A-A-52484
b. Design and construction. Unless otherwise specified herein and in figure 1, couplers shall be designed and constructed to the form and dimensions in accordance with SAE J318. Couplers shall not have a service lug or other design features
1. Preformed packing. The preformed packing shall be in accordance with figure 2.
2. Interchangeability. Coupler halves shall be physically and functionally interchangeable; any two, when randomly selected and joined together, shall form an airtight connection (see note e.).
c. Performance. Unless otherwise specified herein, the coupler shall meet the performance requirements of SAE J318. Low temperature testing shall be done at -65 degrees Fahrenheit (°F).
1. Thread tensile strength. Coupler halves shall withstand a tensile force of 1000 pounds (lbs) applied coincident with thread axis while exposed for 24 hours at an ambient temperature of -50°F ± 5°F followed by similar exposure at 250 ± 5°F without causing air pressure leak at threads.
2. Compression. Coupler halves shall withstand a load of 500 lbs applied perpendicularly to the sealing face on each locking jaw in the direction of force normally resulting from compression of packing. When loaded in this manner, there shall be no permanent set to the packing and coupling shall continue to operate after 24 hours exposure at -50° ± 5°F followed by 24 hours exposure at 200 ± 5°F ambient temperatures.
d. Identification and marking. Identification and marking shall be permanent and legible and shall include as a minimum, the manufacturer’s CAGE code and part number, and the part identification number (PIN) (see figures 1 and 2).
QUALITY ASSURANCE PROVISIONS
a. Responsibility for inspection. The contractor is responsible for the performance of all inspections (examinations and tests).
b. Contract certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this commercial item description and that the product conforms to the producer’s own drawings, specifications, workmanship standards, and quality assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of such conformance prior to the first delivery and thereafter as may be otherwise provided for under the provisions of the contract.
PRESERVATION, PACKAGING, PACKING, LABELING, AND MARKING
Preservation, packaging, packing, labeling, and in the contract or order (see note b.).
NOTES
(This section contains information of a general that may be helpful, but is not mandatory.)
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