121278 — RING,WEARING

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

121278: RING,WEARING.

The RING,WEARING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, body_style: PLAIN, corner_shape: SQUARE ALL CORNERS, overall_length: 0.812 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES RIGHT FACE, body_inside_diameter: 3.750 INCHES MINIMUM AND 3.751 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4320-00-081-8160, 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

121278

NSN: 4320-00-081-8160
NIINs: 000818160, 013074100
FSC: 4320 — Power and Hand Pumps
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING
body_style	PLAIN
corner_shape	SQUARE ALL CORNERS
overall_length	0.812 INCHES NOMINAL IN
surface_finish	125.0 MICROINCHES RIGHT FACE
body_inside_diameter	3.750 INCHES MINIMUM AND 3.751 INCHES MAXIMUM IN
body_outside_diameter	4.114 INCHES MINIMUM AND 4.115 INCHES MAXIMUM IN
NSN	4320-00-081-8160

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 125.0 MICROINCHES LEFT FACE

•

CORNER SHAPE: SQUARE ALL CORNERS

•

BODY STYLE: PLAIN

•

BODY OUTSIDE DIAMETER: 4.114 INCHES MINIMUM AND 4.115 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

SURFACE FINISH	125.0 MICROINCHES LEFT FACE
SURFACE FINISH	125.0 MICROINCHES INSIDE
SURFACE FINISH	125.0 MICROINCHES RIGHT FACE
SURFACE FINISH	20.0 MICROINCHES OUTSIDE
CORNER SHAPE	SQUARE ALL CORNERS
BODY STYLE	PLAIN
BODY OUTSIDE DIAMETER	4.114 INCHES MINIMUM AND 4.115 INCHES MAXIMUM IN
OVERALL LENGTH	0.812 INCHES NOMINAL IN
BODY INSIDE DIAMETER	3.750 INCHES MINIMUM AND 3.751 INCHES MAXIMUM IN
MATERIAL	STEEL CORROSION RESISTING

SUBSTITUTES & CROSS-REFERENCES 1

3T26763Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 121278?

121278 is a RING,WEARING.

What parts can replace 121278?

There is 1 known substitute for 121278: 3T26763. Substitute compatibility should be verified for your specific system.

What is the NSN for 121278?

121278 is cataloged in the U.S. Government catalog under NSN 4320-00-081-8160. This indicates validated use in U.S. government and defense supply chains.

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