The Screw,shoulder, cataloged under National Stock Number 5305-01-031-5365, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-031-5365 |
| Primary Part Number | ST3M495-3-4-1 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Head Height | 0.013 INCHES MAXIMUM IN |
| Fastener Length | 0.566 INCHES MINIMUM AND 0.596 INCHES MAXIMUM IN |
| Shoulder Length | 0.195 INCHES MINIMUM AND 0.224 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.202 INCHES MINIMUM AND 0.203 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.306 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FILLISTER COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 301 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.2966 INCHES MINIMUM AND 0.3016 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 |
|---|---|
| ST3M495-3-4-1 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| WC4010-3-4 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HT4016-3-4X PRIMARY | Huck International, Inc (USA) |
| HT4016-3-4X PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4016-3-4X PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4016-3-4X | Satair A/s (DNK) |
| HT4016-3-4X | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| HT4016-3-4X PRIMARY | Hi-Shear Corporation (USA) |
| 11911-3-4-1 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4016-3-4X | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4016-3-4X | 5/9 Secondary reference U.S. Government activity |
| HT4016-3-4X | 5/9 Secondary reference U.S. Government activity |
| HT4016-3-4X | 3/2 Design control — primary reference U.S. Government activity |
| 10114877 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST3M495-3-4-1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5305-01-031-5365 is a Screw,shoulder, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-031-5365 has 9 manufacturer part numbers on file: ST3M495-3-4-1 (Fastener Innovation Technology, Inc. Dba F I T), WC4010-3-4 (West Coast Aerospace, Inc.), HT4016-3-4X (Huck International, Inc), HT4016-3-4X (Howmet Global Fastening Systems Inc), HT4016-3-4X (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 4 more.
Key specifications for ST3M495-3-4-1: Head Height: 0.013 INCHES MAXIMUM IN; Fastener Length: 0.566 INCHES MINIMUM AND 0.596 INCHES MAXIMUM IN; Shoulder Length: 0.195 INCHES MINIMUM AND 0.224 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.202 INCHES MINIMUM AND 0.203 INCHES MAXIMUM FIRST SHOULDER 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.