Bulk #8-18 Indented Hex Washer Head Slotted Thread Cutting Screws (Type 25 / BT) – Zinc CR+3 – Monster Bolts 440140 1900″) Thread Size #10-32 UNF

1900″) Thread Size #10-32 UNF (Fine Thread) Drive Size 1/8″ Hex (Allen) Head Type 82° Flat Head Socket Cap Screw (FHCS) Material Alloy Steel Finish Thermal Black Oxide (mild protective layer) Standards ASME B18

The dual-drive head pairs a standard 7/16″ across-flats hex for high-torque installs with a full-width straight slot for flat-blade access

Industries such as construction

All lengths are fully threaded—simply choose the size you need from the menu above

The internal teeth of these lock washers bite into the fastener head and bearing surface

Bulk #8-18 Indented Hex Washer Head Slotted Thread Cutting Screws (Type 25 / BT) – Zinc CR+3 – Monster Bolts 440140 1900″) Thread Size #10-32 UNFMonster Overview: Fix your project right the first time with Bulk #8 18 Indented Hex Washer Head Slotted Thread Cutting Screws (Type 25 BT) from Monster Bolts. These fasteners feature a Type 25 (BT) drilling and thread cutting point, designed to drill, tap, and fasten in a single operationmaking them well suited for steel and thicker materials where dependable thread formation matters. The hex washer head (HWH) with integral indentation provides