MIL-DTL-81306B
3.4 Design and construction. The tool shall be hand operated and capable of applying
tiedown straps to their respective wire bundles. The tools shall consist of all components
required to attach the strap assembly to the bundle and sever the scrap end of the strap.
The tool shall be constructed to withstand stress, shock, vibration and any other conditions
incident to service use. The design shall provide for rigidity of parts and resistance to fatigue.
3.4.1 Frame. The frame of the tool shall be as specified in MS90387. The frame shall be
capable of withstanding the forces encountered during tightening and cutting of the tiedown
strap.
3.4.2 Gripping device. The gripping device shall be spring-loaded, contact the strap when
the handle is depressed and advance the strap a minimum of 3/16 of an inch with each stroke of
the handle. After installation of the strap around the wire bundle has been completed, the
gripping device shall return to its original position freely as the handle is opened.
3.4.3 Guidance. Provision shall be made to guide the strap into the working position in
the tool.
3.4.4 Spring return of handle. The handle of the tool shall return freely and immediately to
the fully opened position when released after the tension and cutting operation has been
completed. This action shall apply with the tool in any plane or position, with or without a
tiedown strap position in the tool.
3.5 Dimensions. The installation tool dimensions shall conform to MS90387.
3.6 Performance. The hand tools shall comply with all the test and inspection requirements
of this specification.
3.7 Workmanship. The installation tool, including all parts, shall be so constructed and
finished that it shall be free from all defects that may affect proper functioning in service. There
shall be no sharp edges, burrs, or other defects that are potential hazards to the operator of the
tool.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein, are
classified as follows:
a. Qualification inspection (see 4.2).
b. Conformance inspection (see 4.3).
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