The Screw,tapping, cataloged under National Stock Number 5305-01-628-9579, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-628-9579 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.250 INCHES IN |
| Head Height | 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Fastener Length | 1.953 INCHES MINIMUM AND 2.047 INCHES MAXIMUM IN |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Head Style | PAN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Material | STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1524 OVERALL |
| Head Diameter | 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MS51861-73 | 5/9 Secondary reference Milcom Supply, Inc. Div Na |
| MS51861-73 | 5/9 Secondary reference U.S. Government activity |
| MS51861-73 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-628-9579 is a Screw,tapping, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-628-9579: Nonmachine Nominal Thread Diameter: 0.250 INCHES IN; Head Height: 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN; Fastener Length: 1.953 INCHES MINIMUM AND 2.047 INCHES MAXIMUM IN; Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA). 9 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.