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121276 — RING,WEARING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

121276: RING,WEARING.

The RING,WEARING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN, outside_diameter: 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN, surface_treatment: ZINC AND CADMIUM OVERALL, material_thickness: 0.125 INCHES NOMINAL IN, external_keyway_width: 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4320-00-081-8159, 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
121276
NSN: 4320-00-081-8159
NIINs: 000818159, 005501499
FSC: 4320 — Power and Hand Pumps
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
outside_diameter0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN
surface_treatmentZINC AND CADMIUM OVERALL
material_thickness0.125 INCHES NOMINAL IN
external_keyway_width0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
external_keyway_length0.125 INCHES NOMINAL IN
external_keyway_quantity1
NSN4320-00-081-8159
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,WEARING TITLE COMPONENT PN 121276 MFR RING,WEARING
KEY FEATURES
•
SURFACE FINISH: 63.0 MICROINCHES INSIDE
•
CORNER SHAPE: CHAMFERED INSIDE LEFT CORNER
•
CHAMFER LENGTH: 0.062 INCHES NOMINAL INSIDE RIGHT CORNER IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES INSIDE
SURFACE FINISH8.0 MICROINCHES OUTSIDE
CORNER SHAPECHAMFERED INSIDE LEFT CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
CORNER SHAPECHAMFERED INSIDE RIGHT CORNER
CHAMFER LENGTH0.062 INCHES NOMINAL INSIDE RIGHT CORNER IN
CHAMFER LENGTH0.094 INCHES NOMINAL INSIDE LEFT CORNER IN
BODY STYLEPLAIN
BODY OUTSIDE DIAMETER3.361 INCHES MINIMUM AND 3.362 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
3T26762Reference 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 121276?
121276 is a RING,WEARING.
What parts can replace 121276?
There is 1 known substitute for 121276: 3T26762. Substitute compatibility should be verified for your specific system.
What is the NSN for 121276?
121276 is cataloged in the U.S. Government catalog under NSN 4320-00-081-8159. 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.