The Screw,shoulder, cataloged under National Stock Number 5305-01-666-4182, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-666-4182 |
| Primary Part Number | 3975AS5170-1 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Fastener Length | 16.00 MILLIMETERS NOMINAL MM |
| Shoulder Length | 4.00 MILLIMETERS NOMINAL FIRST SHOULDER MM |
| Thread Length | 12.00 MILLIMETERS NOMINAL MM |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 16.00 MILLIMETERS NOMINAL MM |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | M |
| 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 |
|---|---|
| 3975AS5170-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5305-01-666-4182 is a Screw,shoulder, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-666-4182 has 1 manufacturer part number on file: 3975AS5170-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 3975AS5170-1: Fastener Length: 16.00 MILLIMETERS NOMINAL MM; Shoulder Length: 4.00 MILLIMETERS NOMINAL FIRST SHOULDER MM; Thread Length: 12.00 MILLIMETERS NOMINAL MM; Shoulder Shape: ROUND FIRST SHOULDER. 11 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.