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PartsTable / COMPONENT / AS5178J08
AS5178J08 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, nut_style: HEXAGON, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), part_name_assigned_by_controlling_agency: NUT,PLAIN,HEXAGON. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-998-5023, 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
AS5178J08
NSN: 5310-00-998-5023
FSC: 5310
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
nut_styleHEXAGON
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
part_name_assigned_by_controlling_agencyNUT,PLAIN,HEXAGON
NSN5310-00-998-5023
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AS5178J08 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
COUNTERSINK ANGLE: 90.0 DEGREES NOMINAL NUT
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
THREAD QUANTITY PER INCH: 16
•
THREAD SERIES: UNF
•
MATERIAL: STEEL COMP 304 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
COUNTERSINK ANGLE90.0 DEGREES NOMINAL NUT
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
NOMINAL THREAD SIZE0.750 INCHES IN
THREAD QUANTITY PER INCH16
THREAD SERIESUNF
MATERIALSTEEL COMP 304 OVERALL
THREAD CLASS3B
END ITEM IDENTIFICATIONC-5 AIRCRAFT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
AN924-8Interchangeable
interchangeable cross-reference
interchangeable
AS5178-08Interchangeable
interchangeable cross-reference
interchangeable
477 691Interchangeable
interchangeable cross-reference
interchangeable
1-012-1929Interchangeable
interchangeable cross-reference
interchangeable
AS5178J08Interchangeable
interchangeable cross-reference
interchangeable
AN924-8JInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS5178J08?
AS5178J08 is a NUT,PLAIN,HEXAGON.
What parts can replace AS5178J08?
There are 11 known substitutes for AS5178J08: AN924-8, AS5178-08, 477 691 and 8 more. Substitute compatibility should be verified for your specific system.
Is AS5178J08 still available?
AS5178J08 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