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Which bus-mounted breakers require cover screws and nuts on the ON end of the breaker?

Issue:
Which bus-mount breakers require cover screws and nuts on the ON end of the breaker?

Product Line:
Legacy F, K, L, M frame circuit breakers

Environment:
Electrical Distribution

Cause:
Installation questions

Resolution:
Circuit breakers with the following prefixes must have screws with nuts through the ON mounting-screw holes:
FHP FCP SFAP SFHP SFCP LAP LHP Q4P SLAP SLHP MAP MHP SMAP SMHP (MEP MXP).

Circuit breakers with these prefixes DO NOT need screws through the ON end mounting holes:  
FAP KAP KHP SKAP

Powerpact breakers do not need these extra screws.
 
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