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PartsTable / COMPONENT / 43-4778-040-160
43-4778-040-160 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,PLAIN,WING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: WING, thread_class: 2B, body_diameter: 0.687 INCHES NOMINAL IN, thread_series: UNIFIED NATIONAL COARSE (UNC), overall_height: 0.718 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-010-3129, 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
43-4778-040-160
NSN: 5310-00-010-3129
FSC: 5310
CAGE: 81336 — CHIEF OF ENGINEERS DEPT OF ARMY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleWING
thread_class2B
body_diameter0.687 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_height0.718 INCHES NOMINAL IN
thread_directionRIGHT-HAND
wing_spread_width1.375 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
thread_quantity_per_inch16
NSN5310-00-010-3129
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 43-4778-040-160 · 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
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
BODY DIAMETER: 0.687 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL OVERALL
•
WING SPREAD WIDTH: 1.375 INCHES NOMINAL IN
•
THREAD CLASS: 2B
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.375 INCHES IN
BODY DIAMETER0.687 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL OVERALL
WING SPREAD WIDTH1.375 INCHES NOMINAL IN
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
OVERALL HEIGHT0.718 INCHES NOMINAL IN
THREAD QUANTITY PER INCH16
NUT STYLEWING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
53716Interchangeable
interchangeable cross-reference
interchangeable
376MRC1Interchangeable
interchangeable cross-reference
interchangeable
103129Interchangeable
interchangeable cross-reference
interchangeable
5375-1Interchangeable
interchangeable cross-reference
interchangeable
5371-1Interchangeable
interchangeable cross-reference
interchangeable
R90-221-032Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 43-4778-040-160?
43-4778-040-160 is a NUT,PLAIN,WING.
What parts can replace 43-4778-040-160?
There are 8 known substitutes for 43-4778-040-160: 53716, 376MRC1, 103129 and 5 more. Substitute compatibility should be verified for your specific system.
Is 43-4778-040-160 still available?
43-4778-040-160 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026