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|  MIL-F-63446B (AR)
3.1 Materials. Materials shall be as specified herein and on the applicable drawings and
specifications.
3.2 First article When specified in the contractor purchase order (see 6.2), a sample shall
be subjected to fist article in accordance with the technical provisions herein (see 4.3).
3.3 Drawings . The drawings forming a part of this specification are end product drawings.
No deviation from the prescribed dimensions or tolerances is permissible without prior approval
of the contracting officer. Where tolerances could cumulatively result in incorrect fits, the
contractor shall provide tolerances within those prescribed on the drawings to insure correct fit,
assembly, and operation of the fuze. Any data (e.g., shop drawings, layouts flowsheets,
processing procedures, etc.) prepared by the contractor or obtained from a vender to support
fabrication and manufacture of the production item shall be made available, upon request to, for
inspection by the contracting officer or his designated representative. The dimensions shown on
the drawings apply at room temperatures from 68F to 70F.
3.4 Fuze assemblies and parts Fuze assemblies and parts shall comply with all the
requirements specified on Drawings 9333825, 9345168, associated drawings as applicable, and
with all requirements specified in applicable specifications and standards.
3.4.1 Molded plastic parts Dimensions on plastic parts that area function of core and
cavity sizes of the mold itself shall be inspected at reduced levels. One tenth of one percent ( .1%)
of a production lot shall be inspected per cavity. A single reject resulting from the reduced
inspection of molded dimensions shall cause that cavity to be removed from production until
corrective action is taken and the part from that cavity requalified.
3.4.2 Die cast parts The aluminum die cast fuze body shall be manufactured, tested and
inspected per the requirements of ASTM B85 and Drawing 9333824.
3.4.3 Porosity check. The die cast fuze body shall be inspected for porosity in accordance
with 4.5.1 of this specification.
3.4.4 Springs.
3.4.4.1 Spring embrittlement. The springs used in the fabrication of the fuze shall not break
when extended or distorted to the point of minimum permanent distortion.
3.4.4.2 Spring set. The slider spring and firing pin spring shall maintain drawing load
requirements after being compressed at elevated temperatures.
3.4.5 Detonator. All detonators shall have been subjected to and passed all the
requirements of MIL-D-14978.
3.4.6 Lead output. The long and short lead assemblies, when initiated in tandem by an M55
detonator, shall cause an impression in a steel witness block not less than .015 inch in depth.
3.5.1 Jolt. The fuze shall be safe to store, handle, use or dispose of after being subjected to
Test A1, Jolt Machine Method of MIL-STD-331.
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