The Bearing,sleeve, cataloged under National Stock Number 3120-00-421-7889, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-421-7889 |
| Primary Part Number | S8507FAZ |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Corner Shape | SQUARE INSIDE RIGHT CORNER |
| Corner Shape | SQUARE LEFT FLANGE BODY CORNER |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Flange Outside Diameter | 4.0000 INCHES NOMINAL IN |
| Body Outside Diameter | 3.6260 INCHES MINIMUM AND 3.6266 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | ASTM A159 GRADE SAE G3500 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 2.7525 INCHES MINIMUM AND 2.7543 INCHES MAXIMUM IN |
| Flange Width | 0.5580 INCHES MINIMUM AND 0.5620 INCHES MAXIMUM IN |
| Material | LUBRICANT DRY FILM LUBRICATION |
| Material | IRON OVERALL |
| 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 |
|---|---|
| S8507FAZ PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| S8507FA7127 | 5/9 Secondary reference Siemens Energy, Inc. |
| S8507FA7127 | 5/9 Secondary reference Circor Pumps North America Llc |
| S8507FA | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 3120-00-421-7889 is a Bearing,sleeve, manufactured by Circor Pumps North America Llc, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-421-7889 has 1 manufacturer part number on file: S8507FAZ (Circor Pumps North America Llc).
Key specifications for S8507FAZ: Corner Shape: SQUARE INSIDE RIGHT CORNER; Corner Shape: SQUARE LEFT FLANGE BODY CORNER; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER. 14 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.