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Page Title:
Table II. Material selection and fabrication documents. |
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|  MIL-I-85889(AS)
3.2.2.2 Interchangeability of parts. All parts having the same part number shall be directly and completely
interchangeable with each other in accordance with MIL-I-8500.
3.2.2.3 Prohibition on similarly threaded parts. Parts differing only in thread form are prohibited.
3.2.2.4 Standard tools and teat equipment. The igniter shall be designed so that standard tools and test
equipment may be used, to the greatest possible extent, to accomplish all necessary assembly installation, and
testing.
3.2.2.5 Foreign object damage prevention. The contractor shall employ the design practices of Appendix A
MIL-STD-980 to prevent foreign object damage
3.2.2.6 Human engineering. The contractor shall incorporate the human engineering principles specified in
MIL-H-46855 and MIL-STD-1472 into the design.
3.2.2.7 Interchangeability. Each igniter produced shall possess functional and physical characteristics
necessary to provide equal performance reliability, and maintainability. Each igniter shall meet all interface
requirements without selection or alteration.
3.2.3 Materials.
3.2.3.1 Design guidelines. The documents of table II shall be used in selecting materials and fabrication
techniques. Materials shall be selected by the contractor for lightweight construction, simplicity of design, proper
operation, and economy of manufacture
TABLEII. Material selection and fabrication documents.
3.2.3.2 Prohibited materials. The following materials are prohibited:
Radioactive materials
a
.
Mercury
b
.
Cacmium
c
.
Lead azide
d
.
e
.
Asbestos
f
.
Proprietary materials and components
7
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