PartsTable
Technical Data Sheet
122-2420529 PIECE 99 ✓ 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: 0.320 INCHES MINIMUM AND 0.337 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 5310-00-251-0088, 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
122-2420529 PIECE 99
NSN: 5310-00-251-0088
FSC: 5310
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch16
material_document_and_classificationSAE,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-251-0088
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 122-2420529 PIECE 99 · 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
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPE: CHAMFERED
NOMINAL THREAD SIZE: 0.375 INCHES IN
THREAD QUANTITY PER INCH: 16
MATERIAL DOCUMENT AND CLASSIFICATION: SAE,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: STEEL OVERALL
NUT STYLE: HEXAGON
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPECHAMFERED
NOMINAL THREAD SIZE0.375 INCHES IN
THREAD QUANTITY PER INCH16
MATERIAL DOCUMENT AND CLASSIFICATIONSAE,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NUT STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
1377AInterchangeable
interchangeable cross-reference
interchangeable
45-1377AST1SA1-14Interchangeable
interchangeable cross-reference
interchangeable
45-1377AS02BXT1SA0-100Interchangeable
interchangeable cross-reference
interchangeable
1377A0-100PSIGInterchangeable
interchangeable cross-reference
interchangeable
1403Interchangeable
interchangeable cross-reference
interchangeable
45-1082AS-XEY-02B-200Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 122-2420529 PIECE 99?
122-2420529 PIECE 99 is a NUT,PLAIN,HEXAGON.
What parts can replace 122-2420529 PIECE 99?
There are 30 known substitutes for 122-2420529 PIECE 99: 1377A, 45-1377AST1SA1-14, 45-1377AS02BXT1SA0-100 and 27 more. Substitute compatibility should be verified for your specific system.
Is 122-2420529 PIECE 99 still available?
122-2420529 PIECE 99 is currently cancelled.
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