HEADLOK HEAVY DUTY FLATHEAD FASTENER - 4-1/2", 12PKFastenMaster HeadLOK structural wood screws eliminate the need for pre-drilling and deliver higher design shear strength than 3/8" lag screws. The large wafer head increases pull-through resistance and eliminates the need for washers.
- 4-1/2" length with 2" thread length
- No. 14 gauge, 0.190" shank diameter
- Large wafer head (0.625" diameter) with chamfer
- SpiderDrive recess for maximum bit engagement
- Sharp gimlet point installs fast in wood and OSB
- CR-10 corrosion-resistant coating - ACQ approved
- ICC-ES ESR-1078 evaluated, Factory Mutual Approved
- 12-count package with free drive bit included
Ideal for deck framing, ledger boards, stair stringers, fences, headers, and structural panel attachment.