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90372A311 — NUT,PLAIN,INTERNAL WRENCHING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

90372A311: NUT,PLAIN,INTERNAL WRENCHING.

The NUT,PLAIN,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: INTERNAL WRENCHING, nut_height: 0.18 INCHES NOMINAL IN, nut_diameter: 0.19 INCHES NOMINAL IN, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-679-2488, 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
90372A311
NSN: 5310-01-679-2488
FSC: 5310 — Nuts and Washers
CAGE: 07BY4 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleINTERNAL WRENCHING
nut_height0.18 INCHES NOMINAL IN
nut_diameter0.19 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
nominal_thread_size0.1120 INCHES IN
width_between_flats0.125 INCHES NOMINAL IN
internal_drive_styleDOUBLE HEXAGON
end_item_identificationHOWITZER, 155MM M777E1 MM
thread_quantity_per_inch40
part_name_assigned_by_controlling_agencyNUT, ALLEN
NSN5310-01-679-2488
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90372A311 · 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 SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.1120 INCHES IN
•
NUT DIAMETER: 0.19 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.125 INCHES NOMINAL IN
•
NUT HEIGHT: 0.18 INCHES NOMINAL IN
•
INTERNAL DRIVE STYLE: DOUBLE HEXAGON
TECHNICAL CHARACTERISTICS
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.1120 INCHES IN
NUT DIAMETER0.19 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.125 INCHES NOMINAL IN
NUT HEIGHT0.18 INCHES NOMINAL IN
INTERNAL DRIVE STYLEDOUBLE HEXAGON
PART NAME ASSIGNED BY CONTROLLING AGENCYNUT, ALLEN
NUT STYLEINTERNAL WRENCHING
END ITEM IDENTIFICATIONHOWITZER, 155MM M777E1 MM
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
13061309Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90372A311?
90372A311 is a NUT,PLAIN,INTERNAL WRENCHING.
What parts can replace 90372A311?
There is 1 known substitute for 90372A311: 13061309. Substitute compatibility should be verified for your specific system.
What is the NSN for 90372A311?
90372A311 is cataloged in the U.S. Government catalog under NSN 5310-01-679-2488. 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.