The Screw,shoulder, cataloged under National Stock Number 5305-01-143-2832, 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 16 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-143-2832 |
| Primary Part Number | HT4016-3-18Y |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Fastener Length | 1.441 INCHES MINIMUM AND 1.471 INCHES MAXIMUM IN |
| Shoulder Length | 1.065 INCHES MINIMUM AND 1.093 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.306 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.3275 INCHES MINIMUM AND 0.3325 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 |
|---|---|
| HT4016-3-18Y PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M506-3-18-1 | West Coast Aerospace, Inc. (USA) |
| ST3M506-3-18-1 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4016-3-18Y PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4016-3-18Y PRIMARY | Huck International, Inc (USA) |
| HT4016-3-18Y PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT4016-3-18Y | 5/9 Secondary reference U.S. Government activity |
| HT4016-3-18Y | 3/2 Design control — primary reference U.S. Government activity |
| ST3M506-3-18-1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4016-3-18Y | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HT4016-3-18Y | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-143-2832 is a Screw,shoulder, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-143-2832 has 6 manufacturer part numbers on file: HT4016-3-18Y (Howmet Global Fastening Systems Inc), ST3M506-3-18-1 (West Coast Aerospace, Inc.), ST3M506-3-18-1 (Fastener Innovation Technology, Inc. Dba F I T), HT4016-3-18Y (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4016-3-18Y (Huck International, Inc) and 1 more.
Key specifications for HT4016-3-18Y: Fastener Length: 1.441 INCHES MINIMUM AND 1.471 INCHES MAXIMUM IN; Shoulder Length: 1.065 INCHES MINIMUM AND 1.093 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.306 INCHES MINIMUM AND 0.356 INCHES MAXIMUM 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.