The Screw,shoulder, cataloged under National Stock Number 5305-00-385-4741, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-385-4741 |
| Primary Part Number | HT41UA7 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 0.890 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN |
| Shoulder Length | 0.327 INCHES MINIMUM AND 0.349 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.264 INCHES MINIMUM AND 0.265 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.502 INCHES MINIMUM AND 0.507 INCHES MAXIMUM 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 |
|---|---|
| HT41UA7 PRIMARY | Hi-Shear Corporation (USA) |
| 54267-4-7 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT41UA7 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT409A4-7 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| HT41UA7 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| HT409A4-7 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M50-4-7 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT409A4-7 | 5/9 Secondary reference U.S. Government activity |
| 54267-4-7 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-00-385-4741 is a Screw,shoulder, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-385-4741 has 6 manufacturer part numbers on file: HT41UA7 (Hi-Shear Corporation), 54267-4-7 (Sps Technologies, Llc Dba PB Fasteners), HT41UA7 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT409A4-7 (Fairchild Fasteners Europe - Vsd Gmbh), HT41UA7 (Fairchild Fasteners Europe - Vsd Gmbh) and 1 more.
Key specifications for HT41UA7: Fastener Length: 0.890 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN; Shoulder Length: 0.327 INCHES MINIMUM AND 0.349 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.264 INCHES MINIMUM AND 0.265 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN. 15 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.