PartsTable / COMPONENT / 9KK121
9KK121 — Technical Data Sheet
✓ 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 WASHER,FLAT 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; MRAP - COUGAR. This part is cataloged in the Federal Logistics Information System under NSN 5310-01-556-6649, 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
9KK121
NSN: 5310-01-556-6649 FSC: 5310 CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
end_item_identification MRAP - COMMON NSN - USED ON MAXXPRO CAT I AND 1 OTHER WEAPON SYSTEM; MRAP - COUGAR NSN 5310-01-556-6649
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED
Hex NUT
CROSS-SECTION
WASHER OD: —
SIZE: —
MATERIAL: —
PN: 9KK121 · 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
END ITEM IDENTIFICATION MRAP - COMMON NSN - USED ON MAXXPRO CAT I AND 1 OTHER WEAPON SYSTEM; MRAP - COUGAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
11118M1 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
00044 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
5618 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
BJJ Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
BJY Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
266-0175-120 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
LIFECYCLE
Status CANCELLED GOVERNMENT REGISTRY
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9KK121?
9KK121 is a WASHER,FLAT.
What parts can replace 9KK121?
There are 12 known substitutes for 9KK121: 11118M1, 00044, 5618 and 9 more. Substitute compatibility should be verified for your specific system.
Is 9KK121 still available?
9KK121 is currently cancelled.