The Worm Shaft, cataloged under National Stock Number 3040-00-971-5975, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 28 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-971-5975 |
| Primary Part Number | 8615827 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| FSC Application Data | TELESCOPE |
| Teeth Hardness Rating | ROCKWELL C,50 MIN,55 MAX,FED,QQ-S-763,CLASS 440F COND A,OR ROCKWELL C,30 MIN,35 MAX,QQ-S-MLO,CLASS 416,COND A |
| Worm Body Length | 2.130 INCHES NOMINAL IN |
| Worm Thread Lead | 0.196 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763, CLASS 440F OR CLASS 416, COND A FED SPEC ALL MATERIAL RESPONSES |
| Worm Pitch Diameter | 0.196 INCHES NOMINAL IN |
| Worm Outside Diameter | 1.020 INCHES MINIMUM AND 1.022 INCHES MAXIMUM IN |
| Straight Unthreaded Section Diameter | 0.323 INCHES MINIMUM AND 0.325 INCHES MAXIMUM SECOND END THIRD PORTION IN |
| Unthreaded Section Pin Hole Diameter | 0.0940 INCHES NOMINAL FIRST END FOURTH PORTION IN |
| Unthreaded Section Pin Hole Diameter | 0.0940 INCHES NOMINAL SECOND END FIFTH PORTION IN |
| End Similarity | NOT IDENTICAL |
| Shaft Hardness Rating | OVERALL ROCKWELL C,50 MIN,55 MAX OF FED,QQ-S-763,CLASS 440F,COND A,OR ROCKWELL C,30 MIN,35 MAX,QQ-S-763,CLASS416 COND A LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment | PASSIVATE |
| Worm Thread Section Length | 1.870 INCHES MINIMUM AND 1.880 INCHES MAXIMUM IN |
| Worm Helix Angle | 3 DEG 59 MIN 12 SEC |
| Material | STEEL COMP 440F OR STEEL COMP 416 |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | RIGHT-HAND |
| Worm Pressure Angle in Deg | 20.000 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 0.094 INCHES MINIMUM AND 0.096 INCHES MAXIMUM FIRST END SECOND PORTION IN |
| Straight Unthreaded Length | 0.094 INCHES MINIMUM AND 0.096 INCHES MAXIMUM SECOND END THIRD PORTION IN |
| Straight Unthreaded Length | 0.125 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Length | 0.125 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Straight Unthreaded Length | 0.125 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Straight Unthreaded Length | 0.463 INCHES NOMINAL SECOND END FOURTH PORTION IN |
| Straight Unthreaded Length | 0.484 INCHES NOMINAL FIRST END THIRD PORTION 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 |
|---|---|
| 8615827 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| Reference | Meaning |
|---|---|
| 3040-00-971-5975 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 3040-00-971-5975 is a Worm Shaft, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-971-5975 has 1 manufacturer part number on file: 8615827 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 8615827: Shaft Location: BOTH ENDS OF WORM; FSC Application Data: TELESCOPE; Teeth Hardness Rating: ROCKWELL C,50 MIN,55 MAX,FED,QQ-S-763,CLASS 440F COND A,OR ROCKWELL C,30 MIN,35 MAX,QQ-S-MLO,CLASS 416,COND A; Worm Body Length: 2.130 INCHES NOMINAL IN. 28 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.