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9012881-5 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

9012881-5: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include nut_diameter: 3.500 INCHES NOMINAL IN, thread_class: 3B, nut_thickness: 4.125 INCHES NOMINAL IN, thread_series: UN, thread_direction: RIGHT-HAND, width_across_flats: 1.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-394-8252, 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
9012881-5
NSN: 5310-00-394-8252
FSC: 5310 — Nuts and Washers
CAGE: 24446 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
nut_diameter3.500 INCHES NOMINAL IN
thread_class3B
nut_thickness4.125 INCHES NOMINAL IN
thread_seriesUN
thread_directionRIGHT-HAND
width_across_flats1.875 INCHES NOMINAL IN
nominal_thread_size2.250 INCHES IN
thread_quantity_per_inch8
NSN5310-00-394-8252
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9012881-5 · 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
•
WIDTH ACROSS FLATS: 1.875 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 2.250 INCHES IN
•
NUT DIAMETER: 3.500 INCHES NOMINAL IN
•
NUT THICKNESS: 4.125 INCHES NOMINAL IN
•
THREAD CLASS: 3B
•
THREAD QUANTITY PER INCH: 8
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.875 INCHES NOMINAL IN
THREAD SERIESUN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE2.250 INCHES IN
NUT DIAMETER3.500 INCHES NOMINAL IN
NUT THICKNESS4.125 INCHES NOMINAL IN
THREAD CLASS3B
THREAD QUANTITY PER INCH8
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 9
WW8676578PC18Reference document
Same NSN cross-reference
Reference document — Secondary reference
WW8676505PC27Reference document
Same NSN cross-reference
Reference document — Secondary reference
WW8008625PC21Reference document
Same NSN cross-reference
Reference document — Secondary reference
WW5939303PC21Reference document
Same NSN cross-reference
Reference document — Secondary reference
PL111L126PC95Reference document
Same NSN cross-reference
Reference document — Secondary reference
T9012881PC5Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9012881-5?
9012881-5 is a NUT,PLAIN,ROUND.
What parts can replace 9012881-5?
There are 9 known substitutes for 9012881-5: WW8676578PC18, WW8676505PC27, WW8008625PC21 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9012881-5?
9012881-5 is cataloged in the U.S. Government catalog under NSN 5310-00-394-8252. 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.