MIL-DTL-8878L
4.6.6 Bending. Turnbuckle parts shall be tested for bending as follows:
4.6.6.1 Turnbuckle ends. Sample turnbuckle ends that pass the breaking strength test
(see 4.6.4) shall be held in a square-nosed vise and the shank bent through an angle of 90
degrees. There shall be no evidence of failure or cracking when inspected.
4.6.6.2 Locking clip. Locking clip must withstand straightening with the use of pliers.
The various formed radii shall be straightened so that the sample becomes approximately a
straight length of wire. This is to insure that brittleness has not been induced in the formed areas
of the clip. There shall be no evidence of failure (break) or cracking.
4.6.7 Hardness. Hardness testing shall be performed on the outer surface of the brass
turnbuckle body in accordance with ASTM E140.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as
specified in the contract or order (see 6.2). When packaging of material is to be performed by
DoD or in-house contractor personnel, these personnel need to contact the responsible packaging
activity to ascertain packaging requirements. Packaging requirements are maintained by the
Inventory Control Point's packaging activities within the Military Service or Defense Agency, or
within the military service's system commands. Packaging data retrieval is available from the
managing Military Department's or Defense Agency's automated packaging files, CD-ROM
products, or by contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful,
but is not mandatory.)
6.1 Intended use. Turnbuckles and component parts are intended for use in the
construction of aircraft and aircraft accessories.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of this specification.
b.
Name of part.
c.
Part number.
d.
Packaging requirements (see 5.1).
e.
Passivation method, if specific method required (see 3.5.1.2)
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