The Collar,shaft, cataloged under National Stock Number 3040-01-122-8227, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Haywardindl. Products, Inc.. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-122-8227 |
| Primary Part Number | ST520-H-1MIL |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Haywardindl. Products, Inc. |
| Status | ACTIVE |
| Material Document and Classification | MIL-B-16540, GRADE A MIL SPEC SINGLE MATERIAL RESPONSE |
| Material | COPPER ALLOY 923 OR COPPER ALLOY 903 |
| 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 |
|---|---|
| ST520-H-1MIL PRIMARY | Haywardindl. Products, Inc. (USA) |
| ST050-0600F-11CA PIECE 18 | Haywardindl. Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| ST050-0600F-11CA | D/9 Drawing number reference only Haywardindl. Products, Inc. |
NSN 3040-01-122-8227 is a Collar,shaft, manufactured by Haywardindl. Products, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-122-8227 has 2 manufacturer part numbers on file: ST520-H-1MIL (Haywardindl. Products, Inc.), ST050-0600F-11CA PIECE 18 (Haywardindl. Products, Inc.).
Key specifications for ST520-H-1MIL: Material Document and Classification: MIL-B-16540, GRADE A MIL SPEC SINGLE MATERIAL RESPONSE; Material: COPPER ALLOY 923 OR COPPER ALLOY 903. 2 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.