The Screw,close Tolerance, cataloged under National Stock Number 5305-00-292-5488, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-292-5488 |
| Primary Part Number | HT42UA23 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Head Height | 0.058 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Fastener Length | 1.890 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN |
| Thread Length | 0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.428 INCHES MINIMUM AND 1.448 INCHES MAXIMUM IN |
| Grip Diameter | 0.2797 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM 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 | UNF |
| Head Diameter | 0.501 INCHES MINIMUM AND 0.506 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 |
|---|---|
| HT42UA23 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT42UA23 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 54268-4-23 | 5/9 Secondary reference Sps Technologies Inc Unbrako Div |
| 3M54-4-23 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT410A4-23 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-292-5488 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-292-5488 has 2 manufacturer part numbers on file: HT42UA23 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT42UA23 (Hi-Shear Corporation).
Key specifications for HT42UA23: Head Height: 0.058 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Fastener Length: 1.890 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN; Thread Length: 0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN; 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.