The Screw,close Tolerance, cataloged under National Stock Number 5305-01-030-1768, 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 16 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-030-1768 |
| Primary Part Number | HT4024L4-15 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Fastener Length | 1.392 INCHES MINIMUM AND 1.422 INCHES MAXIMUM IN |
| Thread Length | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Material Document and Classification | 23-112,MCDONNEL DOUGLAS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| 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 | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.390 INCHES MINIMUM AND 0.395 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 |
|---|---|
| 11907-4L15-1 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4024L4-15 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M455-4L15-1 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M455-4L15-1 | Cmp Products (a Division of British Engines Ltd) (GBR) |
| HT4024L4-15 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT4024L4-15 | 5/9 Secondary reference U.S. Government activity |
| HT4024L4-15 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| CHT4024-4-15 | 5/9 Secondary reference U.S. Government activity |
| HT4024L4-15 | 3/2 Design control — primary reference U.S. Government activity |
| HT4024L4-15 | 5/9 Secondary reference U.S. Government activity |
| ST3M455-4L15-1 | 5/9 Secondary reference The Boeing Company Div Defense |
| CHT4024-4-15 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| ST3M455-4L15-1 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-030-1768 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-030-1768 has 5 manufacturer part numbers on file: 11907-4L15-1 (Reid Products Inc. Dba Reid Products Inc), HT4024L4-15 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M455-4L15-1 (Sps Technologies Ltd, Tj Brooks Division), ST3M455-4L15-1 (Cmp Products (a Division of British Engines Ltd)), HT4024L4-15 (Hi-Shear Corporation).
Key specifications for HT4024L4-15: Fastener Length: 1.392 INCHES MINIMUM AND 1.422 INCHES MAXIMUM IN; Thread Length: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN; Material Document and Classification: 23-112,MCDONNEL DOUGLAS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.250 INCHES IN. 16 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.