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N178742-3 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

N178742-3: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: PLATE, nut_height: 0.130 INCHES MAXIMUM IN, nut_length: 0.456 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT, plate_width: 0.194 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-073-9190, 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
N178742-3
NSN: 5310-00-073-9190
FSC: 5310 — Nuts and Washers
CAGE: K4358 — SAFRAN ELECTRICAL & POWER UK LIMITED (GBR)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_stylePLATE
nut_height0.130 INCHES MAXIMUM IN
nut_length0.456 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
plate_width0.194 INCHES MAXIMUM IN
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNJC
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.025 INCHES NOMINAL IN
thread_directionRIGHT-HAND
NSN5310-00-073-9190
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: N178742-3 · 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
•
LUBRICATION: DRY FILM LUBRICANT
•
PLATE THICKNESS: 0.025 INCHES NOMINAL IN
•
NUT LENGTH: 0.456 INCHES MAXIMUM IN
•
THREAD SERIES: UNJC
•
PLATE WIDTH: 0.194 INCHES MAXIMUM IN
•
TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
•
MOUNTING HOLE DIAMETER: 0.066 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
PLATE THICKNESS0.025 INCHES NOMINAL IN
NUT LENGTH0.456 INCHES MAXIMUM IN
THREAD SERIESUNJC
PLATE WIDTH0.194 INCHES MAXIMUM IN
TEMP RATING450.0 FAHRENHEIT NOMINAL DEGF
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
MOUNTING HOLE DIAMETER0.066 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.112 INCHES IN
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 3
990292-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MK1301-04Reference document
Same NSN cross-reference
Reference document — Secondary reference
950320-31Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is N178742-3?
N178742-3 is a NUT,SELF-LOCKING,PLATE.
What parts can replace N178742-3?
There are 3 known substitutes for N178742-3: 990292-12, MK1301-04, 950320-31. Substitute compatibility should be verified for your specific system.
What is the NSN for N178742-3?
N178742-3 is cataloged in the U.S. Government catalog under NSN 5310-00-073-9190. 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.