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Se Bifocal Ophthalmic Lens Blank NSN 6540-01-310-4964

Item Description

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.

NSN 6540-01-310-4964 NSN: 6540-01-310-4964

Features and Characteristics

Cross Sectional Shape
Sphere
Diameter
66.0 millimeters
Thickness
7.5 millimeters
Material And Location
Plastic
Additional Power Rating In Diopters
2.750 bifocal
Reading Segment Diameter
25.0 millimeters
Reading Segment Height
17.500 inches
Base Curve Diopter
6.25 plus
Cross Curve Diopter
Any acceptable
Light Transmission
Untinted
Sphere Curve Inside Diopter
Any acceptable
Sphere Curve Outside Diopter
Any acceptable
Special Features
Flat top; cr-39; segment positioned 5 mm below and 5 mm in from geometric center for right and left lenses (porm 2 mm)
Style Designator
Round with straight top bifocal segment
FSC
6540 Supplies Equipment Ophthalmic Instruments
NIIN
013104964
NSN
6540013104964

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
89-6-19-26
Cage Code:
66732
Status:
A
MSDS:
Part Number:
A89E196
Cage Code:
66732
Status:
A
MSDS:
Part Number:
P6.25 BC P2.75 ADD
Cage Code:
0FWW0
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7014001000
  • NAICS: 327212
  • SITC: 66595
  • Description: Lens blanks (other than for spectacles) not optically worked, of glass, (optical elements)
  • End Use (Code 12770):
    Other industrial supplies

Q & A

Frequently asked questions for NSN 6540-01-310-4964
What are the manufacturers of nsn 6540013104964?
Does this nsn 6540013104964 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 6540013104964
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.
Does nsn 6540013104964 contain any precious metals?
No precious metal content.
Does nsn 6540013104964 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 6540013104964?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
30300
FIIG:
A22000
App. Key:
AF
Cond. Code:
1
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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