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11438039-20 — NUT,BLIND ASSEMBLY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

11438039-20: NUT,BLIND ASSEMBLY.

The NUT,BLIND ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OR STEEL COMP 305 OVERALL, nut_diameter: 0.216 INCHES MINIMUM AND 0.216 INCHES MINIMUM AND 0.218 INCHES MAXIMUM0.218 INCHES MAXIMUM IN, thread_class: 3B3B, thread_series: UNJCUNJC, thread_direction: RIGHT-HANDRIGHT-HAND, surface_treatment: PASSIVATE BOSS. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-446-9832, 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
11438039-20
NSN: 5310-01-446-9832
FSC: 5310 — Nuts and Washers
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OR STEEL COMP 305 OVERALL
nut_diameter0.216 INCHES MINIMUM AND 0.216 INCHES MINIMUM AND 0.218 INCHES MAXIMUM0.218 INCHES MAXIMUM IN
thread_class3B3B
thread_seriesUNJCUNJC
thread_directionRIGHT-HANDRIGHT-HAND
surface_treatmentPASSIVATE BOSS
nominal_thread_size0.138 INCHES0.138 INCHES IN
thread_quantity_per_inch3232
NSN5310-01-446-9832
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11438039-20 · 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
•
THREAD SERIES: UNJCUNJC
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
•
NOMINAL THREAD SIZE: 0.138 INCHES0.138 INCHES IN
•
NUT DIAMETER: 0.216 INCHES MINIMUM AND 0.216 INCHES MINIMUM AND 0.218 INCHES MAXIMUM0.218 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE BOSS
•
THREAD CLASS: 3B3B
•
THREAD QUANTITY PER INCH: 3232
•
MATERIAL: STEEL COMP 304 OR STEEL COMP 305 OVERALL
TECHNICAL CHARACTERISTICS
THREAD SERIESUNJCUNJC
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
NOMINAL THREAD SIZE0.138 INCHES0.138 INCHES IN
NUT DIAMETER0.216 INCHES MINIMUM AND 0.216 INCHES MINIMUM AND 0.218 INCHES MAXIMUM0.218 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE BOSS
THREAD CLASS3B3B
THREAD QUANTITY PER INCH3232
MATERIALSTEEL COMP 304 OR STEEL COMP 305 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 1
BN360-632TF3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 11438039-20?
11438039-20 is a NUT,BLIND ASSEMBLY.
What parts can replace 11438039-20?
There is 1 known substitute for 11438039-20: BN360-632TF3. Substitute compatibility should be verified for your specific system.
What is the NSN for 11438039-20?
11438039-20 is cataloged in the U.S. Government catalog under NSN 5310-01-446-9832. 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.