MIL-DTL-40137F
4.3.3 End item critical dimension examination. The end item shall be examined for
conformance to the dimensions specified on the applicable standard. The lot size shall be
expressed in units of clevises of one type and part number only. The sample size shall not be
less than ten clevises, regardless of the lot size. Failure of any clevis to conform to any
dimension shall be cause for rejection of the lot.
4.3.4 End item testing. The end item shall be proof loaded as specified in 4.4.1 and
examined for conformance to the requirements in 3.6. The lot size shall be expressed in units of
clevises of one type and part number only. Failure of any clevis to conform to the requirements
in 3.6 shall be cause for rejection of the lot.
4.4 Methods of inspection.
4.4.1 Proof load test. The proof load specified on the applicable detail drawing, military
specification, or non-government standard (NGS) shall be applied for not less than 15 seconds in
the direction shown on the document. Any suitable tensile testing machine may be used. The
attachments to the clevis for proof loading shall be made as follows:
a. Attachment at pin end. Use a steel band of the appropriate thickness and width
approximately equal to the clevis mortise dimension.
b. Attachment at bow end. For a bow with a straight section at the top, use a steel band of
the thickness and a width approximately equal to the length of the straight section. For a bow with a
continuous curvature, use a steel band or bar of a width or diameter not greater than the clevis pin.
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 materiel 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 the 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. This specification is intended for use in rigging cargo and equipment
for air delivery.
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