The Damping Unit, cataloged under National Stock Number 6610-00-049-3989, is classified within Federal Supply Class 6610 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Kelly Manufacturing Company. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 6610-00-049-3989 |
| Primary Part Number | A3775-03 |
| Item Name | Damping Unit |
| FSC / FSG | 6610 / 66 — No Item Name Available |
| Manufacturer | Kelly Manufacturing Company |
| Status | CANCELLED |
| General Characteristics Item Description | BRASS QQ&B&613,ACTUAL WEIGHT 0.0077 LBS LBS |
| FSC Application Data | FLIGHT INSTRUMENT,B52,KC135,C130 |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A3775-03 | Allen R C Co Inc Cash Register Div (USA) |
| A3775-03 PRIMARY | Kelly Manufacturing Company (USA) |
| A3775-03 | Allen R C Instruments Inc (USA) |
| C63106X | Allen R C Co Inc Cash Register Div (USA) |
| B4-139 | Fl Aerospace Corp Janitrol Aero Div/general Design (USA) |
| 6287 | Fl Aerospace Corp Janitrol Aero Div/general Design (USA) |
NSN 6610-00-049-3989 is a Damping Unit, manufactured by Kelly Manufacturing Company, classified under FSC 6610 (No Item Name Available). Status: cancelled.
NSN 6610-00-049-3989 has 6 cross-referenced part numbers: A3775-03 (Allen R C Co Inc Cash Register Div), A3775-03 (Kelly Manufacturing Company), A3775-03 (Allen R C Instruments Inc), C63106X (Allen R C Co Inc Cash Register Div), B4-139 (Fl Aerospace Corp Janitrol Aero Div/general Design) and 1 more.
There are 7 known substitutes for 6610-00-049-3989: 5305-00-010-0751, 3110-00-144-8574, 5930-00-678-0870 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for A3775-03: General Characteristics Item Description: BRASS QQ&B&613,ACTUAL WEIGHT 0.0077 LBS LBS; End Item Identification: 66103880068; AIRCRAFT, T-37; HELICOPTER,IROQUOIS UH-1; FSC Application Data: FLIGHT INSTRUMENT,B52,KC135,C130. 3 total characteristics are documented in the Federal Logistics Information System.
NSN 6610-00-049-3989 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.