The Guard,muffler-Exhaust Pipe,nonai, cataloged under National Stock Number 2990-01-485-7699, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Tighitco Inc.. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2990-01-485-7699 |
| Primary Part Number | 609S31944 |
| Item Name | Guard,muffler-Exhaust Pipe,nonai |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Tighitco Inc. |
| Status | ACTIVE |
| Outside Diameter | 6.000 INCHES NOMINAL IN |
| Material | GLASS FIBER |
| 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 |
|---|---|
| 609S31944 | Tighitco Inc. (USA) |
| Reference | Meaning |
|---|---|
| 13230E6317 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2990-01-485-7699 is a Guard,muffler-Exhaust Pipe,nonai, manufactured by Tighitco Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-485-7699 has 1 manufacturer part number on file: 609S31944 (Tighitco Inc.).
Key specifications for 609S31944: Outside Diameter: 6.000 INCHES NOMINAL IN; Overall Length: 11.380 INCHES NOMINAL IN; Special Features: MATERIAL, COVER-GREY SILICONE COATED FIBERGLASS CLOTH, INSULATION-FIBERGLASS CLOTH 0.500 IN THICK, WIRE MESH-CRES; INCLUDES CAPSTANS FOR SECURING SIZED FOR 0.032 IN SAFETY WIRE; THERMAL CAPACITY-RESISTS UP TO 2,000 DEGREES F, MELTS AT 3,000 DEGREES F; IDENTIFY IAW MIL-STD-130, METHOD OPTIONAL. IN; Part Name Assigned by Controlling Agency: WRAP, MUFFLER. 2 specifications are 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.