PartsTable
Technical Data Sheet
AN340B4 ✓ 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 462 OR COPPER ALLOY 464 OR COPPER ALLOY 360 OVERALL, nut_style: HEXAGON, nut_height: 0.087 INCHES MINIMUM AND 0.098 INCHES MAXIMUM 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 5310-00-167-1360, 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
AN340B4
NSN: 5310-00-167-1360
FSC: 5310
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 360 OVERALL
nut_styleHEXAGON
nut_height0.087 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
width_across_flats0.241 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
nominal_thread_size0.112 INCHES IN
bearing_surface_typeCHAMFERED
end_item_identificationA4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
thread_quantity_per_inch40
NSN5310-00-167-1360
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN340B4 · 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
NOMINAL THREAD SIZE: 0.112 INCHES IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH: 40
THREAD CLASS: 2B
MATERIAL: COPPER ALLOY OVERALL
NUT HEIGHT: 0.098 INCHES NOMINAL IN
WIDTH ACROSS FLATS: 0.241 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE0.112 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH40
THREAD CLASS2B
MATERIALCOPPER ALLOY OVERALL
NUT HEIGHT0.098 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.241 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 13 STYLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
10121848Interchangeable
interchangeable cross-reference
interchangeable
N04BInterchangeable
interchangeable cross-reference
interchangeable
JHP42-124Interchangeable
interchangeable cross-reference
interchangeable
128608-002Interchangeable
Same NIIN cross-reference
interchangeable
FFN836Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN340B4?
AN340B4 is a NUT,PLAIN,HEXAGON.
What parts can replace AN340B4?
There are 5 known substitutes for AN340B4: 10121848, N04B, JHP42-124 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN340B4?
AN340B4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-1360. This indicates validated use in U.S. government and defense supply chains.
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