The Bearing,sleeve, cataloged under National Stock Number 3120-01-236-1870, 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 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3120-01-236-1870 |
| Primary Part Number | W1231AS-4 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Material Document and Classification | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Material | STEEL COMP 1008 OR STEEL COMP 1017 OR STEEL COMP 1020 OR STEEL COMP 1030 OR STEEL COMP 1040 OR STEEL COMP 1050 OR STEEL COMP 1118 OR STEEL COMP 1141 OR STEEL COMP 1151 OR STEEL COMP 1215 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 |
|---|---|
| W1231AS-4 PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SG-3690 PIECE 56 | 5/9 Secondary reference Circor Pumps North America Llc |
| W1231AS-4 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG-3690 PIECE 56 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 3120-01-236-1870 is a Bearing,sleeve, manufactured by Circor Pumps North America Llc, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-236-1870 has 1 manufacturer part number on file: W1231AS-4 (Circor Pumps North America Llc).
Key specifications for W1231AS-4: Material Document and Classification: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL; Material: STEEL COMP 1008 OR STEEL COMP 1017 OR STEEL COMP 1020 OR STEEL COMP 1030 OR STEEL COMP 1040 OR STEEL COMP 1050 OR STEEL COMP 1118 OR STEEL COMP 1141 OR STEEL COMP 1151 OR STEEL COMP 1215 OVERALL. 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.