TABLE 1

 

Screw and Bolt HEADS, DRIVES, and BODY TYPES
Image
Type
Driver
Image
Type
Driver
PHILLIP HEAD

Standard Phillips
Screwdriver
SLOTTED HEAD
Standard Flat
Blade Screwdriver
HEX CAP HEAD

Standard Wrench or Socket Drive

MIL TYPE

INTERNAL HEX SOCKET HEAD

Hex Wrench (Allen)
PAN HEAD

 

May have Slot, Phillip, Torx, or Pozidrive Drive
TRUSS HEAD
May have Slot or Phillip Drive
FLAT HEAD

May have Slot, Phillip, Internal Hex , Torx, or Pozidrive Drive

ROUND HEAD
May have Slot, Phillip, Internal Hex , Torx, or Pozidrive Drive

SET SCREW

with HEX DRIVE

Drive with standard
Allen wrench

FILLISTER HEAD

with example of

SAFETY WIRE HOLE
May have Slot, Phillip, Internal Hex , Torx, or Pozidrive Drive

MIL TYPE

CAP SCREW
SOCKET HEAD

 

Drive with standard
Allen wrench

MIL TYPE

DOUBLE HEX or
12 POINT DRIVE
with FLANGE
Fits standard sockets

MIL TYPE

INTERNAL WRENCHING

Drive with standard
Allen wrench

MIL TYPE

CRUCIFORM
Not very common. Requires a Special Driver
SHOULDER BOLT

Note Shoulder - often used as a pivot point