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PartsTable / COMPONENT / 10-78363
10-78363 ✓ 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,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL LOCKING INSERT, nut_style: HEXAGON, nut_height: 0.172 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-274-8867, 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
10-78363
NSN: 5310-00-274-8867
FSC: 5310
CAGE: 77820 — AMPHENOL CORP DIV AMPHENOL AEROSPACE OPERATIONS (USA)
SPECIFICATIONS
materialSTEEL LOCKING INSERT
nut_styleHEXAGON
nut_height0.172 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
width_across_flats0.312 INCHES NOMINAL IN
nominal_thread_size0.138 INCHES IN
bearing_surface_typeFLAT
thread_quantity_per_inch32
NSN5310-00-274-8867
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10-78363 · 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
•
BEARING SURFACE TYPE: FLAT
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
THREAD CLASS: 2B
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 0.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPEFLAT
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.138 INCHES IN
THREAD QUANTITY PER INCH32
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
MATERIALSTEEL LOCKING INSERT
NUT HEIGHT0.172 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
1801-074Interchangeable
interchangeable cross-reference
interchangeable
52ZE074Interchangeable
interchangeable cross-reference
interchangeable
AN363-714Interchangeable
interchangeable cross-reference
interchangeable
N25027Interchangeable
interchangeable cross-reference
interchangeable
42ND36-070Interchangeable
interchangeable cross-reference
interchangeable
1325-02Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10-78363?
10-78363 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 10-78363?
There are 17 known substitutes for 10-78363: 1801-074, 52ZE074, AN363-714 and 14 more. Substitute compatibility should be verified for your specific system.
Is 10-78363 still available?
10-78363 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