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12284569 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12284569: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, hardness_rating: 88.0 ROCKWELL C NOMINAL, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-197-8276, 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
12284569
NSN: 5310-01-197-8276
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
hardness_rating88.0 ROCKWELL C NOMINAL
thread_directionRIGHT-HAND
washer_thickness0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
width_across_flats0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
nominal_thread_size0.438 INCHES IN
washer_outside_diameter0.172 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
NSN5310-01-197-8276
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12284569 · 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: 0.172 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
HARDNESS RATING: 88.0 ROCKWELL C NOMINAL
•
WASHER THICKNESS: 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.172 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
HARDNESS RATING88.0 ROCKWELL C NOMINAL
WASHER THICKNESS0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.438 INCHES IN
NUT STYLEHEXAGON
MATERIALSTEEL OVERALL
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 12284569?
12284569 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What is the NSN for 12284569?
12284569 is cataloged in the U.S. Government catalog under NSN 5310-01-197-8276. 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.