Bulk #6-20 Type B Slotted Indent Hex Washer Head Self-Tapping Screws | Zinc CR+3 (Type F / 23 / 25) Not recommended for hollow block

Not recommended for hollow block or brick applications

Precision Drive: 2

Built from high-strength alloy steel and finished with a thermal black oxide coating

treated with a deep black-oxide conversion finish for low-glare protection

Bulk #6-20 Type B Slotted Indent Hex Washer Head Self-Tapping Screws | Zinc CR+3 (Type F / 23 / 25) Not recommended for hollow blockMonster Overview: Fix your project right the first time with Bulk #6 20 Slotted Indent Hex Washer Head Type B Self Tapping Screws from Monster Bolts. Finished with a zinc CR+3 coating, these screws provide dependable corrosion resistance for general purpose indoor and light outdoor applications. Type B self tapping threads feature a more uniform, machine screw like profile than Type A, making them ideal for controlled thread forming in pre punched or