PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

46-21Arm,windshield Wiper

United Technologies Corp Electro Systems Inc · NSN 2540-01-446-9491 · FSC 2540 · No Item Name Available
Verified by PartsTable
NSN 2540-01-446-9491 — this item is cataloged by the U.S. Government under National Stock Number 2540-01-446-9491. Primary manufacturer part number: 46-21.
Features
  • Arm,windshield Wiper — FSC 2540
  • Adjustability: NONADJUSTABLE
  • Arm Length: 28.000 INCHES NOMINAL IN
  • Drive Adapter Extension: NOT INCLUDED
  • Mounting Method: SADDLE BLADE
  • Mounting Position: UNIVERSAL
  • Drive End Mounting Type: COLLAR
  • 3 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Arm,windshield Wiper, cataloged under National Stock Number 2540-01-446-9491, is classified within Federal Supply Class 2540 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is United Technologies Corp Electro Systems Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references 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: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN2540-01-446-9491
Primary Part Number46-21
Item NameArm,windshield Wiper
FSC / FSG2540 / 25 — No Item Name Available
ManufacturerUnited Technologies Corp Electro Systems Inc
StatusACTIVE
AdjustabilityNONADJUSTABLE
Arm Length28.000 INCHES NOMINAL IN
Drive Adapter ExtensionNOT INCLUDED
Mounting MethodSADDLE BLADE
Mounting PositionUNIVERSAL
Drive End Mounting TypeCOLLAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5950-00-004-0220984660-1 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
5996-00-110-5909462-1 INTERCHANGEABLE
Amplifier,direct Current
General Microwave Corporation Div Kratos Microwave Electronics
2910-00-275-6757L63AL INTERCHANGEABLE
Carburetor,float
Wisconsin Motors, Llc
5950-00-303-54038007685 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Aviation and Missile Command
5920-00-350-91814621 INTERCHANGEABLE
Fuseholder,block
Cole Hersee Company
5330-00-615-14661040.000 INTERCHANGEABLE
Seal,plain Encased
Itt Jabsco Products
5960-00-912-3982SMC457355 INTERCHANGEABLE
Electron Tube
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4820-01-046-72694621-00 INTERCHANGEABLE
Disk,valve
Pentair Filtration Solutions, Llc
5985-01-049-3386 INTERCHANGEABLE
Dummy Load,electrical
5840-01-101-654646-2-1 INTERCHANGEABLE
Gear Train Assembly
Allard Nazarian Group, Inc. Dba Granite State Manufacturing
Cross-Reference Index
Part NumberManufacturer
LE721153-28 United Technologies Corp Electro Systems Inc (USA)
46-21 PRIMARY United Technologies Corp Electro Systems Inc (USA)
12956 United Technologies Corp Electro Systems Inc (USA)
Related Parts
5950-00-004-0220INTERCHANGEABLE
TRANSFORMER,POWER
984660-1
5996-00-110-5909INTERCHANGEABLE
AMPLIFIER,DIRECT CURRENT
462-1
2910-00-275-6757INTERCHANGEABLE
CARBURETOR,FLOAT
L63AL
5950-00-303-5403INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
8007685
5920-00-350-9181INTERCHANGEABLE
FUSEHOLDER,BLOCK
4621
5330-00-615-1466INTERCHANGEABLE
SEAL,PLAIN ENCASED
1040.000
5960-00-912-3982INTERCHANGEABLE
ELECTRON TUBE
SMC457355
4820-01-046-7269INTERCHANGEABLE
DISK,VALVE
4621-00
5985-01-049-3386INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
5840-01-101-6546INTERCHANGEABLE
GEAR TRAIN ASSEMBLY
46-2-1
4720-01-215-8744INTERCHANGEABLE
HOSE,NONMETALLIC
46-21
5340-01-235-1957INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
11606 ITEM 4621

Frequently Asked Questions

What is NSN 2540-01-446-9491?

NSN 2540-01-446-9491 is a Arm,windshield Wiper, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 2540 (No Item Name Available). Status: active.

What are the part numbers for NSN 2540-01-446-9491?

NSN 2540-01-446-9491 has 3 cross-referenced part numbers: LE721153-28 (United Technologies Corp Electro Systems Inc), 46-21 (United Technologies Corp Electro Systems Inc), 12956 (United Technologies Corp Electro Systems Inc).

What NSN replaces 2540-01-446-9491?

There are 12 known substitutes for 2540-01-446-9491: 5950-00-004-0220, 5996-00-110-5909, 2910-00-275-6757 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 46-21?

Key specifications for 46-21: Adjustability: NONADJUSTABLE; Arm Length: 28.000 INCHES NOMINAL IN; Drive Adapter Extension: NOT INCLUDED; Mounting Method: SADDLE BLADE. 7 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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