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PartsTable / COMPONENT / 83 155 H
83 155 H ✓ 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

NUT,PLAIN,SINGLE BALL SEAT,HEXAG. Key specifications include material: STEEL OVERALL, nut_style: SINGLE BALL SEAT, HEXAGON, nut_height: 0.885 INCHES NOMINAL IN, thread_class: 3B, thread_series: UN, ball_seat_radius: 0.679 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-007-9912, 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
83 155 H
NSN: 5310-00-007-9912
FSC: 5310
CAGE: 89346 — NAVISTAR INTL CORP TRUCK BR OHIO PLANT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSINGLE BALL SEAT, HEXAGON
nut_height0.885 INCHES NOMINAL IN
thread_class3B
thread_seriesUN
ball_seat_radius0.679 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats1.490 INCHES NOMINAL IN
nominal_thread_size1.125 INCHES IN
thread_quantity_per_inch16
NSN5310-00-007-9912
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 83 155 H · 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 DIRECTION: RIGHT-HAND
•
NUT HEIGHT: 0.885 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 1.125 INCHES IN
•
THREAD SERIES: UN
•
THREAD QUANTITY PER INCH: 16
•
THREAD CLASS: 3B
•
MATERIAL: STEEL OVERALL
•
BALL SEAT RADIUS: 0.679 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.885 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.125 INCHES IN
THREAD SERIESUN
THREAD QUANTITY PER INCH16
THREAD CLASS3B
MATERIALSTEEL OVERALL
BALL SEAT RADIUS0.679 INCHES NOMINAL IN
WIDTH ACROSS FLATS1.490 INCHES NOMINAL IN
NUT STYLESINGLE BALL SEAT, HEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
8989Interchangeable
interchangeable cross-reference
interchangeable
W-984-RInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 83 155 H?
83 155 H is a NUT,PLAIN,SINGLE BALL SEAT,HEXAG.
What parts can replace 83 155 H?
There are 2 known substitutes for 83 155 H: 8989, W-984-R. Substitute compatibility should be verified for your specific system.
What is the NSN for 83 155 H?
83 155 H is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-007-9912. 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