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Tightening of Non-Structural Bolts
For light or medium duty fastening, Curtis recommends using a general industry standard of tightening until snug and then
giving an additional one quarter turn of the tool as deemed reasonable for the application (i.e.: at the installer's discretion).
If torque values are required, the examples listed below are intended as a reasonable reference for use in the majority of
non-structural fastener applications such as: small diameter fasteners; bolts passing thru tubing, glass, plastic, nylon or
rubber washers, threaded inserts, etc.
If more than one application below applies, use the lower torque value.
FASTENER
SIZE:
#10
#10
M5
1/4"
1/4"
1/4"
1/4"
1/4"
5/16"
5/16"
5/16"
5/16"
5/16"
5/16"
3/8"
M12
FASTENER
WASHER
TYPE:
MATERIAL:
Machine Screws
Machine Screws
Set Screws
Cap Nut
Bolts
Bolts
Rubber
Bolts
Nylon / Plastic
Bolts
Bolts
Flat Head Bolts
Bolts
Rubber
Bolts
Nylon / Plastic
Ball Studs
Bolts
Bolts
Door Striker Pins
APPLICATION:
-
in Nylon P-Clamps
Strobe Light
-
(plastic base)
-
Wiper Arm
-
Windshield Wiper
Tubing
-
(5/8" to 3/4" wide)
-
-
Factory Installed
-
Threaded Inserts
-
Tubing (1" or wider)
Plastic Windshield
-
Hinge
-
-
-
-
Factory Installed
-
Threaded Inserts
-
Tubing
-
-
27 of 28
TORQUE
(INCH-POUNDS)
(±5)
20
35
20
20
132
60
72
132
60
79
120
150
150
240
120
120
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