FED-STD-143 Spark Plug. Heat Rating Of, Method Of Classifying \(S/S By Sae-J2162\)The purpose of this Federal Standard is the establishment of uniform heat rating descriptions for use in classifying spark plugs of the unshielded type. The content of this standard is for use in describing unshielded spark plugs, procured, catalogued, stocked, or used by the Government.

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Fed. Std. No. 143a

duplicate to the General Services Adminis-

S5. Conflict with referenced specifica-

tions. Where the requirements specified in

tration, Federal Supply Service, Standardiza-

tion Divisiion, Washington 25, D. C.

this standard conflict with any requirements

in a referenced specification, the require-

ments of the standard shall apply. Nature

of conflict between the standard and the

MILITARY INTEREST:

Navy-Y

referenced specification shall be submitted in