The Cover,manifold Insulation, cataloged under National Stock Number 2990-00-427-7441, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-427-7441 |
| Item Name | Cover,manifold Insulation |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Status | ACTIVE |
| General Characteristics Item Description | INNER FOIL 0.003 IN. NOM THK,OUTER FOIL 0.005 IN. NOM THK,FOIL MATERIAL CRES MIL-S-6721 OR CRESQQ-S-766 CLASS 321 OR 347 FINISH 2D,INNER LAYER INSULATION MATERIALSILICA FIBER OR EQUIVALENT AMS 3680,O/A LG 21.000 IN. NOM,FIRST END3.500 IN. NOM W,SECOND END 2.750 IN. NOM W,EIGHT CAPSTANS FSCM 25167REF NO. HTM1001,EIGHT WASHERS FSCM 25167 REF NO. HTM1005,CAPSTANSLOCATED 0.500 IN. NOM FROM FIRST END ALONG LG 5.500 IN. NOMBETWEEN CENTERS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2586727 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2990-00-427-7441 is a Cover,manifold Insulation, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
Key specifications for 2990-00-427-7441: General Characteristics Item Description: INNER FOIL 0.003 IN. NOM THK,OUTER FOIL 0.005 IN. NOM THK,FOIL MATERIAL CRES MIL-S-6721 OR CRESQQ-S-766 CLASS 321 OR 347 FINISH 2D,INNER LAYER INSULATION MATERIALSILICA FIBER OR EQUIVALENT AMS 3680,O/A LG 21.000 IN. NOM,FIRST END3.500 IN. NOM W,SECOND END 2.750 IN. NOM W,EIGHT CAPSTANS FSCM 25167REF NO. HTM1001,EIGHT WASHERS FSCM 25167 REF NO. HTM1005,CAPSTANSLOCATED 0.500 IN. NOM FROM FIRST END ALONG LG 5.500 IN. NOMBETWEEN CENTERS IN; End Item Identification: 28152231695. 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.