FAQ

FASTENERS
Head Types
HOW TO SELECT YOUR PRODUCT . . .
HEX FLANGE: A type of bolt head featuring a 1-piece
hex washer head with a at bearing surface. The ange
eliminates the need for a at washer and compensates
for a misaligned hole.
PAN HEAD: Provides a low large diameter head, with
high outer edge along the outer periphery of the
head where driving action is most eective for high
tightening torques. For general applications.
MODIFIED TRUSS: Has a low rounded top with a at
hearing surface greater in area than a round-head
screw of the same nominal size.
CURVED HEAD: Contains no drive, and a square neck allowing
for engagement in the wood surface from beneath the head.
Tightening is done by installing the nut on the threads until it
engages the rear surface of the material being joined.
BINDER HEAD: Features a 10% larger bearing surface
than pan heads and may have an undercut on the bearing
surface near the shank.
PANCAKE HEAD: Similar to the wafer head but without
the cone-shaped bearing surface. Provides an extremely
low prole, and a nearly ush surface nish.
ROUND HEAD: General purpose head with high crown
and deep recess. For general applications and where
fastening material is too thin to allow counter sinking.
WAFER HEAD: A countersunk head with a at top surface
and a cone-shaped bearing surface. Provides a larger
bearing surface and ush t in wood and softer materials.
THUMB HEAD: A tall head and ridged or knurled sides,
or a at vertical head, intended to be tightened and
loosened by hand.
DOWEL SCREW: Dowel screws have wood screw threads on
either end. Generally used in furniture applications, or when
joining two pieces of wood together.
HEX HEAD: Standard type of wrench-applied hex head,
characterized by clean, sharp corners trimmed to close
tolerances. For general applications.
TRUSS HEAD: A low large diameter head used to cover larger
diameter holes. Preferred in applications where minimal clearance
exists above the head. Provides a trim finished appearance.
HEX WASHER HEAD: Designed with an indented top
surface, six at sides with an all in one at washer that
provides a at bearing surface.
SQUARE HEAD: A square shaped external wrenching head,
oers a large bearing area for positive gripping. Used for
aesthetics or in restoration to maintain original appearance.
FRAMER:
Features a mild bevel toward the base of the
screw head & usually has serrations on the underside
to grip the mating surface. Used in metal framing,
tracking, and light gauge metal studs.
BUGLE HEAD: Possesses a smooth progression from the
shank to the angle of the head. Used to attach drywall
to wood or metal studs.
BUTTON HEAD: A dome shaped low-prole head.
Oers a wide bearing surface with a smooth nished
appearance.
FILLISTER HEAD: Designed with a smaller diameter
than the round head, the Fillister is higher with a
correspondingly deeper slot. Can be shaved & drilled.
KNURLED HEAD: Knurled head provides a positive
grip for nger tightening in light clamping or lighting
applications.
PLOW BOLT: Two types, with at heads, and domed head.
Both types have a countersunk head and square neck to
prevent turning when the nut is tightened or removed.
Primarily used in heavy equipment.
ELEVATOR BOLT: Features a square neck which resists
turning when the nut is tightened or removed, the large
head provides a greater bearing surface for soft materials.
Used often in conveyor systems.
SOCKET HEAD: High-strength tension fasteners with
a knurled head circumference designed for clamping
assemblies. Used in machinery, automotive and
xturing applications.
OVAL HEAD:
A countersunk head with a rounded top
surface for attractiveness of design. Commonly used when
a more decorative nished look is desired.
CHEESE HEAD: A type of head that is very thick with
a smaller bearing surface allowing for a deep slot for
increased driving power.
HANGER BOLT: Contains wood threads on one end and
machine threads on the other end of the bolt. These
fasteners are generally used in furniture. An example of
their use is fastening a peg leg to an ottoman.
FLAT HEAD: To be used where nished surfaces require
a ush fastening unit. Used in all applications where a
ush surface nish is desired.
FLAT UNDERCUT: A countersunk head with a at
top surface with a 100 degree angle providing a at
bearing surface on the underside of the head. Used in all
applications where a ush surface nish is desired.
TRIM HEAD: Constructed with a smaller prole than the
Bugle Head, trim heads are designed for use in nishing
work where visibility of the screw is not desired.