PartsTable
Technical Data Sheet
91831A006 ✓ 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,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, nut_height: 0.141 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-045-8839, 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
91831A006
NSN: 5310-00-045-8839
FSC: 5310
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
nut_height0.141 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.250 INCHES NOMINAL IN
nominal_thread_size0.125 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch40
NSN5310-00-045-8839
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91831A006 · 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
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
BEARING SURFACE TYPE: CHAMFERED
NOMINAL THREAD SIZE: 0.125 INCHES IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH: 40
NUT HEIGHT: 0.141 INCHES NOMINAL IN
THREAD DIRECTION: RIGHT-HAND
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
BEARING SURFACE TYPECHAMFERED
NOMINAL THREAD SIZE0.125 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH40
NUT HEIGHT0.141 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2B
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
50163Interchangeable
interchangeable cross-reference
interchangeable
A2210214Interchangeable
interchangeable cross-reference
interchangeable
50163KInterchangeable
interchangeable cross-reference
interchangeable
SMA571664-1Interchangeable
interchangeable cross-reference
interchangeable
72478Interchangeable
interchangeable cross-reference
interchangeable
CCB-36450Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91831A006?
91831A006 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 91831A006?
There are 14 known substitutes for 91831A006: 50163, A2210214, 50163K and 11 more. Substitute compatibility should be verified for your specific system.
Is 91831A006 still available?
91831A006 is currently cancelled.
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