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Technical Data Sheet
PartsTable / COMPONENT / 0.43814UNC2BT1G 400NSA/BEA
0.43814UNC2BT1G 400NSA/BEA ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The 0.43814UNC2BT1G 400NSA/BEA is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-676-8265, 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
0.43814UNC2BT1G 400NSA/BEA
NSN: 5310-00-676-8265
FSC: 5310
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
Part Number0.43814UNC2BT1G 400NSA/BEA
NSN5310-00-676-8265
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 0.43814UNC2BT1G 400NSA/BEA · 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
•
MATERIAL: NICKEL ALLOY 400 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NUT STYLE: HEXAGON
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
THREAD QUANTITY PER INCH: 14
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALNICKEL ALLOY 400 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NUT STYLEHEXAGON
BEARING SURFACE FINISH125.0 MICROINCHES
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD QUANTITY PER INCH14
NOMINAL THREAD SIZE0.438 INCHES IN
WIDTH ACROSS FLATS0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
453XInterchangeable
interchangeable cross-reference
interchangeable
550426Interchangeable
interchangeable cross-reference
interchangeable
72024Interchangeable
interchangeable cross-reference
interchangeable
NAS1352-04-10Interchangeable
interchangeable cross-reference
interchangeable
092106-000Interchangeable
interchangeable cross-reference
interchangeable
755002A7654-35Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0.43814UNC2BT1G 400NSA/BEA?
0.43814UNC2BT1G 400NSA/BEA is a 0.43814UNC2BT1G 400NSA/BEA.
What parts can replace 0.43814UNC2BT1G 400NSA/BEA?
There are 9 known substitutes for 0.43814UNC2BT1G 400NSA/BEA: 453X, 550426, 72024 and 6 more. Substitute compatibility should be verified for your specific system.
Is 0.43814UNC2BT1G 400NSA/BEA still available?
0.43814UNC2BT1G 400NSA/BEA is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026