The Screw,shoulder, cataloged under National Stock Number 5305-01-047-0369, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Houston Precision Fasteners I Lp. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 13 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-047-0369 |
| Primary Part Number | ST3M506-8-10 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Houston Precision Fasteners I Lp |
| Status | ACTIVE |
| Fastener Length | 1.258 INCHES MINIMUM AND 1.305 INCHES MAXIMUM IN |
| Shoulder Length | 0.506 INCHES MINIMUM AND 0.526 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.531 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.623 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.500 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 | 2O |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.720 INCHES MINIMUM AND 0.787 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 |
|---|---|
| ST3M506-8-10 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| ST3M506-8-10 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4011-8-10 PRIMARY | Hi-Shear Corporation (USA) |
| WC4011-8-10 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HT4011-8-10 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HT4011-8-10 PRIMARY | Huck International, Inc (USA) |
| HT4011-8-10 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4011-8-10 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4011-8-10 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 11919-8-10 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M506-8-10 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HT4011-8-10 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M506-8-10 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4011-8-10 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M506-8-10 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HT4011-8-10 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M506-8-10 | 5/9 Secondary reference U.S. Government activity |
| ST3M506-8-10 | 5/9 Secondary reference Huck International, Inc |
| ST3M506-8-10 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| ST3M506-8-10 | 5/9 Secondary reference Hi-Shear Corporation |
| ST3M506-8-10 | 5/9 Secondary reference U.S. Government activity |
| ST3M506-8-10 | 5/9 Secondary reference Sps Technologies Inc |
| ST3M506-8-10 | 5/9 Secondary reference Sps Technologies Ltd, Tj Brooks Division |
| ST3M506-8-10 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| ST3M506-8-10 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4011-8-10 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-047-0369 is a Screw,shoulder, manufactured by Houston Precision Fasteners I Lp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-047-0369 has 13 manufacturer part numbers on file: ST3M506-8-10 (Houston Precision Fasteners I Lp), ST3M506-8-10 (Fastener Innovation Technology, Inc. Dba F I T), HT4011-8-10 (Hi-Shear Corporation), WC4011-8-10 (West Coast Aerospace, Inc.), HT4011-8-10 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 8 more.
Key specifications for ST3M506-8-10: Fastener Length: 1.258 INCHES MINIMUM AND 1.305 INCHES MAXIMUM IN; Shoulder Length: 0.506 INCHES MINIMUM AND 0.526 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.531 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.623 INCHES MINIMUM AND 0.690 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.