The Screw,shoulder, cataloged under National Stock Number 5305-01-260-9342, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-260-9342 |
| Primary Part Number | HT4020-5-10Y |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.082 INCHES MINIMUM AND 0.084 INCHES MAXIMUM IN |
| Fastener Length | 1.140 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN |
| Shoulder Length | 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM ALL SHOULDERS IN |
| Shoulder Diameter | 0.342 INCHES MINIMUM AND 0.343 INCHES MAXIMUM ALL SHOULDERS IN |
| Thread Length | 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND OVERALL |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 7110 POUNDS PER SQUARE INCH LBS |
| 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 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.575 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 |
|---|---|
| HT4020-5-10Y | Huck International, Inc (USA) |
| HT4020-5-10Y PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4020-5-10Y | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4020-5-10Y | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT4020-5-10Y | 5/9 Secondary reference U.S. Government activity |
| HT4020-5-10Y | 5/9 Secondary reference U.S. Government activity |
| HT4020-5-10Y | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-260-9342 is a Screw,shoulder, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-260-9342 has 4 manufacturer part numbers on file: HT4020-5-10Y (Huck International, Inc), HT4020-5-10Y (Howmet Global Fastening Systems Inc), HT4020-5-10Y (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4020-5-10Y (Hi-Shear Corporation).
Key specifications for HT4020-5-10Y: Head Height: 0.082 INCHES MINIMUM AND 0.084 INCHES MAXIMUM IN; Fastener Length: 1.140 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN; Shoulder Length: 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM ALL SHOULDERS IN; Shoulder Diameter: 0.342 INCHES MINIMUM AND 0.343 INCHES MAXIMUM ALL SHOULDERS IN. 19 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.