The Head Assembly,pressure, cataloged under National Stock Number 2540-00-319-5981, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Grinnell Fire Protection. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-00-319-5981 |
| Primary Part Number | 82450 |
| Item Name | Head Assembly,pressure |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Grinnell Fire Protection |
| Status | CANCELLED |
| General Characteristics Item Description | 1.733 IN. LENGTH WITH PISTON ACTUATED,1.500 IN. W OF LARGEST WRENCHING FLATS,1/8-27 NPT INTERNAL THD,7/8-20 UNEF-3 THD,1-1/4-18 UNEF-3 LARGEST THD,1.656 IN. LENGTH WITH PISTON RESET IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 840194 | Kidde Technologies, Inc Div Kidde Aerospace and Defense (USA) |
| 82450 PRIMARY | Grinnell Fire Protection (USA) |
| 8720283 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 2540003195981 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 2520007714511 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 82450 | 5/9 Secondary reference Baker Industries Inc Sub of Borg-Warner Corp |
| 840194 | 5/9 Secondary reference Kidde-Fenwal, Llc |
NSN 2540-00-319-5981 is a Head Assembly,pressure, manufactured by Grinnell Fire Protection, classified under FSC 2540, Vehicular Furniture and Accessories. Status: cancelled.
NSN 2540-00-319-5981 has 3 manufacturer part numbers on file: 840194 (Kidde Technologies, Inc Div Kidde Aerospace and Defense), 82450 (Grinnell Fire Protection), 8720283 (U S Army Tank Automotive Command Amsta-Im-Mm).
3 possible matches (shared part number, not a government interchangeability claim): 6680-01-019-3052, 5330-01-111-4107, 4210-01-442-2903. Verify interchangeability with system specifications before substitution.
Key specifications for 82450: General Characteristics Item Description: 1.733 IN. LENGTH WITH PISTON ACTUATED,1.500 IN. W OF LARGEST WRENCHING FLATS,1/8-27 NPT INTERNAL THD,7/8-20 UNEF-3 THD,1-1/4-18 UNEF-3 LARGEST THD,1.656 IN. LENGTH WITH PISTON RESET IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 2540-00-319-5981 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.