The Screw,machine, cataloged under National Stock Number 5305-01-221-7731, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is M.s. Aerospace Inc. Dba Ms Aerospace Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-221-7731 |
| Primary Part Number | 4054210 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | M.s. Aerospace Inc. Dba Ms Aerospace Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.030 INCHES MINIMUM IN |
| Head Height | 0.211 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN |
| Fastener Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Thread Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | DOUBLE HEXAGON W/ HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.219 INCHES NOMINAL IN |
| Screw Material | STEEL CORROSION RESISTING |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNJC |
| 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 |
|---|---|
| 4054210 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4054210 PRIMARY | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| Reference | Meaning |
|---|---|
| 5305PL0783988 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5305-01-221-7731 is a Screw,machine, manufactured by M.s. Aerospace Inc. Dba Ms Aerospace Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-221-7731 has 2 manufacturer part numbers on file: 4054210 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4054210 (M.s. Aerospace Inc. Dba Ms Aerospace Inc).
Key specifications for 4054210: Extended Washer Thickness: 0.030 INCHES MINIMUM IN; Head Height: 0.211 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN; Fastener Length: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN; Extended Washer Diameter: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN. 13 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.