Model: 1240005204253

Optical Instrument Lens

Special Features:

Reflection reducing treatment on front andback surfaces, jan-m-621

Properties:

Diameter
Between 0.686 inches and 0.689 inches
Axial Thickness
0.236 inches and 0.024 inches
Compound Lensaxial Thickness
Between 0.240 inches and 0.272 inches
Compound Lens Edge Thickness
0.166 inches
Equivalent Focal Length
1.444 inches
Back Focal Length
1.281 inches
Refraction Index
1.5411 and 1.6210
Abbe Constant
59.900 and 36.200
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
0.793 inches and -0.595 inches
Element Right Surface Radius
-0.595 inches and -4.220 inches
Material
Glass, optical, mil-g-174, grade c, type 541-599 or glass, optical, mil-g-174, grade c, type 621-362
Material
Glass, optical, mil-g-174, grade c, type 541-599 or glass, optical, mil-g-174, grade c, type 621-362
Fsc Application Data
Binocular, m7, m16
NSN
6650-00-520-4253
Part Number
1240005204253
Description
Lens,optical Instrument
CAGE
A00AM

An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see window, optical instrument. Excludes reticle, optical instrument.

Part 1240005204253 NSN 6650-00-520-4253

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
21884
FIIG:
T271-E
Concept No.:
1
App. Key:
EA
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
057940
UFC:
33020
LTL:
RATING VARIABLE
LCL:
RATING VARIABLE
WCC:
744
TCC:
Z
SHC:
9
ACC:
Medical Supplies

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Schedule B and Export
  • Schedule B: 9018500000
  • SITC: 87225
  • End Use: Medicinal equipment
  • NAICS: 339115
  • USDA: 1

Freight Class: Other ophthalmic instruments and appliances and parts and accessories

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