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9978829 — 9978829

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

9978829: 9978829.

The 9978829 is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, inside_width: 0.255 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN, overall_depth: 0.500 INCHES NOMINAL IN, outside_diameter: 3.750 INCHES NOMINAL IN, special_features: ONE CORNER OFF SHAFT CHAMFERED, style_designator: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5355-00-070-2683, 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
9978829
NSN: 5355-00-070-2683
FSC: 5355 — Knobs and Pointers
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY
inside_width0.255 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN
overall_depth0.500 INCHES NOMINAL IN
outside_diameter3.750 INCHES NOMINAL IN
special_featuresONE CORNER OFF SHAFT CHAMFERED
style_designatorROUND
attachment_methodPRESS FIT
overall_thickness0.500 INCHES NOMINAL IN
shaft_accommodation_styleSQUARE WITH DIAGONAL CORNER
gripping_surface_conditionSMOOTH
inside_width_across_corners0.328 INCHES MINIMUM AND 0.331 INCHES MAXIMUM IN
NSN5355-00-070-2683
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 9978829 TITLE COMPONENT PN 9978829 MFR 9978829
KEY FEATURES
•
INSIDE WIDTH: 0.255 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN
•
SHAFT ACCOMMODATION STYLE: SQUARE WITH DIAGONAL CORNER
•
OVERALL THICKNESS: 0.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND
•
OUTSIDE DIAMETER: 3.750 INCHES NOMINAL IN
•
INSIDE WIDTH ACROSS CORNERS: 0.328 INCHES MINIMUM AND 0.331 INCHES MAXIMUM IN
•
GRIPPING SURFACE CONDITION: SMOOTH
TECHNICAL CHARACTERISTICS
INSIDE WIDTH0.255 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN
SHAFT ACCOMMODATION STYLESQUARE WITH DIAGONAL CORNER
OVERALL THICKNESS0.500 INCHES NOMINAL IN
STYLE DESIGNATORROUND
OUTSIDE DIAMETER3.750 INCHES NOMINAL IN
INSIDE WIDTH ACROSS CORNERS0.328 INCHES MINIMUM AND 0.331 INCHES MAXIMUM IN
GRIPPING SURFACE CONDITIONSMOOTH
SPECIAL FEATURESONE CORNER OFF SHAFT CHAMFERED
MATERIALCOPPER ALLOY
ATTACHMENT METHODPRESS FIT
OTHER ITEMS IN FSC 5355 — Knobs and Pointers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5355-00-000-5777 5355-00-001-2029 5355-00-001-2403 5355-00-001-4109 5355-00-001-4677 5355-00-001-4724 5355-00-001-4730 5355-00-001-4734
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9978829?
9978829 is a 9978829.
What is the NSN for 9978829?
9978829 is cataloged in the U.S. Government catalog under NSN 5355-00-070-2683. 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.