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Technical Data Sheet
PartsTable / COMPONENT / 25524R1
25524R1 ✓ 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 thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND, nominal_thread_size: 0.438 INCHES IN, end_item_identification: MRAP MAXXPRO, thread_quantity_per_inch: 14, part_name_assigned_by_controlling_agency: NUT, HEX 7/16-14. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-346-9364, 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
25524R1
NSN: 5310-01-346-9364
FSC: 5310
CAGE: 89346 — NAVISTAR INTL CORP TRUCK BR OHIO PLANT (USA)
SPECIFICATIONS
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
nominal_thread_size0.438 INCHES IN
end_item_identificationMRAP MAXXPRO
thread_quantity_per_inch14
part_name_assigned_by_controlling_agencyNUT, HEX 7/16-14
NSN5310-01-346-9364
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 25524R1 · 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
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
THREAD QUANTITY PER INCH: 14
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYNUT, HEX 7/16-14
NOMINAL THREAD SIZE0.438 INCHES IN
THREAD QUANTITY PER INCH14
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
END ITEM IDENTIFICATIONMRAP MAXXPRO
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
25525R1Interchangeable
interchangeable cross-reference
interchangeable
ESP-E-1.101-GSInterchangeable
interchangeable cross-reference
interchangeable
ESP-E-1.221-NPPInterchangeable
interchangeable cross-reference
interchangeable
25 529 R1Interchangeable
interchangeable cross-reference
interchangeable
ESP-E-1.121-PPInterchangeable
interchangeable cross-reference
interchangeable
25522R1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25524R1?
25524R1 is a NUT,PLAIN,HEXAGON.
What parts can replace 25524R1?
There are 19 known substitutes for 25524R1: 25525R1, ESP-E-1.101-GS, ESP-E-1.221-NPP and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25524R1?
25524R1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-346-9364. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026