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21804 — BRUSH,ELECTRICAL CONTACT

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

21804: BRUSH,ELECTRICAL CONTACT.

The BRUSH,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include end_item_identification: HERCULES C-130. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-115-1282, 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→ 21804
NSN: 3120-00-115-1282
NIINs: 001151282, 002798451, 008158381, 008594156, 011696506, 014190487
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 60399 — REGAL-BELOIT CORPORATION DBA FASCO GROUP DIV CASSVILLE DIVISION (USA)
SPECIFICATIONS
end_item_identificationHERCULES C-130
NSN3120-00-115-1282
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 21804 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CORNER SHAPE: SQUARE INSIDE RIGHT CORNER
•
FLANGE OUTSIDE DIAMETER: 0.9900 INCHES MINIMUM AND 1.0100 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.8020 INCHES MINIMUM AND 0.8220 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE INSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
CORNER SHAPEROUND LEFT FLANGE BODY CORNER
FLANGE OUTSIDE DIAMETER0.9900 INCHES MINIMUM AND 1.0100 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.8020 INCHES MINIMUM AND 0.8220 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1113 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21804?
21804 is a BRUSH,ELECTRICAL CONTACT. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 21804?
21804 is cataloged in the U.S. Government catalog under NSN 3120-00-115-1282. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.