PS Magazine - OCTOBER 1984
PS, The Preventative Maintenance Monthly
ISSUE 383
OCTOBER 1984
Ground Equipment .
.±
Every hex head steel capscrew has
a Tle to tell-and eve1 mechanic needs
to listen.
±hat tale is how strong the capscrew
is² With that information, you can tell
the grade oF the capscrew and how
much torque it can handle.
Capscrews that are measured in inch³
es speak in dashes. ±he dashes on the
head tell you the Socie´ oF Automotive
Engineers (SAE) grade. ±here are
3
grades that are commonly used²
No dashes
=
SAE Grade 2
o
O
± dashes
=
SAE Grade 5
±²
±²'
DIAMETER/
TORQUE LB-FT
THREADS
NO DASHES
PER INCH
(GRADE
2)
3-5
-²:.³´µ
_±² M³
,
:³1´
7-11
´µ ¶
14-18
15-19
23²28
23-28
32-3 7
34-41
46-5 6
47-5 7
62-72
67-77
10 6-116
115-125
165-175
178-188
³´µ25 1-2¶1
255-265
45 1-461
488-498
·27-737
816-826
6-8
8-10
13-17
14-19
26-3 1
30¸35
44-49
44-54
65- 75
73-83
10 0-1¹0
10 7-117
140-15 0
153-163
260-2º0
268-278
385-395
424-434
580-590
585¸634
1070-1120
1211¸1261
1899-1949
2144-2194
The first sc±ew of each diamete²s ³nifled Coarse th±eads, an´he second
is Unified Fine th±eads.
OCT 84
5
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