The Screw,machine, cataloged under National Stock Number 5305-01-551-3771, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Hilliard Corp. Government technical data includes 16 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 | 5305-01-551-3771 |
| Primary Part Number | 554-48-410C |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Hilliard Corp |
| Status | ACTIVE |
| Extended Washer Thickness | 0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Head Height | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Screw Surface Treatment | OXIDE |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Thread Length | 1.125 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.249 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| Screw Material | STEEL |
| Minimum Tensile Strength | 170000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNRF |
| 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 |
|---|---|
| 554-48-410C PRIMARY | The Hilliard Corp (USA) |
NSN 5305-01-551-3771 is a Screw,machine, manufactured by The Hilliard Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-551-3771 has 1 manufacturer part number on file: 554-48-410C (The Hilliard Corp).
Key specifications for 554-48-410C: Extended Washer Thickness: 0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Head Height: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Screw Surface Treatment: OXIDE; Fastener Length: 1.500 INCHES NOMINAL IN. 16 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.