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23009249 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

23009249: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-322-8737, 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
23009249
NSN: 5310-01-322-8737
NIINs: 013228737, 014638652
FSC: 5310 — Nuts and Washers
CAGE: 06710 — VALLEY-TODECO, INC. DBA ARCONIC FASTENING SYSTEMS (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleHEXAGON
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
precious_materialSILVER
surface_treatmentSILVER OVERALL
width_across_flats0.347 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES IN
NSN5310-01-322-8737
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 23009249 · 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
•
WASHER OUTSIDE DIAMETER: 0.560 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.347 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
PRECIOUS MATERIAL: SILVER
•
WASHER THICKNESS: 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.560 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.347 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
PRECIOUS MATERIALSILVER
WASHER THICKNESS0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
SURFACE TREATMENTSILVER OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
5310PL2047887Reference document
Same NSN cross-reference
Reference document — Informative reference only
VCV0011Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BH00784-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 23009249?
23009249 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 23009249?
There are 3 known substitutes for 23009249: 5310PL2047887, VCV0011, BH00784-4. Substitute compatibility should be verified for your specific system.
What is the NSN for 23009249?
23009249 is cataloged in the U.S. Government catalog under NSN 5310-01-322-8737. 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.