Model: 1240006921540

Optical Instrument Lens

Properties:

Diameter
1.575 inches
Axial Thickness
0.484 inches and 0.092 inches
Compound Lensaxial Thickness
0.576 inches
Compound Lens Edge Thickness
0.436 inches
Equivalent Focal Length
3.729 inches
Back Focal Length
3.169 inches
Refraction Index
1.6380 and 1.6490
Abbe Constant
55.500 and 33.800
Compound Lens Style
Doublet
Individual Lens Style
Double convex and double concave
Element Left Surface Radius
1.488 inches
Element Right Surface Radius
1.366 inches
Material
Glass, optical, mil-g-174, class 1, grade c
Material
Glass optical
Material Specification
Mil-g-174, class 1, grade c military specification single material response
Fsc Application Data
Sight periscope m28, integrated with fire control equipment
NSN
6650-00-692-1540
Part Number
1240006921540
Description
Lens,optical Instrument
CAGE
SCY13

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 1240006921540 NSN 6650-00-692-1540

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:
A
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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