The Screw,shoulder, cataloged under National Stock Number 5305-01-567-8073, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-567-8073 |
| Primary Part Number | ST3M496-7-20 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 1.849 INCHES NOMINAL IN |
| Shoulder Length | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.452 INCHES MINIMUM AND 0.453 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.599 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.437 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.880 INCHES MINIMUM AND 0.890 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 |
|---|---|
| HT4008-7-20 | Huck International, Inc (USA) |
| HT4008-7-20 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M496-7-20 | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| ST3M496-7-20 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4008-7-20 | Howmet Global Fastening Systems Inc (USA) |
| 11913-7-20 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4008-7-20 | Hi-Shear Corporation (USA) |
| WC4008-7-20 | West Coast Aerospace, Inc. (USA) |
| ST3M496-7-20 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| HT4008-7-20 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-567-8073 is a Screw,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-567-8073 has 9 manufacturer part numbers on file: HT4008-7-20 (Huck International, Inc), HT4008-7-20 (Sps Technologies Ltd, Tj Brooks Division), ST3M496-7-20 (M.s. Aerospace Inc. Dba Ms Aerospace Inc), ST3M496-7-20 (Fastener Innovation Technology, Inc. Dba F I T), HT4008-7-20 (Howmet Global Fastening Systems Inc) and 4 more.
Key specifications for ST3M496-7-20: Fastener Length: 1.849 INCHES NOMINAL IN; Shoulder Length: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.452 INCHES MINIMUM AND 0.453 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.599 INCHES NOMINAL 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.