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PartsTable / COMPONENT / 25056H
25056H ✓ 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: 0.125 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-5999, 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
25056H
NSN: 5310-00-011-5999
FSC: 5310
CAGE: 89346 — NAVISTAR INTL CORP TRUCK BR OHIO PLANT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.125 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE OVERALL
width_across_flats0.375 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES IN
bearing_surface_typeFLAT
thread_quantity_per_inch32
nondefinitive_spec/std_data2 TYPE AND 1 STYLE AND A GRADE
NSN5310-00-011-5999
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 25056H · 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
•
NUT HEIGHT: 0.125 INCHES NOMINAL IN
•
BEARING SURFACE TYPE: FLAT
•
THREAD SERIES: UNF
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 STYLE AND A GRADE
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.125 INCHES NOMINAL IN
BEARING SURFACE TYPEFLAT
THREAD SERIESUNF
NOMINAL THREAD SIZE0.190 INCHES IN
THREAD QUANTITY PER INCH32
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE AND A GRADE
SURFACE TREATMENTPHOSPHATE OVERALL
THREAD CLASS2B
NUT STYLEHEXAGON
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
103089Interchangeable
interchangeable cross-reference
interchangeable
340543Interchangeable
interchangeable cross-reference
interchangeable
BBKX2DInterchangeable
interchangeable cross-reference
interchangeable
110921Interchangeable
interchangeable cross-reference
interchangeable
FFN836GPCTYPE2STYLE1GRADEAInterchangeable
interchangeable cross-reference
interchangeable
110922Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25056H?
25056H is a NUT,PLAIN,HEXAGON.
What parts can replace 25056H?
There are 20 known substitutes for 25056H: 103089, 340543, BBKX2D and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25056H?
25056H is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-5999. 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