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Technical Data Sheet
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644-405AP — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

644-405AP: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-292-5315, 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
644-405AP
NSN: 5310-01-292-5315
FSC: 5310 — Nuts and Washers
CAGE: 1T943 — ACME PRODUCTS & ENGINEERING INC (USA)
SPECIFICATIONS
Part Number644-405AP
NSN5310-01-292-5315
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 644-405AP · 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 2
644-405Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
60-902 PC 405Reference 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 644-405AP?
644-405AP is a NUT,PLAIN,ROUND.
What parts can replace 644-405AP?
There are 2 known substitutes for 644-405AP: 644-405, 60-902 PC 405. Substitute compatibility should be verified for your specific system.
What is the NSN for 644-405AP?
644-405AP is cataloged in the U.S. Government catalog under NSN 5310-01-292-5315. This indicates validated use in U.S. government and defense supply chains.
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