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Technical Data Sheet
PartsTable / COMPONENT / B-9554
B-9554 ✓ 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,SLOTTED,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SLOTTED, HEXAGON, nut_height: 0.438 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), 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 5310-00-731-5337, 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
B-9554
NSN: 5310-00-731-5337
FSC: 5310
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSLOTTED, HEXAGON
nut_height0.438 INCHES NOMINAL IN
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.750 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
bearing_surface_typeCHAMFERED
bearing_surface_finish125.0 MICROINCHES
thread_quantity_per_inch13
NSN5310-00-731-5337
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B-9554 · 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 CLASS: 3B
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD QUANTITY PER INCH: 13
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
•
NUT HEIGHT: 0.438 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
NOMINAL THREAD SIZE0.500 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPECHAMFERED
THREAD QUANTITY PER INCH13
BEARING SURFACE FINISH125.0 MICROINCHES
NUT HEIGHT0.438 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NUT STYLESLOTTED, HEXAGON
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
980628-4Interchangeable
interchangeable cross-reference
interchangeable
955-4Interchangeable
interchangeable cross-reference
interchangeable
25236-4-4SInterchangeable
interchangeable cross-reference
interchangeable
658536Interchangeable
interchangeable cross-reference
interchangeable
A95-54Interchangeable
interchangeable cross-reference
interchangeable
SCD17000-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-9554?
B-9554 is a NUT,PLAIN,SLOTTED,HEXAGON.
What parts can replace B-9554?
There are 11 known substitutes for B-9554: 980628-4, 955-4, 25236-4-4S and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-9554?
B-9554 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-731-5337. 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