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PartsTable / COMPONENT / 10122091
10122091 ✓ 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,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: ROUND, nut_diameter: 0.427 INCHES MINIMUM AND 0.433 INCHES MAXIMUM IN, thread_class: 2B, nut_thickness: 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN, thread_series: UNS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-078-1724, 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
10122091
NSN: 5310-01-078-1724
FSC: 5310
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleROUND
nut_diameter0.427 INCHES MINIMUM AND 0.433 INCHES MAXIMUM IN
thread_class2B
nut_thickness0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
thread_seriesUNS
thread_directionRIGHT-HAND
drive_point_depth0.040 INCHES NOMINAL IN
drive_point_width0.062 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.312 INCHES IN
drive_point_quantity2
NSN5310-01-078-1724
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10122091 · 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 SERIES: UNS
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
THREAD QUANTITY PER INCH: 40
•
MATERIAL: STEEL COMP 303 OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DRIVE POINT WIDTH: 0.062 INCHES NOMINAL IN
•
NUT STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNS
NOMINAL THREAD SIZE0.312 INCHES IN
THREAD QUANTITY PER INCH40
MATERIALSTEEL COMP 303 OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DRIVE POINT WIDTH0.062 INCHES NOMINAL IN
NUT STYLEROUND
NUT DIAMETER0.427 INCHES MINIMUM AND 0.433 INCHES MAXIMUM IN
DRIVE POINT DEPTH0.040 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
EE64105Interchangeable
interchangeable cross-reference
interchangeable
5310008381702Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10122091?
10122091 is a NUT,PLAIN,ROUND.
What parts can replace 10122091?
There are 2 known substitutes for 10122091: EE64105, 5310008381702. Substitute compatibility should be verified for your specific system.
What is the NSN for 10122091?
10122091 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-078-1724. 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