The Screw,machine, cataloged under National Stock Number 5305-01-044-6436, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Olympus America Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-044-6436 |
| Primary Part Number | CS128S |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Olympus America Inc |
| Status | ACTIVE |
| Head Height | 0.062 INCHES NOMINAL IN |
| Fastener Length | 0.875 INCHES MINIMUM IN |
| Thread Length | 0.847 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.073 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 72 |
| Thread Series Designator | UNF |
| Head Diameter | 0.111 INCHES NOMINAL 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 |
|---|---|
| CS128S PRIMARY | Olympus America Inc (USA) |
| Reference | Meaning |
|---|---|
| 655-509-9126 | 5/2 Secondary reference U.S. Government activity |
| CS128S | 3/9 Design control — primary reference Gyrus Acmi L.p. |
NSN 5305-01-044-6436 is a Screw,machine, manufactured by Olympus America Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-044-6436 has 1 manufacturer part number on file: CS128S (Olympus America Inc).
Key specifications for CS128S: Head Height: 0.062 INCHES NOMINAL IN; Fastener Length: 0.875 INCHES MINIMUM IN; Thread Length: 0.847 INCHES MINIMUM IN; Nominal Thread Diameter: 0.073 INCHES IN. 12 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.