PartsTable
Technical Data Sheet
AN340B3 ✓ 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 NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 268 OVERALL, nut_style: HEXAGON, nut_height: 0.062 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-1358, 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
AN340B3
NSN: 5310-00-167-1358
FSC: 5310
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 268 OVERALL
nut_styleHEXAGON
nut_height0.062 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_across_flats0.187 INCHES NOMINAL IN
nominal_thread_size0.099 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch48
material_document_and_classificationQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-167-1358
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN340B3 · 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
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE: 0.099 INCHES IN
THREAD QUANTITY PER INCH: 48
NUT STYLE: HEXAGON
MATERIAL: COPPER ALLOY OVERALL
THREAD DIRECTION: RIGHT-HAND
NUT HEIGHT: 0.057 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.099 INCHES IN
THREAD QUANTITY PER INCH48
NUT STYLEHEXAGON
MATERIALCOPPER ALLOY OVERALL
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.057 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.180 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
8031Interchangeable
interchangeable cross-reference
interchangeable
100B6BC3Interchangeable
interchangeable cross-reference
interchangeable
AN340B3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN340B3?
AN340B3 is a NUT,PLAIN,HEXAGON.
What parts can replace AN340B3?
There are 3 known substitutes for AN340B3: 8031, 100B6BC3, AN340B3. Substitute compatibility should be verified for your specific system.
What is the NSN for AN340B3?
AN340B3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-1358. This indicates validated use in U.S. government and defense supply chains.
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