MIL-DTL-60283C
Inspection testing. The following tests shall be performed in accordance with the provision of
4.2.3
4.3.
4.2.3.1 Breakaway torque. Each assembly shall be subjected to the breakaway torque test of the
threaded joint between the cap and the chamber. Failure of any assembly to comply with the
requirements of 3.3 shall be cause for rejection of the assembly.
4.2.3.2 Residual magnetism. Each initiator shall be subjected to the test for excessive residual
magnetism as specified in 4.3.2. Failure on any initiator to comply with the requirement of 3.4 shall be
cause for rejection.
4.2.3.3 Firing pin release. The initiator pin of each subassembly, consisting of all parts except the
safety pin, cartridge and chamber, shall be subjected to the firing-pin release test. Failure of any
subassembly to comply with the requirements of 3.5 shall be cause for rejection of the subassembly.
4.2.3.4 Initiator pin security. The initiator pin of each subassembly, consisting of all parts except the
chamber and cartridge, shall be subjected to the initiator-pin security test. Failure of any subassembly to
comply with the requirements of 3.6 shall be cause for rejection of the subassembly
4.2.3.5 Functional tests. The following tests shall be performed by the Government.
4.2.3.5.1 Ballistics. Twenty-one units shall be tested to determine compliance with the requirements of
3.7. The units shall be temperature conditioned as provided in table II and 4.3.5.2. Failure of any unit to
comply with the requirements of 3.7 shall be cause for rejection of the lot.
4.2.3.5.2 Retest. There shall be no retest.
4.2.3.5.3 Test failure. If a test failure is attributable to an assignable cause, excluding the test initiator,
the original test results shall be discarded and that test reconducted.
Table II. Conditioning temperature.
Temperature (°F)
Sample Size
- 60 to - 70
7
65 to 75
7
195 to 205
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4.3
Test methods and procedures.
4.3.1 Breakaway torque. A torque wrench set at the torque requirement specified in 3.3 shall be used
in conjunction with a fixture to determine the adequacy of the joints. The chamber shall be secured in a
suitable vise and the torque shall be applied to the cap.
4.3.2 Residual magnetism. The assembly shall be tested for excessive residual magnetism using an
approved compass in an area free of local magnetic effects by placing the assembly 5 inches from the end
and at the same height as the compass in a north-south horizontal position (cap end at south) with the
compass set in the east-west heading. The assembly shall be moved at a speed no greater than 10 feet per
minute past the compass for its entire length, rotated 90 degrees in the horizontal position about its
longitudinal axis, and moved slowly back past the compass. This procedure shall be repeated for each 90
degrees rotation of the assembly for four full passes.
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