NSN 6540-00-104-4986 MILL16991, 00-104-4986, 001044986
Product Details | SEMIFINISHED BIFOCAL OPHTHALMIC LENS BLANK
6540-00-104-4986 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 Alternates: MILL16991, 6540-00-104-4986, 00-104-4986, 6540001044986, 001044986
Medical, Dental, and Veterinary Equipment and Supplies | Ophthalmic Instruments, Equipment, and Supplies
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 65 | 26-JUN-68 | 00-104-4986 | 30300 ( LENS BLANK, OPHTHALMIC, BIFOCAL, SEMIFINISHED ) |
Drawings & Photos | NSN 6540-00-104-4986
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Technical Data | NSN 6540-00-104-4986
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | A2 ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT |
| DIAMETER | 65.0 MILLIMETERS MINIMUM |
| THICKNESS | ANY ACCEPTABLE |
| READING SEGMENT DIAMETER | 25.0 MILLIMETERS NOMINAL |
| READING SEGMENT HEIGHT | 17.5 MILLIMETERS NOMINAL |
| MATERIAL AND LOCATION | GLASS, SODA-LIME SINGLE VISION AND GLASS, BARIUM BIFOCAL |
| LIGHT TRANSMISSION | UNTINTED |
| CROSS-SECTIONAL SHAPE STYLE | D2 SPHERE |
| BASE CURVE DIOPTER | 8.25 PLUS NOMINAL |
| CROSS CURVE DIOPTER | ANY ACCEPTABLE |
| SPHERE CURVE INSIDE DIOPTER | ANY ACCEPTABLE |
| SPHERE CURVE OUTSIDE DIOPTER | ANY ACCEPTABLE |
| ADDITIONAL POWER RATING IN DIOPTERS | 1.250 BIFOCAL |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND A CLASS |
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY DIAMETER |
| III SUPPLEMENTARY FEATURES | SUITABLE FOR COATING; FOR USE W/AVIATION SPECTACLE FRAMES |
| III INTERMEDIATE PACKAGE QUANTITY | 5 |
| III EXTERIOR CONTAINER QUANTITY | 180 |
| III UNIT OF ISSUE WEIGHT | 0.25 POUNDS |
| III EXTERIOR CONTAINER WEIGHT | 45.00 POUNDS |
| III UNIT OF ISSUE CUBE | 0.0061 CUBIC FEET |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS BLANK OPHTHALMIC SEMIFINISHED BIFOCAL PLUS 8.25-PLUS 1.25 |
| III EXTERIOR CONTAINER CUBIC MEASURE | 1.100 CUBIC FEET |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILL16991 |
Restrictions/Controls & Freight Information | NSN 6540-00-104-4986
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | 0 | Nondeteriorative |
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Controlled Inventory Item Code: | U | UNCLASSIFIED |
| Precious Metals Indicator Code: | A | Item does not contain precious metal |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Category | Code | Description |
|---|---|---|
| No Freight Information | ||