The Aligning Tool, cataloged under National Stock Number 4921-00-573-8784, is classified within Federal Supply Class 4921 (Torpedo Maintenance, Repair, and Checkout Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4921-00-573-8784 |
| Primary Part Number | 1154841 |
| Item Name | Aligning Tool |
| FSC / FSG | 4921 / 49 — Torpedo Maintenance, Repair, and Checkout Specialized Equipment |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| General Characteristics Item Description | CRES AISI 416,ANNEALED,COLD DRAWN,PASSIVATE,0.499 IN. MIN 0.500 IN. MAX OD SMALL OD,0.681 IN. MIN 0.682 IN. MAX BODY DIA,1.000 IN. FLANGE OD,0.188 IN. W,8.563 IN. LG O/A 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 |
|---|---|
| 1154841 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1154841 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 4921-00-573-8784 is a Aligning Tool, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4921, Torpedo Maintenance, Repair, and Checkout Specialized Equipment. Status: active.
NSN 4921-00-573-8784 has 1 manufacturer part number on file: 1154841 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1154841: General Characteristics Item Description: CRES AISI 416,ANNEALED,COLD DRAWN,PASSIVATE,0.499 IN. MIN 0.500 IN. MAX OD SMALL OD,0.681 IN. MIN 0.682 IN. MAX BODY DIA,1.000 IN. FLANGE OD,0.188 IN. W,8.563 IN. LG O/A IN. 1 specification is 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.