For
Accurate Measurement of Bolt Tension In Short Structural Fasteners
 Two
developments in construction practice have created a demand for
the Model MS bolt tension calibrator: thinner sections of
structural steel and the use of tension-control bolts. Designed to
accept shorter grip length bolts, the Model MS provides all the
features and capabilities of our standard Model M calibrator.
Whether calibrating power wrenches or testing
fasteners, you need no special training, no additional equipment.
Simply clamp the calibrator to a beam or column and insert your
fastener. Tightening it gives a direct dial pressure reading
equivalent to the tension created in the fastener - guaranteed
accurate within 2%.
For
Economical Quality Assurance
With a Skidmore-Wilhelm Model MS, you can
accurately simulate joint conditions, then transfer your
tightening procedure to the joint itself.
Result:
consistent tightening to bolt tension specifications.
The Research Council on Structural Connections
recommends that a tension- measuring device such as the Model MS
be available at every job site.* Obsolete torque checking methods
will not let you meet approved bolt tension specifications.
Avoid Costly Rework and
Reinspection
How do you give the best evidence of properly
installed fasteners? First demonstrate with the calibrator that
your tightening procedures produce proper bolt tension. Then
consistently apply these procedures to the job itself.
Skidmore-Wilhelm Bolt Tension Calibrators let you
build the inspection into your selected bolt tightening procedure.
Proof of correct bolt tightening is right on the Model MS
calibrator dial.
The
Model MS Bolt Tension Calibrator Allows You To Verify:
| 1. That your fasteners meet minimum bolt tension
specifications
2. That your impact wrenches are properly
calibrated.
3. That your tension-control fasteners sheer off
at the correct tension.
4. That your bolting crew understands how to
achieve proper tension in all types of fasteners.
5. That you have the right installation tools
and equipment.
And with the Model MS you can check power wrench
performance daily.
The
model MS provides a grip lenght as short as 1-1/8" for bolts
with the following specifications :
|
Bolt Diameter |
Minimum Bolt
length |
| 5/8" |
2.00" |
| 3/4" |
2.00" |
| 7/8" |
2.25" |
| 1" |
2.50" |
|
* Research Council On Structural Connections,
"Specification for Structural Joints Using ASTM A325 or A490
Bolts."
|
