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494677 — NUT,SELF-LOCKING,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

494677: NUT,SELF-LOCKING,CLINCH.

The NUT,SELF-LOCKING,CLINCH is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: CLINCH, nut_height: 0.410 INCHES NOMINAL IN, nut_diameter: 0.450 INCHES NOMINAL IN, pilot_length: 0.125 INCHES NOMINAL IN, thread_class: 2B. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-786-2501, 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
494677
NSN: 5310-00-786-2501
NIINs: 007862501, 009410184
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleCLINCH
nut_height0.410 INCHES NOMINAL IN
nut_diameter0.450 INCHES NOMINAL IN
pilot_length0.125 INCHES NOMINAL IN
thread_class2B
thread_seriesUNS
pilot_diameter0.305 INCHES NOMINAL IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
special_features0.156 IN. LG BOSS OPPISITE CLINCHING END IN
thread_directionRIGHT-HAND
nominal_thread_size0.190 INCHES IN
NSN5310-00-786-2501
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 494677 · 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
SUBSTITUTES & CROSS-REFERENCES 2
618106Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
K29110-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 494677?
494677 is a NUT,SELF-LOCKING,CLINCH.
What parts can replace 494677?
There are 2 known substitutes for 494677: 618106, K29110-4. Substitute compatibility should be verified for your specific system.
What is the NSN for 494677?
494677 is cataloged in the U.S. Government catalog under NSN 5310-00-786-2501. 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.