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HEX CAPSCREW
CARRIAGE BOLT
0
@
@
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PLAIN WASHER
LOCKWASHER NUT
HEX
CAPSCREW
IDENTlFlCATlON
Shown below are actual size heads for standard screw sizes.
Example: a
l/4
screw has 7/16 head and thus requires a 7/16
wrench. To measure length, use the scale below.
00000
3lV
Head
5/s”
Head
screw with
screw with
l/2” SD. 7ll6’S.D.
9/16”
Head l/2” Head
7/l
6”
Head
screw with screw with
screw with
318”
SD.
5/16”
SD.
114”
S.D.
WASHER AND NUT IDENTIFICATION
Place the washer or nut on the above scale to
determine the inside diameter. The actual inside
diameter can vary
1116
inch. Use the scale for
comparison.
STANDARD
FASTENER
IDENTIFICATION
CHART
Hardware sizes given in the
illustrations throughout this
manual.
If a washer or nut is identified as
“washer, i/2” or “nut, i/2”, this
means the inside diameter is
l/2
inch
If a screw is identified as “screw,
i/2
x
2”.
this means the shaft
diameter is
l/2
inch and the
shaft of the screw is 2 inches
long. If a screw is identified as
“screw,
i/2
-
16 x
2”,
the number
“16” means that the screw has
16 threads per inch.
SAMPLE: SCREW IDENTIFICATION
SAMPLE: NUT IDENTIFICATION
Nut,
l/2
Inside
Diameter