The Screw,close Tolerance, cataloged under National Stock Number 5305-01-507-9664, 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 19 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-507-9664 |
| Primary Part Number | HT4054-4DL19 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Fastener Length | 1.613 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-83488, TYPE II CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM 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 | 28 |
| Material | STEEL COMP 8740 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN |
| Head Diameter | 0.464 INCHES MINIMUM 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 |
|---|---|
| HT4054-4DL19 | West Coast Aerospace, Inc. (USA) |
| HT4054-4DL19 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4054-4DL19 | Houston Precision Fasteners I Lp (USA) |
| ST3M730-4DL19 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4054-4DL19 | Apex Engineering Products Corp (USA) |
| HT4054-4DL19 PRIMARY | Hi-Shear Corporation (USA) |
| HT4054-4DL19 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4054-4DL19 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M730-4DL19 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4054-4DL19 | 5/2 Secondary reference U.S. Government activity |
| HT4054-4DL19 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-507-9664 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-507-9664 has 8 manufacturer part numbers on file: HT4054-4DL19 (West Coast Aerospace, Inc.), HT4054-4DL19 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4054-4DL19 (Houston Precision Fasteners I Lp), ST3M730-4DL19 (Fastener Innovation Technology, Inc. Dba F I T), HT4054-4DL19 (Apex Engineering Products Corp) and 3 more.
Key specifications for HT4054-4DL19: Fastener Length: 1.613 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-83488, TYPE II CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.425 INCHES NOMINAL IN; Material Document and Classification: MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 19 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.