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NSN 6540-01-375-0092, 6540013750092
LENS BLANK,OPHTHALMIC,BIFOCAL,SEMIFINISHED

Federal Supply Classification
FSC 6540 - Ophthalmic Instruments, Equipment, and Supplies
National Item Identification Number
NIIN 013750092
Codification Country
United States
Item Name Code
INC 30300
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
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DLMS® Summary

National Stock Number 6540-01-375-0092

National Stock Number (NSN) 6540-01-375-0092, or NIIN 013750092, (lens blank,ophthalmic,bifocal,semifinished) was assigned May 3, 1993 in the Federal Logistics Information System (FLIS). NIIN 013750092 was cancelled on September 2, 2014, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 20, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part is a commercial/non-developmental/off-the-shelf-item. Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 30300. [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.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6540013750092 does not contain precious metals.

This information was last updated on .


Technical Characteristics

DIAMETER
(ABMZ) 71.0 MILLIMETERS NOMINAL
LIGHT TRANSMISSION
(AKZS) UNTINTED
CROSS-SECTIONAL SHAPE STYLE
(AAGR) SPHERE
THICKNESS
(ABNM) 11.0 MILLIMETERS NOMINAL
ADDITIONAL POWER RATING IN DIOPTERS
(AKQM) 3.750 BIFOCAL
PART NAME ASSIGNED BY CONTROLLING AGENCY
(CXCY) LENS BLANK OPHTHALMIC BIFOCAL SEMIFINISHED PLAS +4.5 CR-39 71MM
SPECIAL FEATURES
(FEAT) CR-39; CONVEX
STYLE DESIGNATOR
(STYL) ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT
READING SEGMENT HEIGHT
(AKQW) 19.0 MILLIMETERS NOMINAL
MATERIAL AND LOCATION
(AKEL) PLASTIC OVERALL
BASE CURVE DIOPTER
(AKQZ) 4.50 PLUS NOMINAL
READING SEGMENT DIAMETER
(AKQV) 28.0 MILLIMETERS NOMINAL

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