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31A4X12(4204) — NUT,PLAIN,CASTELLATED,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

31A4X12(4204): NUT,PLAIN,CASTELLATED,HEXAGON.

The NUT,PLAIN,CASTELLATED,HEXAGON is a the manufacturer industrial component. Key specifications include end_item_identification: AUX SEA WATER PUMP, part_name_assigned_by_controlling_agency: NUT,HEX, CASTLE. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-596-4989, 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
31A4X12(4204)
NSN: 5310-01-596-4989
FSC: 5310 — Nuts and Washers
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
end_item_identificationAUX SEA WATER PUMP
part_name_assigned_by_controlling_agencyNUT,HEX, CASTLE
NSN5310-01-596-4989
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 31A4X12(4204) · 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
PART NAME ASSIGNED BY CONTROLLING AGENCYNUT,HEX, CASTLE
END ITEM IDENTIFICATIONAUX SEA WATER PUMP
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
PL-16034N18 ITEM 255Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 31A4X12(4204)?
31A4X12(4204) is a NUT,PLAIN,CASTELLATED,HEXAGON.
What parts can replace 31A4X12(4204)?
There is 1 known substitute for 31A4X12(4204): PL-16034N18 ITEM 255. Substitute compatibility should be verified for your specific system.
What is the NSN for 31A4X12(4204)?
31A4X12(4204) is cataloged in the U.S. Government catalog under NSN 5310-01-596-4989. This indicates validated use in U.S. government and defense supply chains.
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