PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0021-AMirror Assembly,rearview

Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg. · NSN 2540-01-261-2657 · FSC 2540 · No Item Name Available
Verified by PartsTable
NSN 2540-01-261-2657 — this item is cataloged by the U.S. Government under National Stock Number 2540-01-261-2657. Primary manufacturer part number: 0021-A.
Features
  • Mirror Assembly,rearview — FSC 2540
  • Material: GLASS MIRROR
  • Mirror Shape: RECTANGULAR W/ROUND ENDS
  • Mounting Configuration: BRACKET MOUNTING W/TWO 5/16 IN. HEX HEAD CAPSCREWS IN
  • Mounting Location: OUTSIDE
  • 4 verified cross-references
  • Primary manufacturer: Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg.
Applications
  • Applications requiring Glass Mirror construction
General Description

The Mirror Assembly,rearview, cataloged under National Stock Number 2540-01-261-2657, is classified within Federal Supply Class 2540 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN2540-01-261-2657
Primary Part Number0021-A
Item NameMirror Assembly,rearview
FSC / FSG2540 / 25 — No Item Name Available
ManufacturerChantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg.
StatusACTIVE
MaterialGLASS MIRROR
Mirror ShapeRECTANGULAR W/ROUND ENDS
Mounting ConfigurationBRACKET MOUNTING W/TWO 5/16 IN. HEX HEAD CAPSCREWS IN
Mounting LocationOUTSIDE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 10
4730-00-138-1846 INTERCHANGEABLE
Coupling,pipe
5331-00-166-0975AS3209-011 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
3110-00-554-3197 INTERCHANGEABLE
Bearing,ball,annular
1680-00-588-85340038 INTERCHANGEABLE
Parts Kit,actuator,
Aerocontrolex Group, Inc. Div Talley Actuators
6505-00-610-512245586 INTERCHANGEABLE
Ointment Base
Beiersdorf Inc
1680-00-708-41670021 INTERCHANGEABLE
Parts Kit,actuator,
Aerocontrolex Group, Inc. Div Talley Actuators
6520-01-224-96770011 INTERCHANGEABLE
Wheel,abrasive
Shofu Dental Corp
6515-01-526-05970021 INTERCHANGEABLE
Electrode,electrosurgical,laparo
Ethicon Us Llc Div Ethicon
5331-01-598-6614 INTERCHANGEABLE
O-Ring
1305-01-676-05740021 INTERCHANGEABLE
Cartridge,caliber .22
Ammunition Accessories Inc. Dba Cci Speer
Cross-Reference Index
Part NumberManufacturer
0021 Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg. (USA)
0011 Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg. (USA)
0021-A PRIMARY Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg. (USA)
5749697REVCFN5 Naval Sea Systems Command (USA)
Related Parts
4730-00-138-1846INTERCHANGEABLE
COUPLING,PIPE
5331-00-166-0975INTERCHANGEABLE
O-RING
AS3209-011
3110-00-554-3197INTERCHANGEABLE
BEARING,BALL,ANNULAR
1680-00-588-8534INTERCHANGEABLE
PARTS KIT,ACTUATOR,
0038
6505-00-610-5122INTERCHANGEABLE
OINTMENT BASE
45586
1680-00-708-4167INTERCHANGEABLE
PARTS KIT,ACTUATOR,
0021
6520-01-224-9677INTERCHANGEABLE
WHEEL,ABRASIVE
0011
6515-01-526-0597INTERCHANGEABLE
ELECTRODE,ELECTROSURGICAL,LAPARO
0021
5331-01-598-6614INTERCHANGEABLE
O-RING
1305-01-676-0574INTERCHANGEABLE
CARTRIDGE,CALIBER .22
0021

Frequently Asked Questions

What is NSN 2540-01-261-2657?

NSN 2540-01-261-2657 is a Mirror Assembly,rearview, manufactured by Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg., classified under FSC 2540 (No Item Name Available). Status: active.

What are the part numbers for NSN 2540-01-261-2657?

NSN 2540-01-261-2657 has 4 cross-referenced part numbers: 0021 (Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg.), 0011 (Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg.), 0021-A (Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg.), 5749697REVCFN5 (Naval Sea Systems Command).

What NSN replaces 2540-01-261-2657?

There are 10 known substitutes for 2540-01-261-2657: 4730-00-138-1846, 5331-00-166-0975, 3110-00-554-3197 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 0021-A?

Key specifications for 0021-A: Material: GLASS MIRROR; Mirror Shape: RECTANGULAR W/ROUND ENDS; Mounting Configuration: BRACKET MOUNTING W/TWO 5/16 IN. HEX HEAD CAPSCREWS IN; Mounting Location: OUTSIDE. 4 total characteristics are documented in the Federal Logistics Information System.

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