The Cover,lower,by-Pass, cataloged under National Stock Number 2990-01-133-7994, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Brp Us 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-133-7994 |
| Primary Part Number | 386364 |
| Item Name | Cover,lower,by-Pass |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Brp Us Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CAST ALUMINUM; SIX MIG HOLES; 0.281 IN. DIA OF MTG HOLES; 3.433 IN. O/A HEIGHTH; THREE HOLES IN CENTER OF COVER COUNTERBORED 0.220 IN. DIA BY 0.030 IN. DEEP AND TAPPED 10-24 UNC-2B THD; 0.470 IN. DEPTH OF TAPPED THD; ONE HOLE TAPPED 1/4-20 UNC-2B THD BY 0.540 IN. DEEP; 1.750 IN. C TO C BETWEEN MTG HOLES AT TOP; 2.570 IN. C TO C BETWEEN MTG HOLES AT BOTTOM 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 |
|---|---|
| 386364 PRIMARY | Brp Us Inc (USA) |
| Reference | Meaning |
|---|---|
| 386364 | 5/9 Secondary reference U.S. Government activity |
NSN 2990-01-133-7994 is a Cover,lower,by-Pass, manufactured by Brp Us Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-133-7994 has 1 manufacturer part number on file: 386364 (Brp Us Inc).
Key specifications for 386364: General Characteristics Item Description: CAST ALUMINUM; SIX MIG HOLES; 0.281 IN. DIA OF MTG HOLES; 3.433 IN. O/A HEIGHTH; THREE HOLES IN CENTER OF COVER COUNTERBORED 0.220 IN. DIA BY 0.030 IN. DEEP AND TAPPED 10-24 UNC-2B THD; 0.470 IN. DEPTH OF TAPPED THD; ONE HOLE TAPPED 1/4-20 UNC-2B THD BY 0.540 IN. DEEP; 1.750 IN. C TO C BETWEEN MTG HOLES AT TOP; 2.570 IN. C TO C BETWEEN MTG HOLES AT BOTTOM 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.