The Screw,close Tolerance, cataloged under National Stock Number 5305-01-266-5358, 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 21 specifications, cited from the U.S. Government catalog. The record lists 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-266-5358 |
| Primary Part Number | HT4024L-3D25 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Fastener Length | 1.953 INCHES MINIMUM AND 1.984 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.391 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 UNS S13800 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Features Provided | CETYL ALCOHOL LUBRICANT AND FINISHED HEAD |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-455 MANUFACTURERS STANDARD AND 73197-HT4024L MANUFACTURERS STANDARD |
| Grip Length | 1.552 INCHES MINIMUM AND 1.572 INCHES MAXIMUM IN |
| Grip Diameter | 0.189 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.842 INCHES MINIMUM AND 1.863 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.297 INCHES MINIMUM AND 0.302 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 |
|---|---|
| HT4024L-3D25 | Howmet Global Fastening Systems Inc (USA) |
| HT4024L-3D25 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4024L-3DL25-1 | Hi-Shear Corporation (USA) |
| HT4024L-3DL25-1 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4024L-3D25 PRIMARY | Hi-Shear Corporation (USA) |
| 11907-3DL25-1 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M455-3DL25-1 PRIMARY | The Boeing Company Div Defense (USA) |
| HT4024L-3D25 PRIMARY | Huck International, Inc (USA) |
| HT4024L-3D25 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| Reference | Meaning |
|---|---|
| HT4024L-3D25 | 5/9 Secondary reference U.S. Government activity |
| HT4024L-3D25 | 5/2 Secondary reference U.S. Government activity |
| HT4024L-3D25 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-266-5358 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-266-5358 has 9 manufacturer part numbers on file: HT4024L-3D25 (Howmet Global Fastening Systems Inc), HT4024L-3D25 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4024L-3DL25-1 (Hi-Shear Corporation), HT4024L-3DL25-1 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4024L-3D25 (Hi-Shear Corporation) and 4 more.
Key specifications for HT4024L-3D25: Fastener Length: 1.953 INCHES MINIMUM AND 1.984 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.391 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FIRST HOLE IN. 21 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.