The Ball and Screw Assy, cataloged under National Stock Number 5305-01-571-8946, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-571-8946 |
| Primary Part Number | 123-8180878 ITEM 31M |
| Item Name | Ball and Screw Assy |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | ASSY CONSISTS OF BALL BEARING SCREW AND BALL NUT |
| 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 |
|---|---|
| 123-8180878 ITEM 31M | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87M540201-0002 | 3/2 Design control — primary reference U.S. Government activity |
| 123-8180878 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5305-01-571-8946 is a Ball and Screw Assy, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-571-8946 has 1 manufacturer part number on file: 123-8180878 ITEM 31M (Naval Sea Systems Command).
Key specifications for 123-8180878 ITEM 31M: General Characteristics Item Description: ASSY CONSISTS OF BALL BEARING SCREW AND BALL NUT; Overall Length: 21.380 INCHES NOMINAL IN; End Item Identification: GEAR OPERATOR ASSY HCH CUR INBD; W/S OHIO CLASS SSBN (TRIDENT). 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.