Model: 7688718

Optical Instrument Lens

Special Features:

Front and back surfaces coated with magnesium fluoride. All edges chamfered 0.020 in. Min. By 45 deg. Rim and chamfers ground.

Properties:

Diameter
Between 1.062 inches and 1.065 inches
Axial Thickness
Between 0.108 inches and 0.128 inches and 0.384 inches and 0.404 inches
Compound Lensaxial Thickness
Between 0.492 inches and 0.532 inches
Compound Lens Edge Thickness
0.469 inches
Equivalent Focal Length
35.620 inches
Refraction Index
1.5110 and 1.7200
Abbe Constant
63.500 and 29.300
Compound Lens Style
Doublet
Individual Lens Style
Double convex and double concave
Element Left Surface Radius
1.575 inches
Element Right Surface Radius
1.087 inches
Material
Glass, optical, mil-g-174, class 1, grade c, type 511-635 and glass, optical, mil-g-174, class 1, grade c, type 720-293
Material
Glass, optical, mil-g-174, class 1, grade c, type 511-635 and glass, optical, mil-g-174, class 1, grade c, type 720-293
Fsc Application Data
Periscope, tank
NSN
6650-00-768-8718
Part Number
7688718
Description
Lens,optical Instrument
CAGE
19200

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 7688718 NSN 6650-00-768-8718

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
3.4 X 4.2 X 0.7
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
SPI Rev.:
SPC Mkg:
LVL_A:
LVL_B:

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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