TM 9-243
TYPES AND USES
Parts of a hammer are as follows:
1 Claw
4 N e c k
2 E y e
5 Striking face
3 Handle
6 Cheek
CARPENTER’S HAMMER
The carpenter’s hammer is used for driving and pulling
nails and tapping wood chisels.
There are two types of claws,
CURVED CLAW
STRAIGHT CLAW
CAUTION
Never use a claw hammer on a steel
punch or on hardened steel-cut or
masonry nails. The face is too soft and
could chip.
Be sure to check for a loose head or a
cracked handle before use.
And there are two types of striking faces.
FLAT FACE
BELL FACE
N O T E
When using a flat-faced hammer to drive a
nail, the nail head must be square with the
face of the hammer at time of impact. The
bell-faced hammer offers a uniform face
to the nail head even though the hammer
face is slightly tipped at time of impact.
Hammers come in 7, 13, 16 and 20 ounce sizes. Your
selection should be based upon the following: flat face
for rough work, or bell face for finishing work where you
don’t want dents in the finish.
The straight claw is generally used for ripping and fram-
ing. The curved claw is preferred for general use.
MACHINIST’S PEEN HAMMER
All machinists peen hammers have a flat striking face
on one end of the head for striking punches and chisels.
The other end of the head can be one of the following:
A ball peen hammer is used for forming soft metal,
peening rivet heads, and striking metal in out-of-the-way
places.
21-2
