부품 정보
Phosphate is not sand blasted or applied to internal surfacesl supplemental oil treatment is applied after painting; paint is heat resistant per mil-std-193, color no. 15200 of fed-std-595, applied to specific external surfaces only; chromium plating is applied only to internal surfaces; no mechanical method for removal of chromium platepermitted; plating will produce a continuaaly diminishing dia. Towards the muzzle, except that from the origin of rifling to within 102 mm. Of the muzzlend; a variation of 0.025 from a continually diminishing dia. Is permissible and 0.013 variation is permissible over the remaining lg. Provided that resultant surfaces remain within densional limits for bore and groove dia.; heat treatment is to heat barrel and piston at 1550-1575 deg. F., oil quench, temper 1 hr. Min. To rockwell hardness rc 28-36; gas ports-holes are located within barrel rifling grooves
TXT
묘사:
Machine Gun Barrel
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 the inside surface.AAJQ
Inside Surface Treatment:
Chromium, qq-c-320, class 2a
MRC:
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.ABHP
Overall Length:
1143.0 millimeters
MRC:
The national stock number or the identification information of the end equipment for which the item is a part.AGAV
End Application:
RECO-IL-AMP-LIFI
MRC:
A designation indicating the size by which the item is commercially known and/or identified.ALJP
Size Designation:
.50 caliber
MRC:
The element,compound,or mixture of which an item is fabricated,excluding any surface treatment.MATL
Material:
Steel, aisi 4150 and steel, aisi 4140
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Steel comp 4150 and steel comp 4140
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 4150 assn standard 1st material response and aisi 4140 assn standard 2nd 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 manganese and paint
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, mil-p-16232, type m, class 1 and painted
MRC:
The alpha-numeric-alpha designation used to identify the type and/or model of the basic item.TMDN
Type/model Designation:
M3
