Model: 450BC,275ADD,28MMFT,71MM

Se Bifocal Ophthalmic Lens Blank

Special Features:

Cr-39; convex

Properties:

Cross Sectional Shape
Sphere
Diameter
71.0 millimeters
Thickness
11.0 millimeters
Material And Location
Plastic
Additional Power Rating In Diopters
2.750 bifocal
Reading Segment Diameter
28.0 millimeters
Reading Segment Height
19.0 millimeters
Base Curve Diopter
4.50 plus
Light Transmission
Untinted
Part Name Assigned By Controlling Agency
Lens blank ophthalmic bifocal semifinished plas +4.5 cr-39 71mm
Style Designator
Round with straight top bifocal segment
NSN
6540-01-375-0088
Part Number
450BC,275ADD,28MMFT,71MM
Description
Lens Blank,ophthalmic,bifocal,se
CAGE
3N062

A transparent optical element consisting of a major blank and a bifocal segment. The blank and segment have been pressed in a glass mold to an approximate size and shape, and are ground and polished to a finished diopter curvature on one surface only.

Part 450BC,275ADD,28MMFT,71MM NSN 6540-01-375-0088

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
30300
FIIG:
A22000
Concept No.:
App. Key:
AF
Cond. Code:
1
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:
--
WCC:
744
TCC:
Z
SHC:
9
ACC:
Medical Supplies

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Schedule B and Export
  • Schedule B: 7014001000
  • SITC: 66595
  • End Use: Other industrial supplies
  • NAICS: 327212
  • USDA: 1

Freight Class: Lens blanks (other than for spectacles) not optically worked, of glass, (optical elements)

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