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12420857 — NUT,PLAIN,CAP

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12420857: NUT,PLAIN,CAP.

The NUT,PLAIN,CAP is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: CAP, hole_type_and_quantity: 1 DRILLED, end_item_identification: MRAP - COMMON NSN - USED ON CAIMAN PLUS CAT I AND 1 OTHER WEAPON SYSTEM; HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-421-8339, 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
12420857
NSN: 5310-01-421-8339
FSC: 5310 — Nuts and Washers
CAGE: 076M6 — AMZ ALABAMA INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleCAP
hole_type_and_quantity1 DRILLED
end_item_identificationMRAP - COMMON NSN - USED ON CAIMAN PLUS CAT I AND 1 OTHER WEAPON SYSTEM; HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS)
NSN5310-01-421-8339
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12420857 · 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: CAP
•
MATERIAL: STEEL OVERALL
•
HOLE TYPE AND QUANTITY: 1 DRILLED
TECHNICAL CHARACTERISTICS
NUT STYLECAP
END ITEM IDENTIFICATIONMRAP - COMMON NSN - USED ON CAIMAN PLUS CAT I AND 1 OTHER WEAPON SYSTEM; HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS)
MATERIALSTEEL OVERALL
HOLE TYPE AND QUANTITY1 DRILLED
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
6015Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12420857?
12420857 is a NUT,PLAIN,CAP.
What parts can replace 12420857?
There is 1 known substitute for 12420857: 6015. Substitute compatibility should be verified for your specific system.
What is the NSN for 12420857?
12420857 is cataloged in the U.S. Government catalog under NSN 5310-01-421-8339. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.