripping, true to size, add a professional look when completed
Easy to Use: BNUOK #4-40 stainless steel bolts with hex socket head that provides better torque transmission and more stable performance, flat countersunk head can be better embedded in the installation surface to ensure that the surface smooth.
Widely Used: #4-40 screws are suitable for printers, computers, instruments, lamps, bicycle repair and widely used in electronic products, communication equipment, machinery industry, office appliance, ship assembly.
Size & Quantity: You will get 100pcs #4-40 x 1/4 inch bolts, black, a hex spanner. We promise a 24-month warranty, if any question, please contact us.