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11438540 — NUT,SELF-LOCKING,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

11438540: NUT,SELF-LOCKING,ROUND.

The NUT,SELF-LOCKING,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: ROUND, nut_diameter: 2.177 INCHES NOMINAL IN, thread_class: 2A A, nut_thickness: 0.250 INCHES NOMINAL IN, thread_series: UNS. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-214-8410, 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
11438540
NSN: 5310-01-214-8410
FSC: 5310 — Nuts and Washers
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleROUND
nut_diameter2.177 INCHES NOMINAL IN
thread_class2A A
nut_thickness0.250 INCHES NOMINAL IN
thread_seriesUNS
special_featuresITEM HAS TWO HOLES 0.1266-0.1260 IN DEEP;HOLES ARE LOCATED ON OUTER DIAOF THE NUT EQUALLY SPACED APART IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
nominal_thread_size2.250 INCHES IN
drive_point_diameter0.161 INCHES NOMINAL IN
drive_point_quantity8
NSN5310-01-214-8410
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11438540 · 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: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNS
•
MATERIAL DOCUMENT AND CLASSIFICATION: -1L-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 2.250 INCHES IN
•
NUT DIAMETER: 2.177 INCHES NOMINAL IN
•
NUT THICKNESS: 0.250 INCHES NOMINAL IN
•
DRIVE POINT DIAMETER: 0.161 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNS
MATERIAL DOCUMENT AND CLASSIFICATION-1L-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE2.250 INCHES IN
NUT DIAMETER2.177 INCHES NOMINAL IN
NUT THICKNESS0.250 INCHES NOMINAL IN
DRIVE POINT DIAMETER0.161 INCHES NOMINAL IN
DRILLED HOLE DIAMETER0.161 INCHES NOMINAL IN
SPECIAL FEATURESITEM HAS TWO HOLES 0.1266-0.1260 IN DEEP;HOLES ARE LOCATED ON OUTER DIAOF THE NUT EQUALLY SPACED APART IN
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 11438540?
11438540 is a NUT,SELF-LOCKING,ROUND.
What is the NSN for 11438540?
11438540 is cataloged in the U.S. Government catalog under NSN 5310-01-214-8410. This indicates validated use in U.S. government and defense supply chains.
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