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Technical Data Sheet
124818 ✓ 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 LOCKNUT,TUBE FITTING is a the manufacturer industrial component. Key specifications include end_item_identification: MRAP - COMMON NSN - USED ON MAXXPRO CAT I AND 1 OTHER WEAPON SYSTEM, part_name_assigned_by_controlling_agency: NUT, 1/4 JAM TYPE 5. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-012-4818, 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
124818
NSN: 5310-00-012-4818
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
end_item_identificationMRAP - COMMON NSN - USED ON MAXXPRO CAT I AND 1 OTHER WEAPON SYSTEM
part_name_assigned_by_controlling_agencyNUT, 1/4 JAM TYPE 5
NSN5310-00-012-4818
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 124818 · 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
NUT STYLE: HEXAGON
THREAD QUANTITY PER INCH: 20
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE: 0.250 INCHES IN
NONDEFINITIVE SPEC/STD DATA: A TYPE
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY OVER-ALL HEIGHT
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
THREAD QUANTITY PER INCH20
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.250 INCHES IN
NONDEFINITIVE SPEC/STD DATAA TYPE
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY OVER-ALL HEIGHT
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
NUT HEIGHT0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
110985Interchangeable
interchangeable cross-reference
interchangeable
26451SInterchangeable
interchangeable cross-reference
interchangeable
80012Interchangeable
interchangeable cross-reference
interchangeable
9680Interchangeable
interchangeable cross-reference
interchangeable
29680-29622DX1S2Interchangeable
interchangeable cross-reference
interchangeable
225033Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 124818?
124818 is a LOCKNUT,TUBE FITTING.
What parts can replace 124818?
There are 20 known substitutes for 124818: 110985, 26451S, 80012 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 124818?
124818 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-012-4818. This indicates validated use in U.S. government and defense supply chains.
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