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PartsTable / COMPONENT / 593-6406216 FIND 28
593-6406216 FIND 28 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 OR NICKEL ALLOY R-405, casehardening_indicator: NOT CASEHARDENED, material_document_and_classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-426-4559, 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
593-6406216 FIND 28
NSN: 5325-01-426-4559
FSC: 5325
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OR NICKEL ALLOY R-405
casehardening_indicatorNOT CASEHARDENED
material_document_and_classificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
NSN5325-01-426-4559
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 593-6406216 FIND 28 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: NICKEL ALLOY 400 OR NICKEL ALLOY R-405
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY R-405
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
211067818Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-24704/1SDInterchangeable
interchangeable cross-reference
interchangeable
593-6405224 FIND 4501-4601Interchangeable
interchangeable cross-reference
interchangeable
593-6405224 PIECE 16Interchangeable
interchangeable cross-reference
interchangeable
6405224Interchangeable
interchangeable cross-reference
interchangeable
6405224 PIECE 6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 593-6406216 FIND 28?
593-6406216 FIND 28 is a RING,RETAINING.
What parts can replace 593-6406216 FIND 28?
There are 11 known substitutes for 593-6406216 FIND 28: 211067818, MIL-F-24704/1SD, 593-6405224 FIND 4501-4601 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 593-6406216 FIND 28?
593-6406216 FIND 28 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-426-4559. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026