The Screw,shoulder, cataloged under National Stock Number 5305-01-596-3689, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 14 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 | 5305-01-596-3689 |
| Primary Part Number | 90298A877 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Width Across Flats | 0.500 INCHES NOMINAL IN |
| Head Height | 0.625 INCHES NOMINAL IN |
| Fastener Length | 3.495 INCHES MINIMUM AND 3.505 INCHES MAXIMUM IN |
| Shoulder Length | 2.495 INCHES MINIMUM AND 2.505 INCHES MAXIMUM OVERALL IN |
| Shoulder Diameter | 1.000 INCHES NOMINAL OVERALL IN |
| Thread Length | 1.000 INCHES NOMINAL IN |
| Shoulder Shape | ROUND OVERALL |
| Hardness Rating | 55.0 ROCKWELL B MINIMUM OVERALL |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Minimum Tensile Strength | 70000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Material | STEEL CORROSION RESISTING OVERALL |
| Head Diameter | 1.3125 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 |
|---|---|
| 90298A877 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5305-01-596-3689 is a Screw,shoulder, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-596-3689 has 1 manufacturer part number on file: 90298A877 (Mcmaster-Carr Supply Co).
Key specifications for 90298A877: Width Across Flats: 0.500 INCHES NOMINAL IN; Head Height: 0.625 INCHES NOMINAL IN; Fastener Length: 3.495 INCHES MINIMUM AND 3.505 INCHES MAXIMUM IN; Shoulder Length: 2.495 INCHES MINIMUM AND 2.505 INCHES MAXIMUM OVERALL IN. 14 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.