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74A586450-1001 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

74A586450-1001: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: ALUMINUM ALLOY 2024 WASHER, nut_style: HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.375 INCHES NOMINAL IN, locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-126-5271, 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
74A586450-1001
NSN: 5310-01-126-5271
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 WASHER
nut_styleHEXAGON
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.375 INCHES NOMINAL IN
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
washer_thickness0.100 INCHES NOMINAL IN
width_across_flats0.688 INCHES NOMINAL IN
nominal_thread_size0.438 INCHES IN
washer_outside_diameter1.200 INCHES NOMINAL IN
thread_quantity_per_inch20
NSN5310-01-126-5271
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 74A586450-1001 · 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
•
WASHER OUTSIDE DIAMETER: 1.200 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.688 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
WASHER THICKNESS: 0.100 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6,T851 FED SPEC SINGLE MATERIAL RESPONSE NUT
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.375 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER1.200 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.688 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
WASHER THICKNESS0.100 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T851 FED SPEC SINGLE MATERIAL RESPONSE NUT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T851 FED SPEC SINGLE MATERIAL RESPONSE WASHER
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.438 INCHES 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 74A586450-1001?
74A586450-1001 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What is the NSN for 74A586450-1001?
74A586450-1001 is cataloged in the U.S. Government catalog under NSN 5310-01-126-5271. 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.