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3D0326-18 — NUT,SELF-LOCKING,BARREL

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3D0326-18: NUT,SELF-LOCKING,BARREL.

The NUT,SELF-LOCKING,BARREL is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 SHELL, nut_style: FLOATING SELF-LOCKING BARREL, nut_height: 1.562 INCHES MAXIMUM IN, nut_length: 2.553 INCHES MINIMUM AND 2.573 INCHES MAXIMUM IN, nut_diameter: 1.869 INCHES MINIMUM AND 1.872 INCHES MAXIMUM IN, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-504-3943, 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
3D0326-18
NSN: 5310-01-504-3943
FSC: 5310 — Nuts and Washers
CAGE: 88277 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 SHELL
nut_styleFLOATING SELF-LOCKING BARREL
nut_height1.562 INCHES MAXIMUM IN
nut_length2.553 INCHES MINIMUM AND 2.573 INCHES MAXIMUM IN
nut_diameter1.869 INCHES MINIMUM AND 1.872 INCHES MAXIMUM IN
thread_class3B
barrel_height1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
hardness_rating50.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
special_featuresROLLPIN-CORROSION RESISTANT STEEL PER AISI 420 OR AISI 302, FINNISH PASSIVATE PER QQ-P-35
thread_directionRIGHT-HAND
NSN5310-01-504-3943
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3D0326-18 · 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
•
NUT LENGTH: 2.553 INCHES MINIMUM AND 2.573 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
HARDNESS RATING: 50.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5662 ASSN STD SINGLE MATERIAL RESPONSE NUT
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
NUT LENGTH2.553 INCHES MINIMUM AND 2.573 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS2411 ASSN STD SINGLE TREATMENT RESPONSE NUT
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
HARDNESS RATING50.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5662 ASSN STD SINGLE MATERIAL RESPONSE NUT
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5662 ASSN STD SINGLE MATERIAL RESPONSE SHELL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.125 INCHES IN
NUT DIAMETER1.869 INCHES MINIMUM AND 1.872 INCHES MAXIMUM 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3D0326-18?
3D0326-18 is a NUT,SELF-LOCKING,BARREL.
What is the NSN for 3D0326-18?
3D0326-18 is cataloged in the U.S. Government catalog under NSN 5310-01-504-3943. 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.