PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A557Scale,cathode Ray Tube

Jetronic Industries, Inc. Dba Jetronic Industries, Inc. Div Contracts · NSN 6625-00-553-6054 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-553-6054 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-553-6054. Primary manufacturer part number: A557.
Features
  • Scale,cathode Ray Tube — FSC 6625
  • Scale Division Quantity: 30
  • Overall Thickness: 0.750 INCHES NOMINAL IN
  • Material: PLASTIC CELLULOSE ACETATE SCALE
  • FSC Application Data: OSCILLOSCOPE
  • Scale Type: VERTICAL
  • Mounting Configuration: THREE TABS 3/8 IN. W BY 3/4 IN. LG EQUALLY SPACED AROUND DIA IN
  • Overall Diameter: 2.938 INCHES NOMINAL IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Plastic Cellulose Acetate Scale construction
General Description

The Scale,cathode Ray Tube, cataloged under National Stock Number 6625-00-553-6054, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Jetronic Industries, Inc. Dba Jetronic Industries, Inc. Div Contracts. Government technical data includes 16 verified specifications, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-553-6054
Primary Part NumberA557
Item NameScale,cathode Ray Tube
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerJetronic Industries, Inc. Dba Jetronic Industries, Inc. Div Contracts
StatusCANCELLED
Scale Division Quantity30
Overall Thickness0.750 INCHES NOMINAL IN
MaterialPLASTIC CELLULOSE ACETATE SCALE
FSC Application DataOSCILLOSCOPE
Scale TypeVERTICAL
Mounting ConfigurationTHREE TABS 3/8 IN. W BY 3/4 IN. LG EQUALLY SPACED AROUND DIA IN
Overall Diameter2.938 INCHES NOMINAL IN
Scale Quantity1
Overall Thickness0.750 INCHES NOMINAL IN
MaterialPLASTIC CELLULOSE ACETATE SCALE
FSC Application DataOSCILLOSCOPE
Scale TypeVERTICAL
Scale Division Quantity30
Mounting ConfigurationTHREE TABS 3/8 IN. W BY 3/4 IN. LG EQUALLY SPACED AROUND DIA IN
Overall Diameter2.938 INCHES NOMINAL IN
Scale Quantity1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeX
Verified Substitutes 12
4730-00-164-35827372342 INTERCHANGEABLE
Connector,multiple,fluid Pressur
Us Army Aviation and Missile Command
6750-00-364-1631 INTERCHANGEABLE
Film,photographic
6750-00-410-5985 INTERCHANGEABLE
Film,photographic
6810-00-812-3788 INTERCHANGEABLE
Aluminum
6750-01-227-02521001023 INTERCHANGEABLE
Film,photographic
Kodak Polychrome Graphics, Llc
6750-01-227-4186 INTERCHANGEABLE
Film,photographic
6750-01-227-4187 INTERCHANGEABLE
Film,photographic
6750-01-227-4192 INTERCHANGEABLE
Film,photographic
6750-01-227-4193 INTERCHANGEABLE
Film,photographic
6750-01-413-0629 INTERCHANGEABLE
Film,photographic
Cross-Reference Index
Part NumberManufacturer
A557 PRIMARY Jetronic Industries, Inc. Dba Jetronic Industries, Inc. Div Contracts (USA)
Related Parts
4730-00-164-3582INTERCHANGEABLE
CONNECTOR,MULTIPLE,FLUID PRESSUR
7372342
6750-00-364-1631INTERCHANGEABLE
FILM,PHOTOGRAPHIC
6750-00-410-5985INTERCHANGEABLE
FILM,PHOTOGRAPHIC
6810-00-812-3788INTERCHANGEABLE
ALUMINUM
6750-01-227-0252INTERCHANGEABLE
FILM,PHOTOGRAPHIC
1001023
6750-01-227-4186INTERCHANGEABLE
FILM,PHOTOGRAPHIC
6750-01-227-4187INTERCHANGEABLE
FILM,PHOTOGRAPHIC
6750-01-227-4192INTERCHANGEABLE
FILM,PHOTOGRAPHIC
6750-01-227-4193INTERCHANGEABLE
FILM,PHOTOGRAPHIC
6750-01-413-0629INTERCHANGEABLE
FILM,PHOTOGRAPHIC
6750-01-413-0630INTERCHANGEABLE
FILM,PHOTOGRAPHIC
6750-01-413-0631INTERCHANGEABLE
FILM,PHOTOGRAPHIC

Frequently Asked Questions

What is NSN 6625-00-553-6054?

NSN 6625-00-553-6054 is a Scale,cathode Ray Tube, manufactured by Jetronic Industries, Inc. Dba Jetronic Industries, Inc. Div Contracts, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-553-6054?

NSN 6625-00-553-6054 has 1 cross-referenced part number: A557 (Jetronic Industries, Inc. Dba Jetronic Industries, Inc. Div Contracts).

What NSN replaces 6625-00-553-6054?

There are 12 known substitutes for 6625-00-553-6054: 4730-00-164-3582, 6750-00-364-1631, 6750-00-410-5985 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A557?

Key specifications for A557: Scale Division Quantity: 30; Overall Thickness: 0.750 INCHES NOMINAL IN; Material: PLASTIC CELLULOSE ACETATE SCALE; FSC Application Data: OSCILLOSCOPE. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-553-6054 still in active supply?

NSN 6625-00-553-6054 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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