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2557540 — NUT,BREECH CAP

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2557540: NUT,BREECH CAP.

The NUT,BREECH CAP is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: CRES AISI431,1.046 IN. LG,0.437-20UNEF-3A THRD A.

This part is cataloged in the U.S. Government catalog under NSN 5310-00-573-6893, 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
2557540
NSN: 5310-00-573-6893
FSC: 5310 — Nuts and Washers
CAGE: 88277 — THE BOEING COMPANY (USA)
SPECIFICATIONS
general_characteristics_item_descriptionCRES AISI431,1.046 IN. LG,0.437-20UNEF-3A THRD A
NSN5310-00-573-6893
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2557540 · 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
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: CRES AISI431,1.046 IN. LG,0.437-20UNEF-3A THRD A
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCRES AISI431,1.046 IN. LG,0.437-20UNEF-3A THRD A
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 1
61A107C100Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2557540?
2557540 is a NUT,BREECH CAP.
What parts can replace 2557540?
There is 1 known substitute for 2557540: 61A107C100. Substitute compatibility should be verified for your specific system.
What is the NSN for 2557540?
2557540 is cataloged in the U.S. Government catalog under NSN 5310-00-573-6893. This indicates validated use in U.S. government and defense supply chains.
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