Bulk 1/4"-20 Indented Hex Washer Head Unslotted Thread Rolling Screws – Zinc CR+3 w/ Wax – Monster Bolts 440138 while #8-20 is often used

while #8-20 is often used for thicker material and higher thread engagement

Anchor Type: Hollow Wall Anchor

Length: Please select from menu above

Non-Serrated Flange: Allows for smoother fastening and prevents damage to mating surfaces

Bulk 1/4"-20 Indented Hex Washer Head Unslotted Thread Rolling Screws – Zinc CR+3 w/ Wax – Monster Bolts 440138 while #8-20 is often usedMonster Overview: Fix your project right the first time with Bulk 1 4" 20 Indented Hex Washer Head Unslotted Thread Rolling Screws from Monster Bolts. These fasteners use a thread rolling (non cutting) design that cold forms internal threads rather than cutting them, producing stronger thread engagement and improved fatigue resistance. The hex washer head (HWH) with integral indentation provides excellent load distribution and resistance to pull