Features
type 517-642 grade b mil-g-174 optical glass material.
Includes quality control certificate of conformance.
Specifications
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Diameter:
51.0 millimeters
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End Application:
Xm1 tank; m1a1; xm1 gas
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Axial Thickness:
8.0 millimeters
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Single Lens Style:
Double convex
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Material:
Glass, optical, mil-g-174, grade b, type 517-642
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Federal Supply Class (fsc):
Optical instruments, test equipment, components and accessories
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National Stock Number (nsn):
6650-01-079-3018