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72424-918 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

72424-918: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.753 INCHES NOMINAL IN, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-183-1827, 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
72424-918
NSN: 5310-01-183-1827
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleDOUBLE HEXAGON
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.753 INCHES NOMINAL IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
special_features2 DRIVE POINTS,AT 180 DEGREE ANGLE HAVE BEEN OMITTED
thread_directionRIGHT-HAND
width_across_flats0.6875 INCHES NOMINAL IN
nominal_thread_size0.5625 INCHES IN
washer_outside_diameter0.880 INCHES NOMINAL IN
thread_quantity_per_inch18
NSN5310-01-183-1827
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 72424-918 · 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: 0.880 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.6875 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.5625 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.753 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER0.880 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.6875 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.5625 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
SPECIAL FEATURES2 DRIVE POINTS,AT 180 DEGREE ANGLE HAVE BEEN OMITTED
NUT STYLEDOUBLE HEXAGON
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 7
J626P09AReference document
Same NSN cross-reference
Reference document — Drawing number reference only
J626P09DReference document
Same NSN cross-reference
Reference document — Drawing number reference only
J626P09BReference document
Same NSN cross-reference
Reference document — Drawing number reference only
H39938-9Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VN1811DA098Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
J626P09CReference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 72424-918?
72424-918 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 72424-918?
There are 7 known substitutes for 72424-918: J626P09A, J626P09D, J626P09B and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 72424-918?
72424-918 is cataloged in the U.S. Government catalog under NSN 5310-01-183-1827. 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.