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PT891030 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

PT891030: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-623-1778, 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
PT891030
NSN: 5310-01-623-1778
FSC: 5310 — Nuts and Washers
CAGE: 1P230 — SPECIALTY WASHER CO OF SOUTH CAROLINA INC (USA)
SPECIFICATIONS
Part NumberPT891030
NSN5310-01-623-1778
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PT891030 · 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
7647281Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PT891030?
PT891030 is a WASHER,FLAT.
What parts can replace PT891030?
There is 1 known substitute for PT891030: 7647281. Substitute compatibility should be verified for your specific system.
What is the NSN for PT891030?
PT891030 is cataloged in the U.S. Government catalog under NSN 5310-01-623-1778. This indicates validated use in U.S. government and defense supply chains.
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