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68A581612-2003 — NUT,SELF-LOCKING,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

68A581612-2003: NUT,SELF-LOCKING,ROUND.

The NUT,SELF-LOCKING,ROUND is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, nut_style: ROUND, nut_diameter: 3.315 INCHES NOMINAL IN, thread_class: 3B, nut_thickness: 0.500 INCHES NOMINAL IN, thread_series: UN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-060-1772, 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
68A581612-2003
NSN: 5310-01-060-1772
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
nut_styleROUND
nut_diameter3.315 INCHES NOMINAL IN
thread_class3B
nut_thickness0.500 INCHES NOMINAL IN
thread_seriesUN
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
drive_point_depth0.060 INCHES NOMINAL IN
drive_point_width0.500 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
small_end_diameter2.774 INCHES MINIMUM AND 2.804 INCHES MAXIMUM IN
NSN5310-01-060-1772
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 68A581612-2003 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: PS13201,TYPE 2,CLASS 1,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6,COND T851 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DRIVE POINT WIDTH: 0.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 2.750 INCHES IN
•
NUT DIAMETER: 3.315 INCHES NOMINAL IN
•
DRIVE POINT DEPTH: 0.060 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONPS13201,TYPE 2,CLASS 1,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,COND T851 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DRIVE POINT WIDTH0.500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE2.750 INCHES IN
NUT DIAMETER3.315 INCHES NOMINAL IN
DRIVE POINT DEPTH0.060 INCHES NOMINAL IN
UNDERCUT THICKNESS0.410 INCHES NOMINAL IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 68A581612-2003?
68A581612-2003 is a NUT,SELF-LOCKING,ROUND.
What is the NSN for 68A581612-2003?
68A581612-2003 is cataloged in the U.S. Government catalog under NSN 5310-01-060-1772. 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.