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Technical Data Sheet
PartsTable / MRO / 2821-1
2821-1 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 SWITCH,CODE INDICATING WHEEL is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thread_length: 0.500 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, nominal_thread_diameter: 0.138 INCHES IN, thread_quantity_per_inch: 32, thread_series_designator: UNIFIED NATIONAL COARSE (UNC). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-220-6421, 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
MRO→ MRO_GENERAL→ 2821-1
NSN: 6145-01-220-6421
FSC: 6145
CAGE: 92194 — BELDEN, INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thread_length0.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
nominal_thread_diameter0.138 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN6145-01-220-6421
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 2821-1 · 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 17
2821-1Interchangeable
interchangeable cross-reference
interchangeable
77C5208A0019Interchangeable
interchangeable cross-reference
interchangeable
2821Interchangeable
interchangeable cross-reference
interchangeable
446Interchangeable
Cord,expand-0-Cap
interchangeable
72K3Interchangeable
Cord,expand-0-Cap
interchangeable
36077Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2821-1?
2821-1 is a SWITCH,CODE INDICATING WHEEL. It is classified as a MRO (MRO_GENERAL).
What parts can replace 2821-1?
There are 17 known substitutes for 2821-1: 2821-1, 77C5208A0019, 2821 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2821-1?
2821-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-220-6421. 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