The Screw,shoulder, cataloged under National Stock Number 5305-01-142-9914, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-142-9914 |
| Primary Part Number | HT4009-5-19 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 1.640 INCHES MINIMUM AND 1.670 INCHES MAXIMUM IN |
| Shoulder Length | 1.058 INCHES MINIMUM AND 1.078 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.442 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| 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 | 0.625 INCHES MINIMUM AND 0.635 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 |
|---|---|
| HT4009-5-19 PRIMARY | Hi-Shear Corporation (USA) |
| HT4009-5-19 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M505-5-19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M505-5-19 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| HT4009-5-19 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HT4009-5-19 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| HT4009-5-19 | 5/9 Secondary reference U.S. Government activity |
| ST3M505-5-19 | 5/2 Secondary reference U.S. Government activity |
| HT4009-5-19 | 5/9 Secondary reference U.S. Government activity |
| HT4009-5-19 | 3/2 Design control — primary reference U.S. Government activity |
| HT4009-5-19 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5305-01-142-9914 is a Screw,shoulder, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-142-9914 has 4 manufacturer part numbers on file: HT4009-5-19 (Hi-Shear Corporation), HT4009-5-19 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M505-5-19 (Sps Technologies, Llc Dba PB Fasteners), ST3M505-5-19 (The Boeing Company Div Defense).
Key specifications for HT4009-5-19: Fastener Length: 1.640 INCHES MINIMUM AND 1.670 INCHES MAXIMUM IN; Shoulder Length: 1.058 INCHES MINIMUM AND 1.078 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.442 INCHES MINIMUM AND 0.492 INCHES MAXIMUM 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.