Round
general purpose (see Pan head) |
Pan
recommended to replace Round, Truss, or Binder heads |
Oval Undercut
similar to Flat Undercut with rounded surface |
Square
bolts only large bearing surface for wrench tightening |
Oval
same as Flat head with rounded surface for appearance |
Hex Washer
same as Hexagon with washer section |
Binding
under-cut unless other-wise specified not recommended for
phillips recess |
Flat 82º
used where flush surface is desired |
Square
(Set Screw)
recommended for high torque assembly |
Flat Trim
same as 82º except diameter and countersink depth reduced |
Flat Undercut
standard 82º with lower 1/3 counter sink removed for short
screws |
Round Washer
same as round head with integral washer for bearing surface |
Square
Counter sink
for use on plow bolts |
Fillister
deep slot used for counterbored holes |
Flat Fillister
same as standard Fillister without oval top |
Hexagon
manufactured as trim hex or indented hex |
Truss
similar to Round head with larger diameter (see Pan Head) |
Round
Counter sink
bolts only similar to Flat head with no driving recess |
Flat 100º
larger head than 82º used for thin metal or soft plastic |
Oval Trim
same as Oval smaller diameter and countersink |
Combo Pan
combination phillips and slot both functional |
STANDARD
FASTENERS - A TO Z
Tapping Screw Points
Head Styles (available
in Phillips, Hex, or Slotted Drives)