The Screw,shoulder, cataloged under National Stock Number 5305-01-375-2857, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-375-2857 |
| Primary Part Number | 5597762-2 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 1.000 INCHES NOMINAL IN |
| Fastener Length | 11.890 INCHES NOMINAL IN |
| Shoulder Length | 3.940 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.812 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 5.780 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | MIL-S-5626 COND D-1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 5.000 INCHES IN |
| Features Provided | CETYL ALCOHOL LUBRICANT |
| Head Style | SPADE |
| Thread Direction | RIGHT-HAND |
| Head Length | 0.812 INCHES NOMINAL IN |
| Width Between Flats | 0.229 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORQUE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5305-01-375-2857 is a Screw,shoulder, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-375-2857 has 2 manufacturer part numbers on file: 5597762-2 (Naval Sea Systems Command), 5597762-2 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 5597762-2: Head Height: 1.000 INCHES NOMINAL IN; Fastener Length: 11.890 INCHES NOMINAL IN; Shoulder Length: 3.940 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.812 INCHES NOMINAL FIRST SHOULDER IN. 20 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.