Bulk #4-40 Phillips Flat-Undercut Thread-Cutting Screws — Type F, Bright-Zinc Steel ISO 4035 DIN 934 Class 10 Hex

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

meeting SAE’s highest grade specifications

50 stainless steel flat socket cap screws in bulk

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

Q: What materials are these hex keys made from

Bulk #4-40 Phillips Flat-Undercut Thread-Cutting Screws — Type F, Bright-Zinc Steel ISO 4035 DIN 934 Class 10 HexMonster 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