The Flange,gland,valve, cataloged under National Stock Number 4820-01-345-1529, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-345-1529 |
| Primary Part Number | 29124 AA ITEM 3L1 |
| Item Name | Flange,gland,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Flange Shape | ROUND |
| Criticality Code Justification | ZZZY |
| Valve Size | 1.000 INCHES IN |
| Bolt Hole Quantity | 4 |
| Material | STEEL COMP 316 |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 29124 AA ITEM 3L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 69121L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 69121 | 3/1 Design control — primary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
| 29124 AA ITEM 3 | 5/1 Secondary reference Cae Vanguard Ltd |
NSN 4820-01-345-1529 is a Flange,gland,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-345-1529 has 2 manufacturer part numbers on file: 29124 AA ITEM 3L1 (Naval Inventory Control Point Mechanicsburg), 69121L1 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4210-01-471-2610. Verify interchangeability with system specifications before substitution.
Key specifications for 29124 AA ITEM 3L1: Flange Shape: ROUND; Criticality Code Justification: ZZZY; Valve Size: 1.000 INCHES IN; Bolt Hole Quantity: 4. 6 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.