PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

549-20Window,dial

Elbitamerica, Inc. · NSN 5355-00-538-6389 · FSC 5355 · No Item Name Available
Verified by PartsTable
NSN 5355-00-538-6389 — this item is cataloged by the U.S. Government under National Stock Number 5355-00-538-6389. Primary manufacturer part number: 549-20.
Features
  • Window,dial — FSC 5355
  • Material: GLASS
  • Outside Diameter: 1.980 INCHES MINIMUM AND 1.995 INCHES MAXIMUM IN
  • Style Designator: ROUND
  • Material Thickness: 0.057 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
  • Color: CLEAR
  • 12 verified cross-references
  • Primary manufacturer: Elbitamerica, Inc.
Applications
  • Applications requiring Glass construction
General Description

The Window,dial, cataloged under National Stock Number 5355-00-538-6389, is classified within Federal Supply Class 5355 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Elbitamerica, Inc.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5355-00-538-6389
Primary Part Number549-20
Item NameWindow,dial
FSC / FSG5355 / 53 — No Item Name Available
ManufacturerElbitamerica, Inc.
StatusCANCELLED
MaterialGLASS
Outside Diameter1.980 INCHES MINIMUM AND 1.995 INCHES MAXIMUM IN
Style DesignatorROUND
Material Thickness0.057 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
ColorCLEAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2530-00-137-9235220635 INTERCHANGEABLE
Dummy Coupling,automotive Air Br
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5355-00-144-4593 INTERCHANGEABLE
Window,dial
5133-00-189-9281 INTERCHANGEABLE
Drill,twist
6920-00-313-854711401 INTERCHANGEABLE
Tape Flannel
Swest Inc
5355-00-477-4959 INTERCHANGEABLE
Window,dial
5355-00-505-2237 INTERCHANGEABLE
Window,dial
1005-00-512-768711401 INTERCHANGEABLE
Plate,gun Charger P
Nobles Worldwide, Inc.
5355-00-538-6344 INTERCHANGEABLE
Window,dial
5355-00-538-6382 INTERCHANGEABLE
Window,dial
5355-00-538-6383 INTERCHANGEABLE
Window,dial
Cross-Reference Index
Part NumberManufacturer
549-20 Elbitamerica, Inc. (USA)
11401 Meggitt (new Hampshire), Inc (USA)
MIL-G-81704 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AN5727-1 Aeronautical Standards Group Dept of Navy and Air Force (USA)
NMP45 Ashcroft Inc Dba Heise (USA)
MS28105-7 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
WC001 Elgin National Industries Inc (USA)
AG2QQQQ Ametek, Inc. Div Aerospace & Defense (USA)
AN5727-1 Department of the Air Force (USA)
4137157-1 General Electric Company (USA)
4137157PT1 General Electric Company (USA)
4137157P1 General Electric Company (USA)
Related Parts
2530-00-137-9235INTERCHANGEABLE
DUMMY COUPLING,AUTOMOTIVE AIR BR
220635
5355-00-144-4593INTERCHANGEABLE
WINDOW,DIAL
5133-00-189-9281INTERCHANGEABLE
DRILL,TWIST
6920-00-313-8547INTERCHANGEABLE
TAPE FLANNEL
11401
5355-00-477-4959INTERCHANGEABLE
WINDOW,DIAL
5355-00-505-2237INTERCHANGEABLE
WINDOW,DIAL
1005-00-512-7687INTERCHANGEABLE
PLATE,GUN CHARGER P
11401
5355-00-538-6344INTERCHANGEABLE
WINDOW,DIAL
5355-00-538-6382INTERCHANGEABLE
WINDOW,DIAL
5355-00-538-6383INTERCHANGEABLE
WINDOW,DIAL
5355-00-538-6384INTERCHANGEABLE
WINDOW,DIAL
5355-00-538-6386INTERCHANGEABLE
WINDOW,DIAL

Frequently Asked Questions

What is NSN 5355-00-538-6389?

NSN 5355-00-538-6389 is a Window,dial, manufactured by Elbitamerica, Inc., classified under FSC 5355 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5355-00-538-6389?

NSN 5355-00-538-6389 has 12 cross-referenced part numbers: 549-20 (Elbitamerica, Inc.), 11401 (Meggitt (new Hampshire), Inc), MIL-G-81704 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AN5727-1 (Aeronautical Standards Group Dept of Navy and Air Force), NMP45 (Ashcroft Inc Dba Heise) and 7 more.

What NSN replaces 5355-00-538-6389?

There are 12 known substitutes for 5355-00-538-6389: 2530-00-137-9235, 5355-00-144-4593, 5133-00-189-9281 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 549-20?

Key specifications for 549-20: Material: GLASS; Outside Diameter: 1.980 INCHES MINIMUM AND 1.995 INCHES MAXIMUM IN; Style Designator: ROUND; Material Thickness: 0.057 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5355-00-538-6389 still in active supply?

NSN 5355-00-538-6389 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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