The Sleeve,labyrinth, cataloged under National Stock Number 4310-00-919-9014, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Flowserve Corporation Dba Flowserve Div Services Business Unit. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4310-00-919-9014 |
| Primary Part Number | 2520.000 |
| Item Name | Sleeve,labyrinth |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Flowserve Corporation Dba Flowserve Div Services Business Unit |
| Status | ACTIVE |
| General Characteristics Item Description | BRONZE; 4.625 IN. OD; 1.938 IN. MAX H; BORE THREADED; 2.000-11-UNS RH; TWO THD HOLES 0.375-16 UNC 2B RH-SPACED 180 DEG APART 2.750 IN. C TO C; DRILLED TO A DEPTH OF 0.812 IN. IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4310-00-919-9014 is a Sleeve,labyrinth, manufactured by Flowserve Corporation Dba Flowserve Div Services Business Unit, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-919-9014 has 2 manufacturer part numbers on file: 2520X (Flowserve Corporation Dba Flowserve Div Services Business Unit), 2520.000 (Flowserve Corporation Dba Flowserve Div Services Business Unit).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-374-2520. Verify interchangeability with system specifications before substitution.
Key specifications for 2520.000: General Characteristics Item Description: BRONZE; 4.625 IN. OD; 1.938 IN. MAX H; BORE THREADED; 2.000-11-UNS RH; TWO THD HOLES 0.375-16 UNC 2B RH-SPACED 180 DEG APART 2.750 IN. C TO C; DRILLED TO A DEPTH OF 0.812 IN. IN. 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.