The Screw,machine, cataloged under National Stock Number 5305-01-661-9801, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-661-9801 |
| Primary Part Number | 91773A146 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Head Height | 0.103 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Hardness Rating | 100.0 ROCKWELL B NOMINAL |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Head Length | 0.260 INCHES NOMINAL IN |
| Head Minor Diameter | 0.26 INCHES NOMINAL IN |
| Screw Material | STEEL CORROSION RESISTING |
| Color | SILVER |
| Minimum Tensile Strength | 100000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE II |
| Thread Class | 2A A |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 91773A146 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5305-01-661-9801 is a Screw,machine, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-661-9801 has 1 manufacturer part number on file: 91773A146 (Mcmaster-Carr Supply Co).
Key specifications for 91773A146: Head Height: 0.103 INCHES NOMINAL IN; Thread Length: 0.375 INCHES NOMINAL IN; Hardness Rating: 100.0 ROCKWELL B NOMINAL; Nominal Thread Diameter: 0.138 INCHES IN. 14 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.