NSN 6540-01-353-4996, 6540013534996
APERTURE RULE TRAIN

Federal Supply Classification: FSC 6540 - Ophthalmic Instruments, Equipment, and Supplies
National Item Identification Number: NIIN 013534996
Codification Country: United States
Item Name Code: INC 77777
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 6540-01-353-4996

National Stock Number (NSN) 6540-01-353-4996, or NIIN 013534996, (aperture rule train) was assigned February 12, 1992 in the Federal Logistics Information System (FLIS). NIIN 013534996 was cancelled on August 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 3 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Mar 26, 2014. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE2DH14M0232. The total value of the awarded contracts has been US$ 39.95.

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Oct 01, 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) 77777. 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 6540013534996 does not contain precious metals.

This information was last updated on Jul 01, 2025.

Technical Characteristics

PART NAME ASSIGNED BY CONTROLLING AGENCY: (CXCY) APERTURE RULE TRAINING KIT SPORTS/ACTION CARD SET MANUAL
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) C/O:SPORTS/ACTION CARD SET;SINGLE AND DOUBLE APERTURE SLIDERS; RED POINTERS; MANUAL; HELPS IMPROVE LOW FUSIONAL AND ACCOMMANDATIVE RESERVES,POOR STEREOPSIS,FIXATION DISPARITY SUPPRESSION AND TIGHT ACCOMMODATION-CONVERSION RELATIONSHIP; INSTRUMENT HAS PROGRESSIVE FIXED DEMAND