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Technical Data Sheet
PartsTable / COMPONENT / 643A412 PIECE 3
643A412 PIECE 3 ✓ 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. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-715-1152, 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
643A412 PIECE 3
NSN: 5325-00-715-1152
FSC: 5325
CAGE: 01289 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
Part Number643A412 PIECE 3
NSN5325-00-715-1152
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 643A412 PIECE 3 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 34
274694Interchangeable
interchangeable cross-reference
interchangeable
1820811-57Interchangeable
interchangeable cross-reference
interchangeable
102-0221Interchangeable
interchangeable cross-reference
interchangeable
26316001-05Interchangeable
interchangeable cross-reference
interchangeable
ES281-37SInterchangeable
interchangeable cross-reference
interchangeable
10-92815-37Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 643A412 PIECE 3?
643A412 PIECE 3 is a RING,RETAINING.
What parts can replace 643A412 PIECE 3?
There are 34 known substitutes for 643A412 PIECE 3: 274694, 1820811-57, 102-0221 and 31 more. Substitute compatibility should be verified for your specific system.
Is 643A412 PIECE 3 still available?
643A412 PIECE 3 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