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K53031-3 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

K53031-3: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: ALUMINUM AND STEEL OVERALL, nut_style: PLATE, nut_height: 0.310 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN, nut_length: 0.302 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN, plate_width: 0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-507-2582, 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
K53031-3
NSN: 5310-01-507-2582
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
materialALUMINUM AND STEEL OVERALL
nut_stylePLATE
nut_height0.310 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
nut_length0.302 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
plate_width0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
locking_featureFREE-RUNNING ALL METAL DESIGN
plate_thickness0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
special_featuresSILVER PLATE THREADS, COUNTERBORE AND SEATING SURFACE ONLY
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 120.0 DEGREES MAXIMUM CAP
NSN5310-01-507-2582
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: K53031-3 · 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
•
PLATE THICKNESS: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
•
NUT LENGTH: 0.302 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
PLATE WIDTH: 0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
•
HOLE CONFIGURATION STYLE: CONFIGURATION E
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
LOCKING FEATURE: FREE-RUNNING ALL METAL DESIGN
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
NUT LENGTH0.302 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
PLATE WIDTH0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
HOLE CONFIGURATION STYLECONFIGURATION E
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
LOCKING FEATUREFREE-RUNNING ALL METAL DESIGN
NUT HEIGHT0.310 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
SPECIAL FEATURESSILVER PLATE THREADS, COUNTERBORE AND SEATING SURFACE ONLY
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 2
4051T52P04Reference document
Same NSN cross-reference
Reference document — Secondary reference
4051T52P05Same 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 K53031-3?
K53031-3 is a NUT,SELF-LOCKING,PLATE.
What parts can replace K53031-3?
There are 2 known substitutes for K53031-3: 4051T52P04, 4051T52P05. Substitute compatibility should be verified for your specific system.
What is the NSN for K53031-3?
K53031-3 is cataloged in the U.S. Government catalog under NSN 5310-01-507-2582. 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.