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5178020 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5178020: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, nut_style: HEXAGON, nut_height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UN, hardness_rating: 60.0 ROCKWELL B NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-528-2014, 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
5178020
NSN: 5310-01-528-2014
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
nut_styleHEXAGON
nut_height0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
thread_class2B
thread_seriesUN
hardness_rating60.0 ROCKWELL B NOMINAL
thread_directionRIGHT-HAND
width_across_flats0.875 INCHES NOMINAL IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch28
NSN5310-01-528-2014
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5178020 · 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: 0.875 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
HARDNESS RATING: 60.0 ROCKWELL B NOMINAL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
NUT HEIGHT: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.875 INCHES NOMINAL IN
THREAD SERIESUN
HARDNESS RATING60.0 ROCKWELL B NOMINAL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.750 INCHES IN
NUT HEIGHT0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH28
MATERIALSTEEL COMP 316 OVERALL
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5178020?
5178020 is a NUT,PLAIN,HEXAGON.
What is the NSN for 5178020?
5178020 is cataloged in the U.S. Government catalog under NSN 5310-01-528-2014. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.