The Ring,electrical Contact, cataloged under National Stock Number 5977-00-686-5201, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Nav Systems Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-686-5201 |
| Primary Part Number | 49406-1 |
| Item Name | Ring,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Nav Systems Inc. |
| Status | ACTIVE |
| FSC Application Data | WIND DIRECTION AND SPEED INDICATOR |
| Overall Diameter | 1.000 INCHES NOMINAL IN |
| Precious Material | SILVER |
| Precious Material and Weight | 0.040 SILVER GRAINS, TROY |
| Shape | CYLINDRICAL |
| Mounting Configuration | 0.937 IN. PORM 0.002 IN. PRESS MTG IN |
| Precious Material and Location | OVERALL SILVER |
| Material | SILVER |
| 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 |
|---|---|
| 49406-1 PRIMARY | Nav Systems Inc. (USA) |
| Reference | Meaning |
|---|---|
| 49406-1 | 5/2 Secondary reference U.S. Government activity |
| 49406-1E | 5/9 Secondary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
NSN 5977-00-686-5201 is a Ring,electrical Contact, manufactured by Nav Systems Inc., classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-686-5201 has 1 manufacturer part number on file: 49406-1 (Nav Systems Inc.).
Key specifications for 49406-1: FSC Application Data: WIND DIRECTION AND SPEED INDICATOR; Overall Diameter: 1.000 INCHES NOMINAL IN; Precious Material: SILVER; Precious Material and Weight: 0.040 SILVER GRAINS, TROY. 8 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.