The Guide,valve Stem, cataloged under National Stock Number 4810-01-503-8701, 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 2 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-503-8701 |
| Primary Part Number | 001021.825.000 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Flowserve Us Company Div Flow Control Division |
| Status | ACTIVE |
| Material | COBALT ALLOY |
| Metallic Hardness Rating | 37.0 MINIMUM ROCKWELL C |
| 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 83 | Flowserve Us Company Div Flow Control Division (USA) |
| 001021.825.000 PRIMARY | Flowserve Us Company Div Flow Control Division (USA) |
| Reference | Meaning |
|---|---|
| 001021.825.000 | C/1 Advisory reference — outside the item-of-supply concept Pro-Quip Inc |
| 10000038 | 5/9 Secondary reference Flowserve Us Company Div Flow Control Division |
NSN 4810-01-503-8701 is a Guide,valve Stem, manufactured by Flowserve Us Company Div Flow Control Division, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-503-8701 has 2 manufacturer part numbers on file: PL161239.001 ITEM 83 (Flowserve Us Company Div Flow Control Division), 001021.825.000 (Flowserve Us Company Div Flow Control Division).
Key specifications for 001021.825.000: Special Features: THIS IS THE LOWER STEM GUIDE. FOR THE UPPER STEM GUIDE SEE NSN 4810-01-503-8698.; Part Name Assigned by Controlling Agency: GUIDE, 0.88 STEM; End Item Identification: 4810-01-503-8694; MK1-X MEGASTREAM GLOBE VALVE; Material: COBALT ALLOY. 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.