Bulk #4-40 Phillips Flat-Undercut Thread-Cutting Screws — Type F, Bright-Zinc Steel ISO 4035 Head Style: Pan head provides

Head Style: Pan head provides wide contact and low-profile appearance

Head / Drive: Unslotted indent hex-washer (5⁄16″ A/F) — smooth top forge

Improved Tuning Stability: Locking nuts clamp strings in place to prevent slippage

Bulk 3/8-16 Slotted Indented Hex-Washer Head Taptite Alternative Thread-Rolling Screws from Monster Bolts give you true job-site flexibility—drive them with a 9/16″ nut-driver for speed or a big flat-blade screwdriver when power tools aren’t handy

DIN 934 Class 10 Hex Nuts are designed for strength and reliability

Bulk #4-40 Phillips Flat-Undercut Thread-Cutting Screws — Type F, Bright-Zinc Steel ISO 4035 Head Style: Pan head providesMonster Overview: When standard countersinks are too shallow or sheet metal is wafer thin, choose #4 40 Phillips Flat Undercut Thread Cutting Screws. The undercut head trims most of the 82 cone, giving you maximum thread engagement while finishing perfectly flush in sheet as thin as 0. 040. Heat treated carbon steel sports a brilliant bright zinc electro plate, is hydrogen relief baked to banish embrittlement, and topped with a factory dry wax film