The Screw,shoulder, cataloged under National Stock Number 5305-01-142-7219, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-142-7219 |
| Primary Part Number | HT4020-6-15AY |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.1017 INCHES MINIMUM AND 0.1037 INCHES MAXIMUM IN |
| Fastener Length | 1.562 INCHES MINIMUM AND 1.609 INCHES MAXIMUM IN |
| Shoulder Length | 0.824 INCHES MINIMUM AND 0.846 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.4052 INCHES MINIMUM AND 0.4057 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.614 INCHES MINIMUM AND 0.681 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| 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 | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.756 INCHES MINIMUM AND 0.760 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 |
|---|---|
| HT4020-6-15AY | Hi-Shear Corporation (USA) |
| HT4020-6-15AY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4020-6-15AY PRIMARY | Huck International, Inc (USA) |
| 11879C6-15A | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4020-6-15AY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4020-6-15AY | 5/9 Secondary reference U.S. Government activity |
| HT4020-6-15AY | 5/9 Secondary reference U.S. Government activity |
| 3M902C6-15A | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 3M902C6-15A | 5/2 Secondary reference U.S. Government activity |
| HT4020-6-15AY | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-142-7219 is a Screw,shoulder, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-142-7219 has 5 manufacturer part numbers on file: HT4020-6-15AY (Hi-Shear Corporation), HT4020-6-15AY (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4020-6-15AY (Huck International, Inc), 11879C6-15A (Reid Products Inc. Dba Reid Products Inc), HT4020-6-15AY (Howmet Global Fastening Systems Inc).
Key specifications for HT4020-6-15AY: Head Height: 0.1017 INCHES MINIMUM AND 0.1037 INCHES MAXIMUM IN; Fastener Length: 1.562 INCHES MINIMUM AND 1.609 INCHES MAXIMUM IN; Shoulder Length: 0.824 INCHES MINIMUM AND 0.846 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.4052 INCHES MINIMUM AND 0.4057 INCHES MAXIMUM FIRST SHOULDER IN. 18 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.