Bulk #4-40 x 1/4" Pan Head Phillips Thread Rolling Screws – Zinc CR+3 w/ Wax – Monster Bolts IEX-MIGR5 Why Choose External Tooth K-Lock

Why Choose External Tooth K-Lock Hex Locknuts

Screws are fully threaded—simply pick your required length from the drop-down above

Manufactured from high-strength alloy steel and coated in a thermal black oxide finish

Reduced Driving Torque: Multi-flute design minimizes binding and galling

and machine shops

Bulk #4-40 x 1/4" Pan Head Phillips Thread Rolling Screws – Zinc CR+3 w/ Wax – Monster Bolts IEX-MIGR5 Why Choose External Tooth K-LockMonster Overview: Fix your project right the first time with Bulk #4 40 x 1 4" Pan Head Phillips Thread Rolling Screws from Monster Bolts. These fasteners use a thread rolling (non cutting) design that cold forms internal threads rather than cutting them, resulting in stronger thread engagement and improved resistance to loosening. The pan head design provides a low profile bearing surface ideal for thin materials, small assemblies, and precision