PartsTable
Technical Data Sheet
12387305-2 ✓ 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: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-761-6882, 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
12387305-2
NSN: 5310-00-761-6882
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OVERALL
width_across_flats0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch20
surface_treatment_document_and_classificationASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-761-6882
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12387305-2 · 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 STYLE: HEXAGON
NUT HEIGHT: 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
NOMINAL THREAD SIZE: 0.250 INCHES IN
HARDNESS RATING: 121.0 BRINELL STANDARD MINIMUM
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH: 20
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 4 STYLE
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
NUT HEIGHT0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.250 INCHES IN
HARDNESS RATING121.0 BRINELL STANDARD MINIMUM
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 4 STYLE
SURFACE TREATMENTZINC OVERALL
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
3M348L3Interchangeable
interchangeable cross-reference
interchangeable
53488W-1032Interchangeable
interchangeable cross-reference
interchangeable
K19701P3Interchangeable
interchangeable cross-reference
interchangeable
2WC273Interchangeable
interchangeable cross-reference
interchangeable
71508Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS9141Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12387305-2?
12387305-2 is a NUT,PLAIN,HEXAGON.
What parts can replace 12387305-2?
There are 32 known substitutes for 12387305-2: 3M348L3, 53488W-1032, K19701P3 and 29 more. Substitute compatibility should be verified for your specific system.
Is 12387305-2 still available?
12387305-2 is currently cancelled.
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