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Technical Data Sheet
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638-19 — WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

638-19: WASHER.

The WASHER is a the manufacturer industrial component. Key specifications include end_item_identification: COMMON AIRCRAFT ELECTRICAL POWER SUPPLY COMPONENTS. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-441-8558, 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
638-19
NSN: 5310-00-441-8558
FSC: 5310 — Nuts and Washers
CAGE: 31435 — LUCAS AEROSPACE POWER EQUIPMENT CORPORATION (USA)
SPECIFICATIONS
end_item_identificationCOMMON AIRCRAFT ELECTRICAL POWER SUPPLY COMPONENTS
NSN5310-00-441-8558
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 638-19 · 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 IDENTIFICATIONCOMMON AIRCRAFT ELECTRICAL POWER SUPPLY COMPONENTS
SUBSTITUTES & CROSS-REFERENCES 1
633-19Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 638-19?
638-19 is a WASHER.
What parts can replace 638-19?
There is 1 known substitute for 638-19: 633-19. Substitute compatibility should be verified for your specific system.
What is the NSN for 638-19?
638-19 is cataloged in the U.S. Government catalog under NSN 5310-00-441-8558. This indicates validated use in U.S. government and defense supply chains.
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