The Screw,close Tolerance, cataloged under National Stock Number 5305-01-050-3830, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-050-3830 |
| Primary Part Number | HT4028L8-10M |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Fastener Length | 1.391 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN |
| Thread Length | 0.756 INCHES MINIMUM AND 0.806 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-466 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Grip Diameter | 0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.747 INCHES MINIMUM AND 0.752 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 |
|---|---|
| 11909V8L10M1 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M466V8L10M1 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M466V8L10M1 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4028L8-10M PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4028L8-10M PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT4028L8-10M | 5/9 Secondary reference U.S. Government activity |
| HT4028L8-10M | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| ST3M466V8L10M1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4028L8-10M | 3/2 Design control — primary reference U.S. Government activity |
| HT4028L8-10M | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M466V8L10M1 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HT4028L8-10M | 5/9 Secondary reference U.S. Government activity |
| ST3M466V8L10M1 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-050-3830 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-050-3830 has 5 manufacturer part numbers on file: 11909V8L10M1 (Reid Products Inc. Dba Reid Products Inc), ST3M466V8L10M1 (Sps Technologies, Llc Dba PB Fasteners), ST3M466V8L10M1 (Sps Technologies Ltd, Tj Brooks Division), HT4028L8-10M (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4028L8-10M (Hi-Shear Corporation).
Key specifications for HT4028L8-10M: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Fastener Length: 1.391 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN; Thread Length: 0.756 INCHES MINIMUM AND 0.806 INCHES MAXIMUM IN. 18 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.