A) Flat on top stabilizes
socket during installation
B) Higher hex provides
positive socket engagement
C) EPDM sealant assures
waterproof seal even under harsh conditions
D)
Special undercut entraps sealant even when driven at
angles
E) Standard Oxyseal IITM long-life coating
for added corrosion protection on carbon steel
fasteners
Flat-Top fasteners combine under-cut
hex washer heads with EPDM cut-tubular sealing washers. They are a
superior and cost-effective alternative to standard fasteners with metal
back washers.