The Screw,shoulder, cataloged under National Stock Number 5305-01-081-0750, 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 19 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-081-0750 |
| Primary Part Number | HT4016-4-13X |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.015 INCHES MAXIMUM IN |
| Fastener Length | 1.194 INCHES MINIMUM AND 1.224 INCHES MAXIMUM IN |
| Shoulder Length | 0.759 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.372 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FILLISTER COUNTERSUNK |
| 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 | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.3898 INCHES MINIMUM AND 0.3948 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 |
|---|---|
| 11911-4-13-1 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4016-4-13X PRIMARY | Huck International, Inc (USA) |
| HT4016-4-13X PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4016-4-13X PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M495-4-13-1 PRIMARY | The Boeing Company Div Defense (USA) |
| HT4016-4-13X PRIMARY | Hi-Shear Corporation (USA) |
| ST3M495-4-13-1 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M495-4-13-1 | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| ST3M495-4-13-1 | 5/9 Secondary reference Mecair Aerospace Industries,subsidiary of Spstechnologiesdiv Division of Sps Technologiesdba Mecair Inc. Div Division of Sps Technologies |
| HT4016-4-13X | 3/2 Design control — primary reference U.S. Government activity |
| HT4016-4-13X | 5/9 Secondary reference U.S. Government activity |
| ST3M495-4-13-1 | 5/9 Secondary reference U.S. Government activity |
| HT4016-4-13X | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-081-0750 is a Screw,shoulder, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-081-0750 has 8 manufacturer part numbers on file: 11911-4-13-1 (Reid Products Inc. Dba Reid Products Inc), HT4016-4-13X (Huck International, Inc), HT4016-4-13X (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4016-4-13X (Howmet Global Fastening Systems Inc), ST3M495-4-13-1 (The Boeing Company Div Defense) and 3 more.
Key specifications for HT4016-4-13X: Head Height: 0.015 INCHES MAXIMUM IN; Fastener Length: 1.194 INCHES MINIMUM AND 1.224 INCHES MAXIMUM IN; Shoulder Length: 0.759 INCHES NOMINAL 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.