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Technical Data Sheet
PartsTable / COMPONENT / 876912-00
876912-00 ✓ 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,SELF-LOCKING,DOUBLE HEXAGON. Key specifications include material: STEEL OVERALL, nut_style: DOUBLE HEXAGON, nut_height: 0.328 INCHES NOMINAL IN, temp_rating: 550.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-818-9542, 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
876912-00
NSN: 5310-00-818-9542
FSC: 5310
CAGE: 32345 — DEFENSE REDUCTION AGENCY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleDOUBLE HEXAGON
nut_height0.328 INCHES NOMINAL IN
temp_rating550.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.306 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
thread_quantity_per_inch28
NSN5310-00-818-9542
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 876912-00 · 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
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
NUT STYLE: DOUBLE HEXAGON
•
TEMP RATING: 550.0 FAHRENHEIT NOMINAL DEGF
•
THREAD QUANTITY PER INCH: 28
•
THREAD SERIES: UNF
•
NUT HEIGHT: 0.328 INCHES NOMINAL IN
•
THREAD CLASS: 3B
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
NUT STYLEDOUBLE HEXAGON
TEMP RATING550.0 FAHRENHEIT NOMINAL DEGF
THREAD QUANTITY PER INCH28
THREAD SERIESUNF
NUT HEIGHT0.328 INCHES NOMINAL IN
THREAD CLASS3B
NOMINAL THREAD SIZE0.250 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
PWA23391Interchangeable
interchangeable cross-reference
interchangeable
H224Interchangeable
interchangeable cross-reference
interchangeable
LK131Interchangeable
interchangeable cross-reference
interchangeable
3B1143Interchangeable
interchangeable cross-reference
interchangeable
9586H224Interchangeable
interchangeable cross-reference
interchangeable
221464PC107Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 876912-00?
876912-00 is a NUT,SELF-LOCKING,DOUBLE HEXAGON.
What parts can replace 876912-00?
There are 6 known substitutes for 876912-00: PWA23391, H224, LK131 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 876912-00?
876912-00 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-818-9542. 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