PartsTable
Technical Data Sheet
M32258-UAC12 ✓ 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: NICKEL ALLOY OVERALL EXCEPT INSERT, nut_style: HEXAGON, nut_height: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3A A, thread_series: UNIFIED NATIONAL JOINT (UNJ). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-608-8535, 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
M32258-UAC12
NSN: 5310-01-608-8535
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialNICKEL ALLOY OVERALL EXCEPT INSERT
nut_styleHEXAGON
nut_height0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3A A
thread_seriesUNIFIED NATIONAL JOINT (UNJ)
hardness_rating80.0 ROCKWELL C MINIMUM
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
width_across_flats1.239 INCHES MINIMUM AND 1.257 INCHES MAXIMUM IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeCHAMFERED
NSN5310-01-608-8535
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M32258-UAC12 · 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
HARDNESS RATING: 80.0 ROCKWELL C MINIMUM
NUT HEIGHT: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH: 10
NUT STYLE: HEXAGON
THREAD SERIES: UNIFIED NATIONAL JOINT (UNJ)
NOMINAL THREAD SIZE: 0.750 INCHES IN
THREAD DIRECTION: RIGHT-HAND
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING80.0 ROCKWELL C MINIMUM
NUT HEIGHT0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH10
NUT STYLEHEXAGON
THREAD SERIESUNIFIED NATIONAL JOINT (UNJ)
NOMINAL THREAD SIZE0.750 INCHES IN
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD CLASS3A A
BEARING SURFACE TYPECHAMFERED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
7383858-H5471720-045D4Interchangeable
interchangeable cross-reference
interchangeable
09NU-120MONELD4Interchangeable
interchangeable cross-reference
interchangeable
H547-1720-45Interchangeable
interchangeable cross-reference
interchangeable
2644-857-01-ITEM NO-33L1Interchangeable
interchangeable cross-reference
interchangeable
2644-857-01-ITEM NO-33Interchangeable
interchangeable cross-reference
interchangeable
M32258-UAC12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M32258-UAC12?
M32258-UAC12 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace M32258-UAC12?
There are 6 known substitutes for M32258-UAC12: 7383858-H5471720-045D4, 09NU-120MONELD4, H547-1720-45 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M32258-UAC12?
M32258-UAC12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-608-8535. This indicates validated use in U.S. government and defense supply chains.
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