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Technical Data Sheet
122-7270389PC 34 ✓ 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,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: PLASTIC NYLON LOCKING INSERT, nut_style: HEXAGON, nut_height: 0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-050-6646, 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
122-7270389PC 34
NSN: 5310-00-050-6646
FSC: 5310
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC NYLON LOCKING INSERT
nut_styleHEXAGON
nut_height0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
special_featuresW/NYLON INSERT
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL EXCEPT INSERT
width_across_flats0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
NSN5310-00-050-6646
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 122-7270389PC 34 · 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: STEEL COMP 303 NUT
WIDTH ACROSS FLATS: 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
NOMINAL THREAD SIZE: 0.375 INCHES IN
THREAD QUANTITY PER INCH: 16
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 303 NUT
SPECIAL FEATURESW/NYLON INSERT
WIDTH ACROSS FLATS0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
NOMINAL THREAD SIZE0.375 INCHES IN
THREAD QUANTITY PER INCH16
BEARING SURFACE TYPEFLAT
MATERIALPLASTIC NYLON LOCKING INSERT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
12Z2007-344Interchangeable
interchangeable cross-reference
interchangeable
845-2050999 PIECE 9Interchangeable
interchangeable cross-reference
interchangeable
2640-613Interchangeable
interchangeable cross-reference
interchangeable
845-2050999Interchangeable
interchangeable cross-reference
interchangeable
2640-612Interchangeable
interchangeable cross-reference
interchangeable
845-2050997Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 122-7270389PC 34?
122-7270389PC 34 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 122-7270389PC 34?
There are 26 known substitutes for 122-7270389PC 34: 12Z2007-344, 845-2050999 PIECE 9, 2640-613 and 23 more. Substitute compatibility should be verified for your specific system.
Is 122-7270389PC 34 still available?
122-7270389PC 34 is currently cancelled.
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