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4128-0009 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4128-0009: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5325-00-775-5071, 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
4128-0009
NSN: 5325-00-775-5071
FSC: 5325 — Fastening Devices
CAGE: 63409 — FINNIGAN CORPORATION (USA)
SPECIFICATIONS
Part Number4128-0009
NSN5325-00-775-5071
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4128-0009 · 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
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 4
4127-0010Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
CA18028Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
717801743-001Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
1560003-001Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4128-0009?
4128-0009 is a RING,RETAINING.
What parts can replace 4128-0009?
There are 4 known substitutes for 4128-0009: 4127-0010, CA18028, 717801743-001 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4128-0009?
4128-0009 is cataloged in the U.S. Government catalog under NSN 5325-00-775-5071. This indicates validated use in U.S. government and defense supply chains.
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