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ST2780-11 — NUT,PLAIN,EXTENDED WASHER,DOUBLE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

ST2780-11: NUT,PLAIN,EXTENDED WASHER,DOUBLE.

NUT,PLAIN,EXTENDED WASHER,DOUBLE. This part is cataloged in the U.S. Government catalog under NSN 5310-01-450-0704, 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
ST2780-11
NSN: 5310-01-450-0704
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
Part NumberST2780-11
NSN5310-01-450-0704
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: ST2780-11 · 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
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 6
ST2782-11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
92617-524Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST2783-11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST2785-11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VN4761BB054Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5310PL0754416Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST2780-11?
ST2780-11 is a NUT,PLAIN,EXTENDED WASHER,DOUBLE.
What parts can replace ST2780-11?
There are 6 known substitutes for ST2780-11: ST2782-11, 92617-524, ST2783-11 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST2780-11?
ST2780-11 is cataloged in the U.S. Government catalog under NSN 5310-01-450-0704. This indicates validated use in U.S. government and defense supply chains.
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