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MF49400-4 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MF49400-4: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include nut_style: PLATE, nut_height: 0.323 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN, plate_width: 0.290 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), plate_thickness: 0.110 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-271-9028, 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
MF49400-4
NSN: 5310-01-271-9028
FSC: 5310 — Nuts and Washers
CAGE: 15663 — WABASH INSTRUMENT CORP (USA)
SPECIFICATIONS
nut_stylePLATE
nut_height0.323 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
plate_width0.290 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
plate_thickness0.110 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
nominal_thread_size0.250 INCHES IN
thread_quantity_per_inch28
NSN5310-01-271-9028
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MF49400-4 · 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: 0.110 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
PLATE WIDTH: 0.290 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NUT HEIGHT: 0.323 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
•
NUT STYLE: PLATE
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.110 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
PLATE WIDTH0.290 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
NUT HEIGHT0.323 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
NUT STYLEPLATE
THREAD CLASS2B
THREAD QUANTITY PER INCH28
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
9134M65P02Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 MF49400-4?
MF49400-4 is a NUT,SELF-LOCKING,PLATE.
What parts can replace MF49400-4?
There is 1 known substitute for MF49400-4: 9134M65P02. Substitute compatibility should be verified for your specific system.
What is the NSN for MF49400-4?
MF49400-4 is cataloged in the U.S. Government catalog under NSN 5310-01-271-9028. 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.