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AS5178-16 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

AS5178-16: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OR STEEL COMP 4140 OVERALL, nut_style: HEXAGON, nut_height: 0.406 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT (UNJ), thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-529-3036, 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
AS5178-16
NSN: 5310-01-529-3036
FSC: 5310 — Nuts and Washers
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OR STEEL COMP 4140 OVERALL
nut_styleHEXAGON
nut_height0.406 INCHES NOMINAL IN
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT (UNJ)
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats1.613 INCHES MINIMUM AND 1.630 INCHES MAXIMUM IN
nominal_thread_size1.312 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch12
material_document_and_classificationAMS 6370 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-529-3036
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AS5178-16 · 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
•
WIDTH ACROSS FLATS: 1.613 INCHES MINIMUM AND 1.630 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TYPE II0.QQ-P-416, TYPE II0CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT (UNJ)
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6370 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.312 INCHES IN
•
NUT HEIGHT: 0.406 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.613 INCHES MINIMUM AND 1.630 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE II0.QQ-P-416, TYPE II0CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT (UNJ)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6370 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.312 INCHES IN
NUT HEIGHT0.406 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
NUT STYLEHEXAGON
THREAD CLASS3B
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
5310PL2045718Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS5178-16?
AS5178-16 is a NUT,PLAIN,HEXAGON.
What parts can replace AS5178-16?
There is 1 known substitute for AS5178-16: 5310PL2045718. Substitute compatibility should be verified for your specific system.
What is the NSN for AS5178-16?
AS5178-16 is cataloged in the U.S. Government catalog under NSN 5310-01-529-3036. This indicates validated use in U.S. government and defense supply chains.
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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.