The Screw,shoulder, cataloged under National Stock Number 5305-01-727-5901, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Richard Manno & Company 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-727-5901 |
| Primary Part Number | 4437-416SS |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Richard Manno & Company Inc. |
| Status | ACTIVE |
| Head Height | 0.21875 INCHES NOMINAL IN |
| Fastener Length | 0.90625 INCHES NOMINAL IN |
| Shoulder Length | 0.25 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.4375 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.25 INCHES IN |
| Head Style | KNURLED NO. 5 |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 416 OVERALL |
| Head Diameter | 0.5 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 |
|---|---|
| 4437-416SS PRIMARY | Richard Manno & Company Inc. (USA) |
NSN 5305-01-727-5901 is a Screw,shoulder, manufactured by Richard Manno & Company Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-727-5901 has 1 manufacturer part number on file: 4437-416SS (Richard Manno & Company Inc.).
Key specifications for 4437-416SS: Head Height: 0.21875 INCHES NOMINAL IN; Fastener Length: 0.90625 INCHES NOMINAL IN; Shoulder Length: 0.25 INCHES NOMINAL FIRST SHOULDER IN; Thread Length: 0.4375 INCHES NOMINAL 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.