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509 PC 9 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

509 PC 9: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-451-5436, 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
509 PC 9
NSN: 5310-01-451-5436
FSC: 5310 — Nuts and Washers
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
Part Number509 PC 9
NSN5310-01-451-5436
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 509 PC 9 · 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
SUBSTITUTES & CROSS-REFERENCES 1
3813-LReference document
Same NSN cross-reference
Reference document — Secondary reference
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 509 PC 9?
509 PC 9 is a WASHER,FLAT.
What parts can replace 509 PC 9?
There is 1 known substitute for 509 PC 9: 3813-L. Substitute compatibility should be verified for your specific system.
What is the NSN for 509 PC 9?
509 PC 9 is cataloged in the U.S. Government catalog under NSN 5310-01-451-5436. This indicates validated use in U.S. government and defense supply chains.
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