MRC:
Indicates whether or not a ferrous alloy object has been subjected to a process whereby the outer portion is made substantially harder than the inner portion or core.AASG
Casehardening Indicator:
Not casehardened
MRC:
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.ABHP
Overall Length:
Between 2.960 inches and 2.970 inches
MRC:
A numeric value that reflects the hardness of a metallic item when used in conjunction with a hardness rating scale.AETC
Metallic Hardness Rating:
40.0 rockwell c and 46.0 rockwell c
MRC:
The length of a straight line which passes through the center of the striking end,and terminates at the circumference.AMZG
Striking End Diameter:
Between 0.166 inches and 0.176 inches
MRC:
The radius of the striking end.AMZR
Striking End Radius:
Between 0.083 inches and 0.088 inches
MRC:
Indicates the type of firing pin.AMZS
Firing Pin Type:
Multiple shoulder
MRC:
Indicates the type of striking end.AMZT
Striking End Type:
Flat
MRC:
The element,compound,or mixture of which an item is fabricated,excluding any surface treatment.MATL
Material:
Steel, aisi 4140 and steel, aisi 4142 and steel, aisi 4145 and steel, aisi 4147 and steel, aisi 4150
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Steel comp 4140 and steel comp 4142 and steel, aisi 4145 and steel, aisi 4147 and steel comp 4150
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Aisi 4140 assn standard 1st material response and aisi 4142 assn standard 2nd material response and aisi 4150 assn standard 5th material response
MRC:
The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.SFTT
Surface Treatment:
Phosphate
MRC:
Consists of plating,dip,and/or coating that cannot be wiped off.plating and/or coating is any chemical and/or metallic additive,electrochemical,or mild mechanical process which protects a surface.SURF
Surface Treatment:
Phosphate
MRC:
The justification for the assignment of a federal supply class /fsc/ to an item based on the classification of the next higher classifiable assembly.ZZZV
Fsc Application Data:
Breech mechanism, gun 76mm
