PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 21578B
21578B ✓ Verified by PartsTable
— · WIRE CABLE
WHAT YOU NEED TO KNOW
Stranded for flexible routing, solid for conduit THHN/THWN dual-rated — check both tables
Ampacity depends on installation method
PRODUCT OVERVIEW

The WIRING HARNESS,BRANCHED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 SCREENING, duty_type: CONTINUOUS, body_shape: ROUND, overall_width: 3.500 INCHES NOMINAL IN, overall_height: 2.688 INCHES NOMINAL IN, overall_length: 11.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6150-01-096-2400, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
21578B
NSN: 6150-01-096-2400
FSC: 6150
CAGE: 30377 — SMITHS AEROSPACE, INC., ELECTRONIC SYSTEMS-GRAND RAPIDS (USA)
SPECIFICATIONS
materialSTEEL COMP 304 SCREENING
duty_typeCONTINUOUS
body_shapeROUND
coil_quantity1
overall_width3.500 INCHES NOMINAL IN
overall_height2.688 INCHES NOMINAL IN
overall_length11.125 INCHES NOMINAL IN
overall_diameter6.000 INCHES NOMINAL IN
special_featuresNAME ASSIGNED BY CONTROLLING AGENCY - FILTER SCREEN ASSEMBLY
winding_quantity1
surface_treatmentALUMINUM ALLOY
device_design_typeDIRECTIONAL VANE
NSN6150-01-096-2400
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 21578B · OEM ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
21578Interchangeable
interchangeable cross-reference
interchangeable
5945PL0921435Interchangeable
interchangeable cross-reference
interchangeable
400SXInterchangeable
interchangeable cross-reference
interchangeable
477Interchangeable
interchangeable cross-reference
interchangeable
5209252Interchangeable
interchangeable cross-reference
interchangeable
21578-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21578B?
21578B is a WIRING HARNESS,BRANCHED.
What parts can replace 21578B?
There are 6 known substitutes for 21578B: 21578, 5945PL0921435, 400SX and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21578B?
21578B is cataloged in the Federal Logistics Information System (FLIS) under NSN 6150-01-096-2400. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026