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Technical Data Sheet

RUB1344/3 — NUT,PLAIN,CAP

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

RUB1344/3: NUT,PLAIN,CAP.

The NUT,PLAIN,CAP is a the manufacturer industrial component. Key specifications include thread_series: UNIFIED NATIONAL COARSE (UNC), special_features: CLOSED END;STANDARD WASHER BASE, thread_direction: RIGHT-HAND, width_across_flats: 0.375 INCHES NOMINAL IN, nominal_thread_size: 0.190 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-243-5613, 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
RUB1344/3
NSN: 5310-01-243-5613
FSC: 5310 — Nuts and Washers
CAGE: K5974 — ROLLS-ROYCE PLC NAVAL MARINE (GBR)
SPECIFICATIONS
thread_seriesUNIFIED NATIONAL COARSE (UNC)
special_featuresCLOSED END;STANDARD WASHER BASE
thread_directionRIGHT-HAND
width_across_flats0.375 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES IN
NSN5310-01-243-5613
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: RUB1344/3 · 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
•
WIDTH ACROSS FLATS: 0.375 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.375 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
SPECIAL FEATURESCLOSED END;STANDARD WASHER BASE
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
295 417Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RUB1344/3?
RUB1344/3 is a NUT,PLAIN,CAP.
What parts can replace RUB1344/3?
There is 1 known substitute for RUB1344/3: 295 417. Substitute compatibility should be verified for your specific system.
What is the NSN for RUB1344/3?
RUB1344/3 is cataloged in the U.S. Government catalog under NSN 5310-01-243-5613. 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.