The Screw,close Tolerance, cataloged under National Stock Number 5305-00-522-9607, 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-522-9607 |
| Primary Part Number | HT4025L3D16 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Fastener Length | 1.391 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN |
| Thread Length | 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 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 CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.270 INCHES MINIMUM AND 1.310 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.376 INCHES MINIMUM AND 0.385 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 |
|---|---|
| HT4025L3D16 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M454-3DL16 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M454-3DL16 | West Coast Aerospace, Inc. (USA) |
| HT4025L3D16 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4025L3D16 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M454-3DL16 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 11905-3DL16 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4025L3D16 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M454-3DL16 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4025L3D16 | 5/9 Secondary reference Sps Technologies Inc |
| HT4025L3D16 | 5/9 Secondary reference U.S. Government activity |
| HT4025L3D16 | 3/2 Design control — primary reference U.S. Government activity |
| HT4025L3D16 | 5/9 Secondary reference U.S. Government activity |
| HT4025L3D16 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5305-00-522-9607 is a Screw,close Tolerance, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-522-9607 has 7 manufacturer part numbers on file: HT4025L3D16 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M454-3DL16 (Sps Technologies Ltd, Tj Brooks Division), ST3M454-3DL16 (West Coast Aerospace, Inc.), HT4025L3D16 (Howmet Global Fastening Systems Inc), HT4025L3D16 (Hi-Shear Corporation) and 2 more.
Key specifications for HT4025L3D16: Fastener Length: 1.391 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN; Thread Length: 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FIRST HOLE IN; Nominal Thread Diameter: 0.190 INCHES IN. 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.