The Shaft Assembly,flexible, cataloged under National Stock Number 6680-00-357-0837, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Clark Brothers Instrument Co. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-00-357-0837 |
| Primary Part Number | GFS-100508 |
| Item Name | Shaft Assembly,flexible |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Clark Brothers Instrument Co |
| Status | ACTIVE |
| Cross Section Size and Location | 0.101 INCHES MINIMUM ACROSS FLATS AND 0.104 INCHES MAXIMUM ACROSS FLATS SECOND END IN |
| Cross Section Size and Location | 0.201 INCHES MINIMUM DIAMETER AND 0.205 INCHES MAXIMUM DIAMETER FIRST END IN |
| End Overall Diameter | 0.750 INCHES NOMINAL SECOND END IN |
| End Overall Diameter | 1.000 INCHES NOMINAL FIRST END IN |
| End Connection Type | THREADED INTERNAL BOTH ENDS |
| Core Diameter | 0.150 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND BOTH ENDS |
| Casing Length Between Ferrules | 200.000 INCHES NOMINAL IN |
| Core Removability | REMOVABLE |
| Core Overall Length | 200.920 INCHES MINIMUM AND 201.300 INCHES MAXIMUM IN |
| Screw Thread Series Designator | UNS FIRST END |
| Screw Thread Series Designator | UNF SECOND END |
| Surface Treatment | ZINC CASING |
| Thread Class | 2B BOTH ENDS |
| Wrenching Facility Type | SERRATED SURFACE BOTH ENDS |
| Material | STEEL CORE |
| Material | STEEL CASING |
| Casing Outside Diameter | 0.445 INCHES NOMINAL IN |
| Minimum Operating Radius | 5.000 INCHES IN |
| Machined Feature Size | 0.-039 IN. TO 0.045 IN. H BY 0.058 IN. TO 0.063 IN. W DRIVE KEY FIRST END IN |
| End Type | ROUND KEYED FIRST END |
| End Type | SQUARE MALE SECOND END |
| Tip Length | 0.360 INCHES MINIMUM AND 0.420 INCHES MAXIMUM SECOND END IN |
| Tip Length | 0.620 INCHES MINIMUM AND 0.880 INCHES MAXIMUM FIRST END 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 |
|---|---|
| EE40454 | Oshkosh Defense Llc (USA) |
| GFS-100508 PRIMARY | Clark Brothers Instrument Co (USA) |
| Reference | Meaning |
|---|---|
| EE40454 | 5/9 Secondary reference Oshkosh Corp |
| 446900-1H-200 | 5/9 Secondary reference Stewart-Warner Corporation |
| 446035-200 | C/1 Advisory reference — outside the item-of-supply concept Stewart-Warner Corporation |
| 446035-200IN | 5/9 Secondary reference Stewart-Warner Corporation |
NSN 6680-00-357-0837 is a Shaft Assembly,flexible, manufactured by Clark Brothers Instrument Co, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-00-357-0837 has 2 manufacturer part numbers on file: EE40454 (Oshkosh Defense Llc), GFS-100508 (Clark Brothers Instrument Co).
Key specifications for GFS-100508: Cross Section Size and Location: 0.101 INCHES MINIMUM ACROSS FLATS AND 0.104 INCHES MAXIMUM ACROSS FLATS SECOND END IN; Cross Section Size and Location: 0.201 INCHES MINIMUM DIAMETER AND 0.205 INCHES MAXIMUM DIAMETER FIRST END IN; End Overall Diameter: 0.750 INCHES NOMINAL SECOND END IN; End Overall Diameter: 1.000 INCHES NOMINAL FIRST END IN. 24 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.