The Screw,tapping, cataloged under National Stock Number 5305-01-028-4831, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-028-4831 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.138 INCHES IN |
| Head Height | 0.048 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN |
| Fastener Length | 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Material Document and Classification | AISI ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Features Provided | CASEHARDENED |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Nondefinitive Spec/std Data | AB TYPE |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 81.0 DEGREES NOMINAL |
| Material | STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1022 OR STEEL COMP 1019 OR STEEL COMP 1524 OVERALL |
| Head Diameter | 0.244 INCHES MINIMUM AND 0.279 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 |
|---|---|
| MS51862-12 | 2/2 Government specification standardization U.S. Government activity |
| FF-S-107 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-028-4831 is a Screw,tapping, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-028-4831: Nonmachine Nominal Thread Diameter: 0.138 INCHES IN; Head Height: 0.048 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN; Fastener Length: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL. 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.