The Screw,close Tolerance, cataloged under National Stock Number 5305-01-148-2653, 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 17 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-148-2653 |
| Primary Part Number | HT4025L6-17 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Fastener Length | 1.688 INCHES MINIMUM AND 1.718 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.616 INCHES MINIMUM AND 0.666 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 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 | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.752 INCHES MINIMUM AND 0.762 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 |
|---|---|
| HT4025L6-17 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4025L6-17 PRIMARY | Huck International, Inc (USA) |
| HT4025L6-17 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M454-6L17 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M454-6L17 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4025L6-17 PRIMARY | Hi-Shear Corporation (USA) |
| 11905-6L17 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M454-6L17 | 5/9 Secondary reference Sps Technologies Inc |
| 10115448 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HT4025L6-17 | 3/2 Design control — primary reference U.S. Government activity |
| HT4025L6-17 | 5/9 Secondary reference U.S. Government activity |
| HT4025L6-17 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-148-2653 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-148-2653 has 7 manufacturer part numbers on file: HT4025L6-17 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4025L6-17 (Huck International, Inc), HT4025L6-17 (Howmet Global Fastening Systems Inc), ST3M454-6L17 (The Boeing Company Div Defense), ST3M454-6L17 (Sps Technologies Ltd, Tj Brooks Division) and 2 more.
Key specifications for HT4025L6-17: Fastener Length: 1.688 INCHES MINIMUM AND 1.718 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.616 INCHES MINIMUM AND 0.666 INCHES MAXIMUM IN; Material Document and Classification: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.