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3978P11 — SPACER,RING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

3978P11: SPACER,RING.

The SPACER,RING is a the manufacturer industrial component. Key specifications include material: STEEL, inside_diameter: 2.437 INCHES MINIMUM AND 2.469 INCHES MAXIMUM IN, outside_diameter: 3.172 INCHES MINIMUM AND 3.188 INCHES MAXIMUM IN, special_features: BEARING SURFACES MUST BE FLAT AND PARALLEL WITHIN 0.0002 IN. TIR IN, overall_thickness: 0.24785 INCHES MINIMUM AND 0.24815 INCHES MAXIMUM IN, criticality_code_justification: ADUM.

This part is cataloged in the U.S. Government catalog under NSN 5365-00-352-9191, 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
3978P11
NSN: 5365-00-352-9191
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 27618 — TAYLOR MACHINE WORKS INC (USA)
SPECIFICATIONS
materialSTEEL
inside_diameter2.437 INCHES MINIMUM AND 2.469 INCHES MAXIMUM IN
outside_diameter3.172 INCHES MINIMUM AND 3.188 INCHES MAXIMUM IN
special_featuresBEARING SURFACES MUST BE FLAT AND PARALLEL WITHIN 0.0002 IN. TIR IN
overall_thickness0.24785 INCHES MINIMUM AND 0.24815 INCHES MAXIMUM IN
criticality_code_justificationADUM
NSN5365-00-352-9191
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPACER,RING TITLE COMPONENT PN 3978P11 MFR SPACER,RING
KEY FEATURES
•
OUTSIDE DIAMETER: 3.172 INCHES MINIMUM AND 3.188 INCHES MAXIMUM IN
•
OVERALL THICKNESS: 0.24785 INCHES MINIMUM AND 0.24815 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: ADUM
•
INSIDE DIAMETER: 2.437 INCHES MINIMUM AND 2.469 INCHES MAXIMUM IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER3.172 INCHES MINIMUM AND 3.188 INCHES MAXIMUM IN
OVERALL THICKNESS0.24785 INCHES MINIMUM AND 0.24815 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONADUM
INSIDE DIAMETER2.437 INCHES MINIMUM AND 2.469 INCHES MAXIMUM IN
SPECIAL FEATURESBEARING SURFACES MUST BE FLAT AND PARALLEL WITHIN 0.0002 IN. TIR IN
MATERIALSTEEL
OTHER ITEMS IN FSC 5365 — Bushings, Rings, Shims, and Spacers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5365-00-000-6078 5365-00-000-7436 5365-00-001-1292 5365-00-001-1365 5365-00-001-1841 5365-00-001-1915 5365-00-001-1916 5365-00-001-1940
SUBSTITUTES & CROSS-REFERENCES 2
69274R1Reference document
Same NSN cross-reference
Reference document — Secondary reference
2203N1080Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 3978P11?
3978P11 is a SPACER,RING.
What parts can replace 3978P11?
There are 2 known substitutes for 3978P11: 69274R1, 2203N1080. Substitute compatibility should be verified for your specific system.
What is the NSN for 3978P11?
3978P11 is cataloged in the U.S. Government catalog under NSN 5365-00-352-9191. 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.