The Ring,retaining, cataloged under National Stock Number 5325-01-051-8599, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-051-8599 |
| Primary Part Number | S-1429D |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Material Document and Classification | MIL-S-890,ALLOY NO. 2 MIL SPEC 1ST MATERIAL RESPONSE OR AISI 4150 ASSN STD 2ND MATERIAL RESPONSE |
| Material | STEEL OR STEEL COMP 4150 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S-1429D PRIMARY | Circor Pumps North America Llc (USA) |
| S-1429D0463 | Circor Pumps North America Llc (USA) |
| SF-10524 ITEM 044 | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| S1429D | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| S-1429D | 5/9 Secondary reference Siemens Energy, Inc. |
| SF-10524 ITEM 044 | 5/9 Secondary reference Siemens Energy, Inc. |
| S-1429D0463 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 5325-01-051-8599 is a Ring,retaining, manufactured by Circor Pumps North America Llc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-051-8599 has 3 manufacturer part numbers on file: S-1429D (Circor Pumps North America Llc), S-1429D0463 (Circor Pumps North America Llc), SF-10524 ITEM 044 (Circor Pumps North America Llc).
Key specifications for S-1429D: Material Document and Classification: MIL-S-890,ALLOY NO. 2 MIL SPEC 1ST MATERIAL RESPONSE OR AISI 4150 ASSN STD 2ND MATERIAL RESPONSE; Material: STEEL OR STEEL COMP 4150. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.