The Seat,valve, cataloged under National Stock Number 4820-01-502-6869, 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 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-502-6869 |
| Primary Part Number | C10532.002.171VM |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Thread Length | 2.740 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Taper Minor Diameter | 4.000 INCHES NOMINAL IN |
| Style Designator | PLAIN THREADED |
| Material Document and Classification | ASTM A351 GR CF8M ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Body Inside Diameter | 4.000 INCHES NOMINAL IN |
| Nominal Thread Size | 4.812 INCHES SINGLE THREADED PORTION IN |
| Taper Length | 0.310 INCHES NOMINAL IN |
| Seat Radius | 2.000 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 14 SINGLE THREADED PORTION |
| Material | STEEL COMP 316 SEAT |
| Seat Angle in Deg | 45.000 MINIMUM AND 60.000 MAXIMUM |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| Reference Number Differentiating Characteristics | ASDIFFERENTIATED BY: PART REQUIRES SPECIAL MATERIAL CONTROL AND QUALITY ASSURANCE, WHICH SUPPORT THE NON-MAGNETIC SIGNATURE OF MINESWEEPERS. |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| C10532.002.171VM | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| MH101 | D/9 Drawing number reference only Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| MH101 FIND NO.3 | 5/1 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| C10532.002.171 | 3/1 Design control — primary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-502-6869 is a Seat,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-502-6869 has 1 manufacturer part number on file: C10532.002.171VM (Naval Inventory Control Point Mechanicsburg).
Key specifications for C10532.002.171VM: Overall Height: 3.120 INCHES NOMINAL IN; Thread Length: 2.740 INCHES NOMINAL SINGLE THREADED PORTION IN; Taper Minor Diameter: 4.000 INCHES NOMINAL IN; Style Designator: PLAIN THREADED. 15 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.