The Coupling Half,shaft, cataloged under National Stock Number 3010-01-338-5651, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is L & L Tool and Machine Works,inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-338-5651 |
| Primary Part Number | 243-6627903 ITEM 1 |
| Item Name | Coupling Half,shaft |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | L & L Tool and Machine Works,inc. |
| Status | ACTIVE |
| Bore Length | 4.4370 INCHES NOMINAL IN |
| Body Style | MULTIPLE POSITIONING HOLES, RECESSED FACE |
| Outside Diameter | 5.750 INCHES NOMINAL IN |
| Features Provided | KEYWAY |
| Bore Shape | STRAIGHT |
| Bore Diameter | 1.9990 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| 243-6627903 ITEM 1 PRIMARY | L & L Tool and Machine Works,inc. (USA) |
| Reference | Meaning |
|---|---|
| 1026623 | 5/9 Secondary reference U.S. Government activity |
| 6627903 | D/9 Drawing number reference only Naval Sea Systems Command |
| 243-050/1 | 5/9 Secondary reference U.S. Government activity |
| 6627903 ITEM 1 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 3010-01-338-5651 is a Coupling Half,shaft, manufactured by L & L Tool and Machine Works,inc., classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-338-5651 has 1 manufacturer part number on file: 243-6627903 ITEM 1 (L & L Tool and Machine Works,inc.).
Key specifications for 243-6627903 ITEM 1: Bore Length: 4.4370 INCHES NOMINAL IN; Body Style: MULTIPLE POSITIONING HOLES, RECESSED FACE; Overall Length: 4.625 INCHES NOMINAL IN; Outside Diameter: 5.750 INCHES NOMINAL IN. 7 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.