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03A163-3-240 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

03A163-3-240: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING LOCKING INSERT, nut_style: PLATE, nut_height: 2.380 INCHES MINIMUM AND 2.420 INCHES MAXIMUM IN, nut_length: 0.975 INCHES MINIMUM AND 0.995 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT, plate_width: 0.386 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-348-7126, 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
03A163-3-240
NSN: 5310-01-348-7126
FSC: 5310 — Nuts and Washers
CAGE: 76823 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN IS DIV NORTHROP GRUMMAN AERONAUTICS SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING LOCKING INSERT
nut_stylePLATE
nut_height2.380 INCHES MINIMUM AND 2.420 INCHES MAXIMUM IN
nut_length0.975 INCHES MINIMUM AND 0.995 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
plate_width0.386 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class2B
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
NSN5310-01-348-7126
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 03A163-3-240 · 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
•
LUBRICATION: DRY FILM LUBRICANT
•
PLATE THICKNESS: 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
•
NUT LENGTH: 0.975 INCHES MINIMUM AND 0.995 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
•
THREAD SERIES: UNF
•
PLATE WIDTH: 0.386 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
PLATE THICKNESS0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
NUT LENGTH0.975 INCHES MINIMUM AND 0.995 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
THREAD SERIESUNF
PLATE WIDTH0.386 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-A-12545 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT
MOUNTING HOLE DIAMETER0.148 INCHES NOMINAL IN
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
WSI-4-24NWReference document
Same NSN cross-reference
Reference document — Secondary reference
WSI-24WReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 03A163-3-240?
03A163-3-240 is a NUT,SELF-LOCKING,PLATE.
What parts can replace 03A163-3-240?
There are 2 known substitutes for 03A163-3-240: WSI-4-24NW, WSI-24W. Substitute compatibility should be verified for your specific system.
What is the NSN for 03A163-3-240?
03A163-3-240 is cataloged in the U.S. Government catalog under NSN 5310-01-348-7126. 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.