The Plunger Relief Valve, cataloged under National Stock Number 2990-00-447-2016, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Concentric Rockford Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-447-2016 |
| Primary Part Number | PA7105 |
| Item Name | Plunger Relief Valve |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Concentric Rockford Inc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL;0.700 IN. O/A LG;0.375 IN.DIA;FIRST END SOLID,CHAMFER 0.062 IN. ON A 45 DEGREE ANGLE;GROOVE 0.125 IN.W,0.016 IN.DEEP;LOCATED 0.125 IN.FROM FIRST END IN |
| 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 |
|---|---|
| PA7105 PRIMARY | Concentric Rockford Inc (USA) |
| Reference | Meaning |
|---|---|
| PA7105 | 5/9 Secondary reference Cummins Inc. |
| 271073R1 | 5/2 Secondary reference U.S. Government activity |
NSN 2990-00-447-2016 is a Plunger Relief Valve, manufactured by Concentric Rockford Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-447-2016 has 1 manufacturer part number on file: PA7105 (Concentric Rockford Inc).
Key specifications for PA7105: General Characteristics Item Description: STEEL;0.700 IN. O/A LG;0.375 IN.DIA;FIRST END SOLID,CHAMFER 0.062 IN. ON A 45 DEGREE ANGLE;GROOVE 0.125 IN.W,0.016 IN.DEEP;LOCATED 0.125 IN.FROM FIRST END 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.