The Screw,close Tolerance, cataloged under National Stock Number 5305-01-463-0503, 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 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-463-0503 |
| Primary Part Number | HT353P3-11 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.0800 INCHES MINIMUM AND 0.0820 INCHES MAXIMUM IN |
| Fastener Length | 1.078 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Thread Length | 0.406 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.1900 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.688 INCHES NOMINAL IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.4625 INCHES MINIMUM AND 0.4672 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 |
|---|---|
| HT353P3-11 PRIMARY | Hi-Shear Corporation (USA) |
| HT353P3-11 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HT4058-3-11A | 7/2 Vendor item drawing reference Huck International, Inc |
| ST3M794V3-11A | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4058-3-11A | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-463-0503 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-463-0503 has 2 manufacturer part numbers on file: HT353P3-11 (Hi-Shear Corporation), HT353P3-11 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for HT353P3-11: Head Height: 0.0800 INCHES MINIMUM AND 0.0820 INCHES MAXIMUM IN; Fastener Length: 1.078 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN; Thread Length: 0.406 INCHES NOMINAL IN; Nominal Thread Diameter: 0.1900 INCHES 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.