The Strap,muffler, cataloged under National Stock Number 2990-00-646-7004, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Am General Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-646-7004 |
| Primary Part Number | 642777 |
| Item Name | Strap,muffler |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Am General Llc |
| Status | ACTIVE |
| General Characteristics Item Description | 16 GAGE STEEL,1.5 IN.W,2.75 IN.L,2 HOLES 11/32 IN.DIA,1.5 IN.C-C 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 |
|---|---|
| 642777 PRIMARY | Am General Llc (USA) |
| Reference | Meaning |
|---|---|
| 00642777 | 5/9 Secondary reference Spalla Inc |
NSN 2990-00-646-7004 is a Strap,muffler, manufactured by Am General Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-646-7004 has 1 manufacturer part number on file: 642777 (Am General Llc).
3 possible matches (shared part number, not a government interchangeability claim): 6150-01-081-2706, 5955-01-212-7976, 1010-01-580-8965. Verify interchangeability with system specifications before substitution.
Key specifications for 642777: General Characteristics Item Description: 16 GAGE STEEL,1.5 IN.W,2.75 IN.L,2 HOLES 11/32 IN.DIA,1.5 IN.C-C 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.