BW00S04012510 4-40 Saddle Washer Fastener

BW00S04012510 is a #4-40 screw specified for use with a saddle washer. When planning a replacement, start by matching the exact identifier and thread callout. Check the mating thread, washer arrangement, engagement, head clearance, and nearby hardware in the assembly. Compare the installed screw directly before making a substitution. Do not derive length, material, finish, head style, or mechanical strength from the part number. Match those details to the original assembly requirements before installation. Keep the complete identifier on service records and purchasing documents so the hardware is not confused with a similar #4-40 fastener. For repair work, verify mechanical fit before final installation and tightening. Request a quote for BW00S04012510.