The Seat,valve, cataloged under National Stock Number 4820-01-435-0443, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Newmans Inc New Jersey Div. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-435-0443 |
| Primary Part Number | M31F10812 77 ITEM 2 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Newmans Inc New Jersey Div |
| Status | ACTIVE |
| Material Document and Classification | AST-182GR F6A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| M31F10812 77 ITEM 2 PRIMARY | Newmans Inc New Jersey Div (USA) |
| Reference | Meaning |
|---|---|
| M31F10812 77 | D/9 Drawing number reference only Newmans Inc New Jersey Div |
NSN 4820-01-435-0443 is a Seat,valve, manufactured by Newmans Inc New Jersey Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-435-0443 has 1 manufacturer part number on file: M31F10812 77 ITEM 2 (Newmans Inc New Jersey Div).
Key specifications for M31F10812 77 ITEM 2: Material Document and Classification: AST-182GR F6A ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Special Features: USED ON CLASS 150 CAST STEEL SWING CHECK VALVE, NEWMANS INC.; End Item Identification: WEAPONS SYSTEM MARS CLASS AFS; Material: STEEL OVERALL. 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.