PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

551EWavemeter

Polytechnic Institute of New York University · NSN 6625-00-669-3263 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-669-3263 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-669-3263. Primary manufacturer part number: 551E.
Features
  • Wavemeter — FSC 6625
  • Calibration Accuracy Rating: 0.08 PCT ACCURACY
  • Functional Description: USED FOR FREQUENCY MEASUREMENTS IN WAVEGUIDE SYSTEMS OPERATING IN REGIONS FROM 8.2-10.0 KILOMEGACYCLES PER SECOND
  • Case Surface Treatment: SILVER PLATED
  • Functional Classification: AA-6.3
  • Indicator Type: DIRECT READING
  • Entry Date: 70-05-01
  • Reference Data and Literature: CPOLYTECHNIC RESEARCH AND DEVELOPMENT CO. COMMERCIAL DATA
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Wavemeter, cataloged under National Stock Number 6625-00-669-3263, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Polytechnic Institute of New York University. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6625-00-669-3263
Primary Part Number551E
Item NameWavemeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerPolytechnic Institute of New York University
StatusCANCELLED
Calibration Accuracy Rating0.08 PCT ACCURACY
Functional DescriptionUSED FOR FREQUENCY MEASUREMENTS IN WAVEGUIDE SYSTEMS OPERATING IN REGIONS FROM 8.2-10.0 KILOMEGACYCLES PER SECOND
Case Surface TreatmentSILVER PLATED
Functional ClassificationAA-6.3
Indicator TypeDIRECT READING
Entry Date70-05-01
Reference Data and LiteratureCPOLYTECHNIC RESEARCH AND DEVELOPMENT CO. COMMERCIAL DATA
Type/model Designation585A A
Relationship to Similar EquipmentINTERCHANGEABLE W/6625006790389
Calibration Accuracy Rating0.08 PCT ACCURACY
Functional DescriptionUSED FOR FREQUENCY MEASUREMENTS IN WAVEGUIDE SYSTEMS OPERATING IN REGIONS FROM 8.2-10.0 KILOMEGACYCLES PER SECOND
Case Surface TreatmentSILVER PLATED
Functional ClassificationAA-6.3
Indicator TypeDIRECT READING
Entry Date70-05-01
Reference Data and LiteratureCPOLYTECHNIC RESEARCH AND DEVELOPMENT CO. COMMERCIAL DATA
Type/model Designation585A A
Relationship to Similar EquipmentINTERCHANGEABLE W/6625006790389
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor6625-00-797-0250 (585A)
HAZMATNo
Weight5.7000 lbs
Cube0.4983 cu ft
Verified Substitutes 4
No Item Name Available
6625-00-797-0250585A SUCCESSOR
Oscilloscope
Tektronix, Inc.
5996-00-070-00955181-1 INTERCHANGEABLE
Amplifier,radio Frequency
Rockwell Collins, Inc. Dba Rc Displays Systems
6645-00-163-0772 INTERCHANGEABLE
Wheel Assembly
Cross-Reference Index
Part NumberManufacturer
585A Peraton Inc (USA)
551E PRIMARY Polytechnic Institute of New York University (USA)
585A Polytechnic Institute of New York University (USA)
585A Telephonics Corp/prd Instruments (USA)
Related Parts
SUCCESSOR 6625-00-797-0250 Oscilloscope · 585A
6625-00-512-3302SUCCESSOR
NO ITEM NAME AVAILABLE
5996-00-070-0095INTERCHANGEABLE
AMPLIFIER,RADIO FREQUENCY
5181-1
6645-00-163-0772INTERCHANGEABLE
WHEEL ASSEMBLY

Frequently Asked Questions

What is NSN 6625-00-669-3263?

NSN 6625-00-669-3263 is a Wavemeter, manufactured by Polytechnic Institute of New York University, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-669-3263?

NSN 6625-00-669-3263 has 4 cross-referenced part numbers: 585A (Peraton Inc), 551E (Polytechnic Institute of New York University), 585A (Polytechnic Institute of New York University), 585A (Telephonics Corp/prd Instruments).

What NSN replaces 6625-00-669-3263?

There are 4 known substitutes for 6625-00-669-3263: 6625-00-512-3302, 6625-00-797-0250, 5996-00-070-0095 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 551E?

Key specifications for 551E: Overall Height: 3.187 INCHES NOMINAL IN; Calibration Accuracy Rating: 0.08 PCT ACCURACY; Functional Description: USED FOR FREQUENCY MEASUREMENTS IN WAVEGUIDE SYSTEMS OPERATING IN REGIONS FROM 8.2-10.0 KILOMEGACYCLES PER SECOND; Case Surface Treatment: SILVER PLATED. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-669-3263 still in active supply?

NSN 6625-00-669-3263 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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