PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 25525R1
25525R1 ✓ 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: 0.377 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-843-3816, 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
25525R1
NSN: 5310-00-843-3816
FSC: 5310
CAGE: 89346 — NAVISTAR INTL CORP TRUCK BR OHIO PLANT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.377 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats0.682 INCHES NOMINAL IN
nominal_thread_size0.438 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
end_item_identificationMRAP MAXXPRO
thread_quantity_per_inch20
part_name_assigned_by_controlling_agencyNUT,HEX 7/16-20 TYPE 8
NSN5310-00-843-3816
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 25525R1 · 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 QUANTITY PER INCH: 20
•
THREAD SERIES: UNF
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
WIDTH ACROSS FLATS: 0.682 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONMRAP MAXXPRO
THREAD QUANTITY PER INCH20
THREAD SERIESUNF
PART NAME ASSIGNED BY CONTROLLING AGENCYNUT,HEX 7/16-20 TYPE 8
NOMINAL THREAD SIZE0.438 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
WIDTH ACROSS FLATS0.682 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
THREAD CLASS2B
NUT HEIGHT0.377 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
ESP-E-1.101-GSInterchangeable
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
25526R1Interchangeable
interchangeable cross-reference
interchangeable
25520R1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 25525R1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 25525R1?
25525R1 is a NUT,PLAIN,HEXAGON.
What parts can replace 25525R1?
There are 19 known substitutes for 25525R1: ESP-E-1.101-GS, 25 529 R1, ESP-E-1.121-PP and 16 more. Substitute compatibility should be verified for your specific system.
Is 25525R1 still available?
25525R1 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 25525R1

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026