The Shaft Assembly,flexible, cataloged under National Stock Number 3040-00-517-5237, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Clark Brothers Instrument Co. Government technical data includes 23 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-517-5237 |
| Primary Part Number | GFS-103500 |
| Item Name | Shaft Assembly,flexible |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Clark Brothers Instrument Co |
| Status | ACTIVE |
| Width Across Flats | 0.938 INCHES NOMINAL BOTH ENDS IN |
| Cross Section Size and Location | 0.188 INCHES NOMINAL DIAMETER BOTH ENDS IN |
| End Overall Diameter | 1.094 INCHES NOMINAL BOTH ENDS IN |
| Thread Length | 0.500 INCHES NOMINAL BOTH ENDS IN |
| End Connection Type | THREADED INTERNAL BOTH ENDS |
| Thread Location | INTERNAL BOTH ENDS |
| Core Diameter | 0.185 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND BOTH ENDS |
| Casing Length Between Ferrules | 96.000 INCHES NOMINAL IN |
| Core Rotation Direction | CLOCKWISE |
| Shank Outside Diameter | 0.594 INCHES NOMINAL BOTH ENDS IN |
| Core Removability | REMOVABLE |
| Core Overall Length | 97.625 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNS BOTH ENDS |
| Surface Treatment | ZINC CASING |
| Thread Class | 2A BOTH ENDS A |
| Wrenching Facility Type | HEXAGON BOTH ENDS |
| Material | STEEL CORE |
| Material | STEEL CASING |
| Casing Outside Diameter | 0.438 INCHES NOMINAL IN |
| Minimum Operating Radius | 6.000 INCHES IN |
| End Type | ROUND KEYED BOTH ENDS |
| Tip Length | 0.500 INCHES MINIMUM AND 1.125 INCHES MAXIMUM BOTH ENDS 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 |
|---|---|
| GFS-103500 PRIMARY | Clark Brothers Instrument Co (USA) |
| Reference | Meaning |
|---|---|
| 6520-111-96 | 5/9 Secondary reference Jones Instrument Corp |
| 1120-96 | 5/9 Secondary reference Jones Instrument Corp |
| 6520-111-96 | 5/9 Secondary reference Schulze Mfg., Inc. |
NSN 3040-00-517-5237 is a Shaft Assembly,flexible, manufactured by Clark Brothers Instrument Co, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-517-5237 has 1 manufacturer part number on file: GFS-103500 (Clark Brothers Instrument Co).
1 possible match (shared part number, not a government interchangeability claim): 6130-01-425-3662. Verify interchangeability with system specifications before substitution.
Key specifications for GFS-103500: Width Across Flats: 0.938 INCHES NOMINAL BOTH ENDS IN; Cross Section Size and Location: 0.188 INCHES NOMINAL DIAMETER BOTH ENDS IN; End Overall Diameter: 1.094 INCHES NOMINAL BOTH ENDS IN; Thread Length: 0.500 INCHES NOMINAL BOTH ENDS IN. 23 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.