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721-7068598-47 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

721-7068598-47: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY R-405 NUT, nut_style: HEXAGON, nut_height: 0.575 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-245-3504, 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
721-7068598-47
NSN: 5310-00-245-3504
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY R-405 NUT
nut_styleHEXAGON
nut_height0.575 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES NOMINAL NUT
width_across_flats0.741 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
nominal_thread_size0.500 INCHES IN
bearing_surface_typeCHAMFERED
NSN5310-00-245-3504
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 721-7068598-47 · 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: 0.741 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D4066,COMP A,TYPE 1 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.741 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
BEARING SURFACE FINISH125.0 MICROINCHES
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D4066,COMP A,TYPE 1 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.500 INCHES IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
NUT HEIGHT0.575 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
COUNTERSINK ANGLE88.0 DEGREES NOMINAL NUT
SUBSTITUTES & CROSS-REFERENCES 9
595-6405353-4016Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS17828-8CReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5486646 ITEM F27Reference document
Same NSN cross-reference
Reference document — Secondary reference
751-64025202-35/42Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
111-8500406 ITEM 8Reference document
Same NSN cross-reference
Reference document — Secondary reference
6640222 FIND 15Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 721-7068598-47?
721-7068598-47 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 721-7068598-47?
There are 9 known substitutes for 721-7068598-47: 595-6405353-4016, MS17828-8C, 5486646 ITEM F27 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 721-7068598-47?
721-7068598-47 is cataloged in the U.S. Government catalog under NSN 5310-00-245-3504. 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.