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PartsTable / COMPONENT / TYPEAGRADE1CLASSB
TYPEAGRADE1CLASSB ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-595-6761, 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
TYPEAGRADE1CLASSB
NSN: 5310-00-595-6761
FSC: 5310
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberTYPEAGRADE1CLASSB
NSN5310-00-595-6761
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: TYPEAGRADE1CLASSB · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
G302439-3Interchangeable
interchangeable cross-reference
interchangeable
22NM256Interchangeable
interchangeable cross-reference
interchangeable
24NM26Interchangeable
interchangeable cross-reference
interchangeable
333-0326-00Interchangeable
interchangeable cross-reference
interchangeable
5310PL0730310Interchangeable
interchangeable cross-reference
interchangeable
5310PL1849343Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TYPEAGRADE1CLASSB?
TYPEAGRADE1CLASSB is a WASHER,FLAT.
What parts can replace TYPEAGRADE1CLASSB?
There are 23 known substitutes for TYPEAGRADE1CLASSB: G302439-3, 22NM256, 24NM26 and 20 more. Substitute compatibility should be verified for your specific system.
Is TYPEAGRADE1CLASSB still available?
TYPEAGRADE1CLASSB is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026