The Guide,valve Stem, cataloged under National Stock Number 4810-01-503-8698, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Flowserve Us Company Div Flow Control Division. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-503-8698 |
| Primary Part Number | 001021.432.000 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Flowserve Us Company Div Flow Control Division |
| Status | ACTIVE |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| PL161239.001 ITEM 87 | Flowserve Us Company Div Flow Control Division (USA) |
| 001021.432.000 PRIMARY | Flowserve Us Company Div Flow Control Division (USA) |
| Reference | Meaning |
|---|---|
| 10013202 | 5/9 Secondary reference Flowserve Us Company Div Flow Control Division |
NSN 4810-01-503-8698 is a Guide,valve Stem, manufactured by Flowserve Us Company Div Flow Control Division, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-503-8698 has 2 manufacturer part numbers on file: PL161239.001 ITEM 87 (Flowserve Us Company Div Flow Control Division), 001021.432.000 (Flowserve Us Company Div Flow Control Division).
1 possible match (shared part number, not a government interchangeability claim): 2540-01-583-1961. Verify interchangeability with system specifications before substitution.
Key specifications for 001021.432.000: Special Features: THIS IS THE UPPER STEM GUIDE. FOR THE LOWER STEM GUIDE SEE NSN 4810-01-503-8701.; Part Name Assigned by Controlling Agency: GUIDE, 0.88 STEM; End Item Identification: 4810-01-503-8694; MK1-X MEGASTREAM GLOBE VALVE; Material: COPPER ALLOY. 1 specification is 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.