The Screw,shoulder, cataloged under National Stock Number 5305-01-047-0372, 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 15 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-047-0372 |
| Primary Part Number | HT4020-3-5AX |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Fastener Length | 0.703 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Shoulder Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.202 INCHES MINIMUM AND 0.203 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.381 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.376 INCHES MINIMUM AND 0.381 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 |
|---|---|
| ST3M653C3-5A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4020-3-5AX PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4020-3-5AX PRIMARY | Hi-Shear Corporation (USA) |
| ST3M653C3-5A | West Coast Aerospace, Inc. (USA) |
| ST3M653C3-5A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M653C3-5A | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M653C3-5A | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M653C3-5A | 5/2 Secondary reference U.S. Government activity |
| ST3M653C3-5A | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-047-0372 is a Screw,shoulder, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-047-0372 has 6 manufacturer part numbers on file: ST3M653C3-5A (Sps Technologies Ltd, Tj Brooks Division), HT4020-3-5AX (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4020-3-5AX (Hi-Shear Corporation), ST3M653C3-5A (West Coast Aerospace, Inc.), ST3M653C3-5A (Fastener Innovation Technology, Inc. Dba F I T) and 1 more.
Key specifications for HT4020-3-5AX: Fastener Length: 0.703 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Shoulder Length: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.202 INCHES MINIMUM AND 0.203 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.381 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN. 15 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.