PartsTable
Technical Data Sheet
G90231-2 ✓ 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 PACKING NUT is a the manufacturer industrial component. Key specifications include special_features: LEVEL I REQUIREMENTS DO NOT APPLY, style_designator: HEXAGON, EXTERNAL THREAD, BOSS, thread_direction: RIGHT-HAND, screw_thread_location: EXTERNAL, casehardening_indicator: NOT CASEHARDENED, end_item_identification: LOS ANGELES CLASS SSN (688). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-170-4122, 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
G90231-2
NSN: 5310-01-170-4122
FSC: 5310
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
special_featuresLEVEL I REQUIREMENTS DO NOT APPLY
style_designatorHEXAGON, EXTERNAL THREAD, BOSS
thread_directionRIGHT-HAND
screw_thread_locationEXTERNAL
casehardening_indicatorNOT CASEHARDENED
end_item_identificationLOS ANGELES CLASS SSN (688)
smallest_inside_diameter0.188 INCHES NOMINAL IN
screw_thread_series_designatorNPT
NSN5310-01-170-4122
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: G90231-2 · 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONLOS ANGELES CLASS SSN (688)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
G90231-2Interchangeable
interchangeable cross-reference
interchangeable
10218Interchangeable
interchangeable cross-reference
interchangeable
10218-1 PIECE 23Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G90231-2?
G90231-2 is a PACKING NUT.
What parts can replace G90231-2?
There are 3 known substitutes for G90231-2: G90231-2, 10218, 10218-1 PIECE 23. Substitute compatibility should be verified for your specific system.
What is the NSN for G90231-2?
G90231-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-170-4122. This indicates validated use in U.S. government and defense supply chains.
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