PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15291Metallograph

Unitron Inc · NSN 6650-01-264-4415 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-01-264-4415 — this item is cataloged by the U.S. Government under National Stock Number 6650-01-264-4415. Primary manufacturer part number: 15291.
Features
  • Metallograph — FSC 6650
  • General Characteristics Item Description: 150W HALOGEN LIGHT SOURCE & A XENON SOURCE; MAGNIFICATION RANGE: 5X TO 2000X USING A 10X EYEPIECE W/5X,10X,20X,40X,& 80X OR 100X OBJECTIVES; MODES: BRIGHTFIELD,AND DARKFIELD ILLUMINATION,POLARIZED LIGHT ILLUMINATION,AND DIFFERENTAL INTERFERENCE CONTRAST; BUILT-IN CAMARA MECHANISM,PHOTO LENS AND CAMERA MOUNT; 4X5 POLAROID SINGLE SHEET FILM HOLDER & A 35MM CAMERA BODY; BLUE & GREEN FILTER; DIRECT READING AUTO EXPOSURE CONTROL,CALIBRATED IN RANGE OF ASA 6-3200 MIN W/SHUTTER SPEEDS 1/60 SEC TO 30 MIN,BUILT-IN PHOTO CELL; RETICLES: MICROMETER SCALE & ASTM AUSTENITE GRAIN SIZE; OBJECTIVES APOCHROMATIC CORRECTED & FLAT FIELD W
  • 1 verified cross-reference
  • Primary manufacturer: Unitron Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Metallograph, cataloged under National Stock Number 6650-01-264-4415, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Unitron Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6650-01-264-4415
Primary Part Number15291
Item NameMetallograph
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerUnitron Inc
StatusACTIVE
General Characteristics Item Description150W HALOGEN LIGHT SOURCE & A XENON SOURCE; MAGNIFICATION RANGE: 5X TO 2000X USING A 10X EYEPIECE W/5X,10X,20X,40X,& 80X OR 100X OBJECTIVES; MODES: BRIGHTFIELD,AND DARKFIELD ILLUMINATION,POLARIZED LIGHT ILLUMINATION,AND DIFFERENTAL INTERFERENCE CONTRAST; BUILT-IN CAMARA MECHANISM,PHOTO LENS AND CAMERA MOUNT; 4X5 POLAROID SINGLE SHEET FILM HOLDER & A 35MM CAMERA BODY; BLUE & GREEN FILTER; DIRECT READING AUTO EXPOSURE CONTROL,CALIBRATED IN RANGE OF ASA 6-3200 MIN W/SHUTTER SPEEDS 1/60 SEC TO 30 MIN,BUILT-IN PHOTO CELL; RETICLES: MICROMETER SCALE & ASTM AUSTENITE GRAIN SIZE; OBJECTIVES APOCHROMATIC CORRECTED & FLAT FIELD W
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4820-00-036-1864 INTERCHANGEABLE
Ring,adjusting
2810-00-306-655315291 INTERCHANGEABLE
Rocker Assembly,intake Valve
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
6240-00-760-830660XA INTERCHANGEABLE
Lamp,incandescent
Gte Products Corp Metal Laminates Div
5985-01-092-9267 INTERCHANGEABLE
Attenuator,variable
5930-01-166-700215291 INTERCHANGEABLE
Switch,coolant Temp
Electro Impulse Laboratory Inc Dba Electro Impulse Inc
2910-01-333-231315291 INTERCHANGEABLE
Filter Body,fluid
Parker-Hannifin Corporation Dba Hydraulic Filter Division Div Hydraulic & Fuel Filter Division
5865-01-537-85991529-1 INTERCHANGEABLE
Sensor Assembly,countermeasures
Avtechtyee Inc Dba Avtech
6685-01-580-30921529-1 INTERCHANGEABLE
Module Battery
Textron Aviation Inc
5340-01-582-520515291 INTERCHANGEABLE
Bracket,mounting
DP Manufacturing Inc.
Cross-Reference Index
Part NumberManufacturer
15291 Unitron Inc (USA)
Related Parts
4820-00-036-1864INTERCHANGEABLE
RING,ADJUSTING
2810-00-306-6553INTERCHANGEABLE
ROCKER ASSEMBLY,INTAKE VALVE
15291
6240-00-760-8306INTERCHANGEABLE
LAMP,INCANDESCENT
60XA
5985-01-092-9267INTERCHANGEABLE
ATTENUATOR,VARIABLE
5930-01-166-7002INTERCHANGEABLE
SWITCH,COOLANT TEMP
15291
2910-01-333-2313INTERCHANGEABLE
FILTER BODY,FLUID
15291
5865-01-537-8599INTERCHANGEABLE
SENSOR ASSEMBLY,COUNTERMEASURES
1529-1
6685-01-580-3092INTERCHANGEABLE
MODULE BATTERY
1529-1
5340-01-582-5205INTERCHANGEABLE
BRACKET,MOUNTING
15291

Frequently Asked Questions

What is NSN 6650-01-264-4415?

NSN 6650-01-264-4415 is a Metallograph, manufactured by Unitron Inc, classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-01-264-4415?

NSN 6650-01-264-4415 has 1 cross-referenced part number: 15291 (Unitron Inc).

What NSN replaces 6650-01-264-4415?

There are 9 known substitutes for 6650-01-264-4415: 4820-00-036-1864, 2810-00-306-6553, 6240-00-760-8306 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15291?

Key specifications for 15291: General Characteristics Item Description: 150W HALOGEN LIGHT SOURCE & A XENON SOURCE; MAGNIFICATION RANGE: 5X TO 2000X USING A 10X EYEPIECE W/5X,10X,20X,40X,& 80X OR 100X OBJECTIVES; MODES: BRIGHTFIELD,AND DARKFIELD ILLUMINATION,POLARIZED LIGHT ILLUMINATION,AND DIFFERENTAL INTERFERENCE CONTRAST; BUILT-IN CAMARA MECHANISM,PHOTO LENS AND CAMERA MOUNT; 4X5 POLAROID SINGLE SHEET FILM HOLDER & A 35MM CAMERA BODY; BLUE & GREEN FILTER; DIRECT READING AUTO EXPOSURE CONTROL,CALIBRATED IN RANGE OF ASA 6-3200 MIN W/SHUTTER SPEEDS 1/60 SEC TO 30 MIN,BUILT-IN PHOTO CELL; RETICLES: MICROMETER SCALE & ASTM AUSTENITE GRAIN SIZE; OBJECTIVES APOCHROMATIC CORRECTED & FLAT FIELD W. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com