The Screw,tapping, cataloged under National Stock Number 5305-01-307-7900, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-307-7900 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.123 INCHES IN |
| Head Height | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Fastener Length | 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Nonmachine Thread Style | BLUNT (TYPE TT) |
| Head Style | PAN |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | CROSS RECESS TYPE II |
| Material | STEEL COMP 1022 OR STEEL COMP 1524 OVERALL |
| Head Diameter | 0.205 INCHES MINIMUM AND 0.219 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 |
|---|---|
| 721449 | 5/2 Secondary reference U.S. Government activity |
| 493957 | 5/9 Secondary reference U.S. Government activity |
| 721449 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5305-01-307-7900 is a Screw,tapping, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-307-7900: Nonmachine Nominal Thread Diameter: 0.123 INCHES IN; Head Height: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN; Fastener Length: 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN; Surface Treatment Document and Classification: ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 10 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.