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52389-428 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

52389-428: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_height: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, thread_class: 3B, locking_feature: PREVAILING TORQUE ALL METAL DESIGN, thread_direction: RIGHT-HAND, width_across_flats: 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-172-6922, 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
52389-428
NSN: 5310-00-172-6922
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_height0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
thread_class3B
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch28
NSN5310-00-172-6922
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 52389-428 · 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
•
WIDTH ACROSS FLATS: 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
•
NUT HEIGHT: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
•
THREAD CLASS: 3B
•
THREAD QUANTITY PER INCH: 28
•
MATERIAL: STEEL OVERALL
•
BEARING SURFACE TYPE: CHAMFERED
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
THREAD CLASS3B
THREAD QUANTITY PER INCH28
MATERIALSTEEL OVERALL
BEARING SURFACE TYPECHAMFERED
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 1
6782887-428Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 52389-428?
52389-428 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 52389-428?
There is 1 known substitute for 52389-428: 6782887-428. Substitute compatibility should be verified for your specific system.
What is the NSN for 52389-428?
52389-428 is cataloged in the U.S. Government catalog under NSN 5310-00-172-6922. 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.