The Screw,shoulder, cataloged under National Stock Number 5305-01-340-7388, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 22 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 | 5305-01-340-7388 |
| Primary Part Number | 12591810 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Width Across Flats | 0.156 INCHES NOMINAL IN |
| Head Height | 0.220 INCHES NOMINAL IN |
| Fastener Length | 1.360 INCHES NOMINAL IN |
| Shoulder Length | 0.075 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Length | 0.090 INCHES NOMINAL THIRD SHOULDER IN |
| Shoulder Length | 0.420 INCHES NOMINAL FOURTH SHOULDER IN |
| Shoulder Length | 0.775 INCHES NOMINAL SECOND SHOULDER IN |
| Shoulder Diameter | 0.175 INCHES NOMINAL THIRD SHOULDER IN |
| Shoulder Diameter | 0.250 INCHES NOMINAL FOURTH SHOULDER IN |
| Shoulder Diameter | 0.258 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.3105 INCHES NOMINAL SECOND SHOULDER IN |
| Thread Length | 0.420 INCHES NOMINAL IN |
| Shoulder Shape | ROUND OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLUSH |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.439 INCHES NOMINAL 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 |
|---|---|
| 12591810 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 5305-01-340-7388 is a Screw,shoulder, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-340-7388 has 1 manufacturer part number on file: 12591810 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 12591810: Width Across Flats: 0.156 INCHES NOMINAL IN; Head Height: 0.220 INCHES NOMINAL IN; Fastener Length: 1.360 INCHES NOMINAL IN; Shoulder Length: 0.075 INCHES NOMINAL FIRST SHOULDER IN. 22 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.