The Screw,shoulder, cataloged under National Stock Number 5305-01-076-9406, 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 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-076-9406 |
| Primary Part Number | HT4020-5-7AX |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.082 INCHES MINIMUM AND 0.084 INCHES MAXIMUM IN |
| Fastener Length | 0.953 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Shoulder Length | 0.344 INCHES MINIMUM AND 0.366 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.3271 INCHES MINIMUM AND 0.3276 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS 5629 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 |
| 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 | 0.575 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 |
|---|---|
| HT4020-5-7AX PRIMARY | Hi-Shear Corporation (USA) |
| HT4020-5-7AX PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
NSN 5305-01-076-9406 is a Screw,shoulder, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-076-9406 has 2 manufacturer part numbers on file: HT4020-5-7AX (Hi-Shear Corporation), HT4020-5-7AX (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for HT4020-5-7AX: Head Height: 0.082 INCHES MINIMUM AND 0.084 INCHES MAXIMUM IN; Fastener Length: 0.953 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN; Shoulder Length: 0.344 INCHES MINIMUM AND 0.366 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.