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PartsTable / COMPONENT / AS5178-08
AS5178-08 ✓ 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 OVERALL, nut_style: HEXAGON, nut_height: 0.313 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-208-5775, 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
AS5178-08
NSN: 5310-00-208-5775
FSC: 5310
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.313 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_across_flats1.000 INCHES NOMINAL IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch16
NSN5310-00-208-5775
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AS5178-08 · 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
•
THREAD QUANTITY PER INCH: 16
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD SERIES: UNF
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
NUT HEIGHT: 0.313 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
NUT STYLE: HEXAGON
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH16
BEARING SURFACE TYPECHAMFERED
THREAD SERIESUNF
NOMINAL THREAD SIZE0.750 INCHES IN
NUT HEIGHT0.313 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
NUT STYLEHEXAGON
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
WIDTH ACROSS FLATS1.000 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
5008-8Interchangeable
interchangeable cross-reference
interchangeable
70033Interchangeable
interchangeable cross-reference
interchangeable
65-5015-5Interchangeable
interchangeable cross-reference
interchangeable
B50088Interchangeable
interchangeable cross-reference
interchangeable
10121929Interchangeable
interchangeable cross-reference
interchangeable
AN924-8JInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS5178-08?
AS5178-08 is a NUT,PLAIN,HEXAGON.
What parts can replace AS5178-08?
There are 18 known substitutes for AS5178-08: 5008-8, 70033, 65-5015-5 and 15 more. Substitute compatibility should be verified for your specific system.
Is AS5178-08 still available?
AS5178-08 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