Tap-Flex thread-forming structural screws combine many features to allow easy installation and high performance in the field. Their E-Form thread profile roll forms strong threads into metal applications, providing resistance to loosening from vibration or thermal changes. They are dual hardened to Grade 5 specifications (ASTM A449) and coated with silver Stalgard GB finish, to prevent hydrogen embrittlement, galvanic reactions, and general corrosion.

1/2-13 x 1-1/2" Tap-Flex screws have a load-bearing length of .875".SKU: DFSESU410 $597.00