Model: 957F048052
Tank Periscope Head AssemblySpecial Features:
Head, outer; matl: alloy casting 4340, astm a732 grade 10q, heat treat torc 30 to 36; casting gas tight to 40 psig; protective finish: iron phosphate coat per tt-c-490, mthd i, type ii; dia 5 in.; lens opening; dia 1.750; housing upper drive; matl: cast al-bronze qq-c-390, cl954 type i, optional, type ii or type iii; casting meet rqmts of specification mil-c-6021, class 4 graded; window round: metric 51.0 dia; bevr=34.62; matl: optical glass, spec mil-g-174 grb type ks or equiv; support, mirror: matl: alum casting a356.0t6, qq-a-601; final protective finish: anodize per mil-a-8625, type ii, class 2, dyedblack; casting specification mil-c-6021, class 4; grade d; quality assurance rqmts 12266908 apply to this dwg
Properties:
The top section of a periscope, tank, consisting of an inclosure which contains one or more mirror(s), and/or prism(s), and a window. It is readily removable to facilitate replacement.
Part 957F048052 NSN 1240-01-071-2592
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsPackaging & Shipping
Freight Classification
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Schedule B and Export
- Schedule B: 9803200000
- SITC: 93100
- End Use: Military apparel and footwear
- NAICS: 990000
- USDA: 1
Freight Class: Military equipments not identified by kind
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