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218488 ✓ 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

ARM,CONTROL,VEHICULAR SUSPENSION. Key specifications include vehicle_design_control_activity: 10237, part_name_assigned_by_controlling_agency: LOWER LEFT WISHBONE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8488, 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
218488
NSN: 5310-00-021-8488
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
end_item_identificationDIRECT VENDOR DELIVERY(DVD),MODEL XM1117,ARMORED SECURITY VEHICLE(ASV), NSN 2320-01-437-6957,CAGE 10237,PART NUMBER 216098,TM9-2320-307-24P,CONTRACT DAAE07-99-C-S001.
vehicle_design_control_activity10237
part_name_assigned_by_controlling_agencyLOWER LEFT WISHBONE
NSN5310-00-021-8488
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 218488 · 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
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
THREAD QUANTITY PER INCH: 11
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
WIDTH ACROSS FLATS: 1.0310 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.625 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD QUANTITY PER INCH11
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS1.0310 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS2B
NUT STYLESLOTTED, HEXAGON
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
7695GXInterchangeable
interchangeable cross-reference
interchangeable
MS51504A16Interchangeable
interchangeable cross-reference
interchangeable
456118Interchangeable
interchangeable cross-reference
interchangeable
A14401123Interchangeable
interchangeable cross-reference
interchangeable
218488Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 218488?
218488 is a ARM,CONTROL,VEHICULAR SUSPENSION.
What parts can replace 218488?
There are 5 known substitutes for 218488: 7695GX, MS51504A16, 456118 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 218488?
218488 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8488. 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