The Screw,shoulder, cataloged under National Stock Number 5305-01-673-0067, 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 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-673-0067 |
| Primary Part Number | 90298A728 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Head Height | 0.3125 INCHES NOMINAL IN |
| Fastener Length | 4.620 INCHES MINIMUM AND 4.630 INCHES MAXIMUM IN |
| Shoulder Length | 3.995 INCHES MINIMUM AND 4.005 INCHES MAXIMUM OVERALL IN |
| Shoulder Diameter | 0.500 INCHES NOMINAL OVERALL IN |
| Thread Length | 0.625 INCHES NOMINAL IN |
| Shoulder Shape | ROUND OVERALL |
| Nominal Thread Diameter | 0.125 INCHES IN |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.750 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 |
|---|---|
| 90298A728 | Mcmaster-Carr Supply Co (USA) |
| 90298A728 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 73211 | 3/2 Design control — primary reference U.S. Government activity |
| 13669770 ITEM 12 | 5/1 Secondary reference Us Army Aviation and Missile Command |
NSN 5305-01-673-0067 is a Screw,shoulder, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-673-0067 has 2 manufacturer part numbers on file: 90298A728 (Mcmaster-Carr Supply Co), 90298A728 (Mcmaster-Carr Supply Co).
Key specifications for 90298A728: Width Across Flats: 0.250 INCHES NOMINAL IN; Head Height: 0.3125 INCHES NOMINAL IN; Fastener Length: 4.620 INCHES MINIMUM AND 4.630 INCHES MAXIMUM IN; Shoulder Length: 3.995 INCHES MINIMUM AND 4.005 INCHES MAXIMUM OVERALL 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.