Bulk #4-40 Phillips Flat-Undercut Thread-Cutting Screws — Type F, Black-Oxide Steel Length:10000 Qty - 4-40 x 1/4" Corrosion-Resistant 18-8 SS: Classic austenitic

Corrosion-Resistant 18-8 SS: Classic austenitic stainless withstands rust in most environments

Smooth Washer-Bearing Surface: Ensures even load distribution and reduces the risk of loosening under dynamic loads

Finish: Zinc Yellow CR+3 for corrosion resistance and high visibility

dock plates & OEM fabrication where thin sheet and flush fit meet

Grade: Grade 5

Bulk #4-40 Phillips Flat-Undercut Thread-Cutting Screws — Type F, Black-Oxide Steel Length:10000 Qty - 4-40 x 1/4" Corrosion-Resistant 18-8 SS: Classic austeniticMonster Overview: Need full thread grip yet a perfectly flush head in ultra thin sheet metal or shallow countersinks? Our #4 40 Phillips Flat Undercut Thread Cutting Screws trim away most of the 82 cone, giving you maximum thread engagement without head rise. Heat treated carbon steel wears a durable black oxide conversion coat, oil sealed and factory dry waxed for ultra low drive torque. The Type F fluted point taps clean female threads in a pre