Model: 7688774

Optical Instrument Lens

Special Features:

Edges chamfered 0.010 to 0.020 in. By 45 deg. Both surfaces coated with magnesium fluoride. Rim ground.

Properties:

Diameter
Between 1.297 inches and 1.300 inches
Axial Thickness
Between 0.200 inches and 0.220 inches
Equivalent Focal Length
3.859 inches
Back Focal Length
3.759 inches
Refraction Index
1.6170
Abbe Constant
55.000
Single Lens Style
Double convex
Element Left Surface Radius
3.100 inches
Element Right Surface Radius
10.000 millimeters
Material
Glass, optical, mil-g-174, class 1, grade d, type 617-550
Material
Glass, optical, mil-g-174, class 1, grade d, type 617-550
Fsc Application Data
Periscope, tank
NSN
6650-00-768-8774
Part Number
7688774
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 7688774 NSN 6650-00-768-8774

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:
3.0 X 4.2 X 0.4
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
AM7688774
SPI Rev.:
C
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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