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Technical Data Sheet
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WW381S16 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

WW381S16: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-303-1587, 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
WW381S16
NSN: 5310-01-303-1587
FSC: 5310 — Nuts and Washers
CAGE: 73287 — HUBBARD M D SPRING CO INC (USA)
SPECIFICATIONS
Part NumberWW381S16
NSN5310-01-303-1587
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: WW381S16 · 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
MR-30Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 WW381S16?
WW381S16 is a WASHER,SPRING TENSION.
What parts can replace WW381S16?
There is 1 known substitute for WW381S16: MR-30. Substitute compatibility should be verified for your specific system.
What is the NSN for WW381S16?
WW381S16 is cataloged in the U.S. Government catalog under NSN 5310-01-303-1587. This indicates validated use in U.S. government and defense supply chains.
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