Part Number
DEMIL
Shelf Life
UOM
NIIN
Part Information
Corners rounded 0.237in. Maximum 0.197in. Min. Radius; resolving power to be 30 sec of arc or better as used whenscanning clear aperture with a telescope of at least a 0.5in. Aperture; light deviation not to exceed plus or minus 2 min of arc; spherical power not toexceed 7 millidiopters; astigmatism not to exceed 3 millidiopters; surface quali type 80-50
NSN
National Stock Number:
TXT
Description:
Optical Instrument Window
MRC:
A measurement taken at right angles to the length of an item,in distinction from thickness.ABGL
Width:
Between 24.9 millimeters and 25.4 millimeters
MRC:
A measurement of the smallest dimension of an item,in distinction from length or width.ABNM
Thickness:
Between 4.800 millimeters and 5.200 millimeters
MRC:
A measurement of the longest dimension of any object,in distinction from width.ABRY
Length:
Between 62.740 millimeters and 63.240 millimeters
MRC:
An additional finishing process by which the surface of an item is altered in respect to polishing,grinding,and the like.AGYE
Surface Finish:
Polished
MRC:
An inside measurement between specified points on the bevel,in distinction from height.AJEF
Bevel Depth:
0.510 millimeters
MRC:
An indication of the ratio of the speed of light in the first medium to its speed in the second medium.BMMX
Refraction Index:
Between 1.5160 and 1.5180
MRC:
An indication of the polished surface/s/ on the item.BMSG
Polished Surface:
Both
MRC:
The variation of the refractive index of the item.BMSH
Dispersion:
Between 64.000 angstroms and 65.000 angstroms
MRC:
An indication of the surface/s/ treated with reflection reducing film.BMSK
Reflection Reducing Surface:
Both
MRC:
An indication of whether or not a polished periphery is provided.BMSM
Polished Periphery:
Not provided
MRC:
The angle of the bevel,expressed in degrees.BMSP
Bevel Angle In Deg:
45.000
MRC:
The element,compound,or mixture of which an item is fabricated,excluding any surface treatment.MATL
Material:
Glass, optical, jan-g-174, type 517-645, grade c
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Glass, optical, jan-g-174, type 517-645, grade c
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:
Sight periscope t42
