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12278965 — NUT,PLAIN,KNURLED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12278965: NUT,PLAIN,KNURLED.

The NUT,PLAIN,KNURLED is a the manufacturer industrial component. Key specifications include material: ALUMINUM OVERALL, nut_style: KNURLED, knurl_width: 3.188 INCHES NOMINAL IN, nut_thickness: 3.065 INCHES NOMINAL IN, thread_series: ACME, small_end_length: 2.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-079-2978, 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
12278965
NSN: 5310-01-079-2978
FSC: 5310 — Nuts and Washers
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialALUMINUM OVERALL
nut_styleKNURLED
knurl_width3.188 INCHES NOMINAL IN
nut_thickness3.065 INCHES NOMINAL IN
thread_seriesACME
small_end_length2.625 INCHES NOMINAL IN
special_featuresUSED ON THE M1
thread_directionRIGHT-HAND
small_end_diameter2.625 INCHES NOMINAL IN
nominal_thread_size2.750 INCHES IN
NSN5310-01-079-2978
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12278965 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD SERIES: ACME
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 2.750 INCHES IN
•
NUT THICKNESS: 3.065 INCHES NOMINAL IN
•
SMALL END LENGTH: 2.625 INCHES NOMINAL IN
•
SMALL END DIAMETER: 2.625 INCHES NOMINAL IN
•
NUT STYLE: KNURLED
TECHNICAL CHARACTERISTICS
THREAD SERIESACME
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE2.750 INCHES IN
NUT THICKNESS3.065 INCHES NOMINAL IN
SMALL END LENGTH2.625 INCHES NOMINAL IN
SMALL END DIAMETER2.625 INCHES NOMINAL IN
SPECIAL FEATURESUSED ON THE M1
NUT STYLEKNURLED
MATERIALALUMINUM OVERALL
KNURL WIDTH3.188 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12278965?
12278965 is a NUT,PLAIN,KNURLED.
What is the NSN for 12278965?
12278965 is cataloged in the U.S. Government catalog under NSN 5310-01-079-2978. 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.