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253574 — NUT ASSEMBLY,SELF-LOCKING,GANG C

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

253574: NUT ASSEMBLY,SELF-LOCKING,GANG C.

NUT ASSEMBLY,SELF-LOCKING,GANG C. Key specifications include radius: 19.840 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING CHANNEL, nut_style: GANG CHANNEL, SELF LOCKING, nut_spacing: 1.0135 INCHES NOMINAL IN, nut_quantity: 29, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-639-0419, 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
253574
NSN: 5310-00-639-0419
NIINs: 006390419, 016412286
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
radius19.840 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING CHANNEL
nut_styleGANG CHANNEL, SELF LOCKING
nut_spacing1.0135 INCHES NOMINAL IN
nut_quantity29
thread_class3B
channel_styleRADIUS TYPE
overall_width0.594 INCHES NOMINAL IN
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
features_providedFLOATING NUT
NSN5310-00-639-0419
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 253574 · 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
•
RADIUS: 19.840 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
PRECIOUS MATERIAL: SILVER
•
NUT QUANTITY: 29
•
REMOVABLE NUT MANUFACTURER PART NUMBER: 240602
•
FEATURES PROVIDED: FLOATING NUT
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
RADIUS19.840 INCHES NOMINAL IN
THREAD SERIESUNF
PRECIOUS MATERIALSILVER
NUT QUANTITY29
REMOVABLE NUT MANUFACTURER PART NUMBER240602
OVERALL WIDTH0.594 INCHES NOMINAL IN
FEATURES PROVIDEDFLOATING NUT
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
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 253574?
253574 is a NUT ASSEMBLY,SELF-LOCKING,GANG C.
What is the NSN for 253574?
253574 is cataloged in the U.S. Government catalog under NSN 5310-00-639-0419. 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.