NSN 7520-00-663-4751, 7520006634751
SLIDE RULE

Federal Supply Classification: FSC 7520 - Office Devices and Accessories
National Item Identification Number: NIIN 006634751
Codification Country: United States
Item Name Code: INC 04375
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 7520-00-663-4751

National Stock Number (NSN) 7520-00-663-4751, or NIIN 006634751, (slide rule) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 6 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

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

This NSN is assigned to Item Name Code (INC) 04375. [A DEVICE HAVING SEVERAL STANDARD SCALES FOR PERFORMING ARITHMETICAL, ALGEBRAICAL, AND TRIGONOMETRICAL CALCULATIONS BY MECHANICAL MEANS.]. 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 7520006634751 does not contain precious metals.

This NSN is associated to Schedule B 9017204000: dis calculators, slide rulers and other mathematical calculating instruments. The Schedule B End Use is listed as laboratory testing instruments. NAICS classification category 334519: other measuring and controlling device manufacturing.

This information was last updated on Aug 01, 2025.

Technical Characteristics

SPECIAL FEATURES: (FEAT) PLASTIC DISKS; 11.25 IN. DIA 0.5 IN. THK; 2 CURSORS; 3 DISKS; 1 SC EA BLACK GRAD EA TEMP M50 TO P50 DEG C RANGE 5 DEG C GRAD YELLOW BACKGROUND,DEW PT 30 DEG C TO M51 DEG C RANGE 0.5 AND 0.1 C GRAD WHITE BACKGROUND,REL HUMIDITY 1 TO 100 PCT RANGE 1 PCT GRAD WHITE BACKGROUND,DEPRESSION OF WET BULB 0 TO 34 DEG C RANGE 0.1 DEG C GRAD GRAY YELLOW LT GREEN ORANGE BLUE AND SNAD COLOR BACKGROUND,BAROMETRIC PRESSURE 23 TO 30 IN. RANGE 2 IN. GRAD CLEAR BACKGROUND; GOVT TYPE JETDS PSYCHROMETRIC COMPUTER TYPE CP-164/UM; FOR GENL PURPOSE USE; FSC APPL METEOROLOGICAL INSTR
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) PLASTIC DISKS; 11.25 IN. DIA 0.5 IN. THK; 2 CURSORS; 3 DISKS; 1 SC EA BLACK GRAD EA TEMP M50 TO P50 DEG C RANGE 5 DEG C GRAD YELLOW BACKGROUND,DEW PT 30 DEG C TO M51 DEG C RANGE 0.5 AND 0.1 C GRAD WHITE BACKGROUND,REL HUMIDITY 1 TO 100 PCT RANGE 1 PCT GRAD WHITE BACKGROUND,DEPRESSION OF WET BULB 0 TO 34 DEG C RANGE 0.1 DEG C GRAD GRAY YELLOW LT GREEN ORANGE BLUE AND SNAD COLOR BACKGROUND,BAROMETRIC PRESSURE 23 TO 30 IN. RANGE 2 IN. GRAD CLEAR BACKGROUND; GOVT TYPE JETDS PSYCHROMETRIC COMPUTER TYPE CP-164/UM; FOR GENL PURPOSE USE; FSC APPL METEOROLOGICAL INSTR