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2194425 — NUT,SELF-LOCKING,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2194425: NUT,SELF-LOCKING,ROUND.

The NUT,SELF-LOCKING,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OVERALL, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT (UNJ), nominal_thread_size: 3.125 INCHES IN, end_item_identification: J52 ENGINE, thread_quantity_per_inch: 16. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-381-0971, 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
2194425
NSN: 5310-01-381-0971
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT (UNJ)
nominal_thread_size3.125 INCHES IN
end_item_identificationJ52 ENGINE
thread_quantity_per_inch16
NSN5310-01-381-0971
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2194425 · 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: UNIFIED NATIONAL JOINT (UNJ)
•
NOMINAL THREAD SIZE: 3.125 INCHES IN
•
THREAD CLASS: 3B
•
THREAD QUANTITY PER INCH: 16
•
MATERIAL: STEEL COMP 8740 OVERALL
TECHNICAL CHARACTERISTICS
THREAD SERIESUNIFIED NATIONAL JOINT (UNJ)
NOMINAL THREAD SIZE3.125 INCHES IN
THREAD CLASS3B
END ITEM IDENTIFICATIONJ52 ENGINE
THREAD QUANTITY PER INCH16
MATERIALSTEEL COMP 8740 OVERALL
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2194425?
2194425 is a NUT,SELF-LOCKING,ROUND.
What is the NSN for 2194425?
2194425 is cataloged in the U.S. Government catalog under NSN 5310-01-381-0971. 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.