MIL-DTL-2710C
4.5.2 Detachable link breaking load test. Samples for the break tests shall be tested for
breaking load. If, in normal production only, it is considered that the test equipment would be
endangered by a sudden break, it shall be considered acceptable if the detachable link is loaded
to the required breaking strength and maintained at load for 15 seconds. Samples used in first
article testing shall be tested to destruction. The break testing machine shall have been
calibrated within the 12 months previous to the breaking load test. The samples shall meet the
breaking load requirements of tables III and IV. Samples which break below the level specified
in tables III and IV shall cause rejection of the entire lot.
4.5.3 Detachable link proof test. Detachable links shall be proof tested by securing them
in a testing machine either singly or assembled into sections. The proof load testing machine
shall have been calibrated within the 12 months previous to the detachable link proof load test.
If there is a sign of fracture, including breaking or cracking, during the proof test, the detachable
link shall be rejected. Recording of the applied load shall be taken of all proof load tests during
both first article and conformance tests. Detachable links shall meet the requirements specified
in 3.13.
4.5.4 Tensile test. A tensile specimen shall be taken from the C-link and one coupling
plate (left or right). The tensile test shall be conducted with procedures using standard
specimens conforming to ASTM A370 (see 3.4, 4.2.1.2, and 4.3.1.5). If the tensile test fails to
meet the requirements of 3.4, but is within 3,000 lb/inē of the required tensile strength, a retest of
another specimen selected from the same sample will be permissible. The test specimens shall
meet the requirements of 3.4.
4.5.5 Brinell hardness test for taper pin. The Brinell hardness test shall be conducted in
accordance with ASTM A370. If the hardness of the taper pin surface fails to meet the minimum
hardness requirements of 3.6, the taper pin shall be rejected.
4.5.6 Brinell hardness test for C-link and coupling plates. The Brinell scale hardness of
the sample components (see 4.2.1.2) shall be conducted in accordance with ASTM A370. The
components failing to meet the minimum hardness requirements of 3.3 shall be rejected.
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 contacting the responsible packaging activity.
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