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CASTELLATEDNUT — NUT,PLAIN,CASTELLATED,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

CASTELLATEDNUT: NUT,PLAIN,CASTELLATED,HEXAGON.

The NUT,PLAIN,CASTELLATED,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 0.812 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-262-5391, 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
CASTELLATEDNUT
NSN: 5310-00-262-5391
NIINs: 002625391, 002659246, 002755508, 002755509
FSC: 5310 — Nuts and Washers
CAGE: 77250 — ALLIED PRODUCTS CORP PHEOLL MFG CO DIV (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleCASTELLATED, HEXAGON
nut_height0.812 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats1.062 INCHES NOMINAL IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch10
NSN5310-00-262-5391
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: CASTELLATEDNUT · 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: 0.625 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
NUT HEIGHT: 0.453 INCHES NOMINAL IN
•
NUT STYLE: CASTELLATED, HEXAGON
•
THREAD CLASS: 2B
•
THREAD QUANTITY PER INCH: 20
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.438 INCHES IN
NUT HEIGHT0.453 INCHES NOMINAL IN
NUT STYLECASTELLATED, HEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH20
MATERIALSTEEL OVERALL
BEARING SURFACE TYPEWASHER FACED
SUBSTITUTES & CROSS-REFERENCES 1
FFB571TYPEA4Reference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CASTELLATEDNUT?
CASTELLATEDNUT is a NUT,PLAIN,CASTELLATED,HEXAGON.
What parts can replace CASTELLATEDNUT?
There is 1 known substitute for CASTELLATEDNUT: FFB571TYPEA4. Substitute compatibility should be verified for your specific system.
What is the NSN for CASTELLATEDNUT?
CASTELLATEDNUT is cataloged in the U.S. Government catalog under NSN 5310-00-262-5391. 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.