The Screw,tapping, cataloged under National Stock Number 5305-01-381-2186, 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9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-381-2186 |
| 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 | 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Nonmachine Thread Style | THRU SLOT (TYPE D) |
| Head Style | PAN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385 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 |
|---|---|
| FF-S-107 | 4/1 Identification reference U.S. Government activity |
| MS24630-74 | 5/9 Secondary reference U.S. Government activity |
| MS24630-74 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-381-2186 is a Screw,tapping, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-381-2186: Nonmachine Nominal Thread Diameter: 0.250 INCHES IN; Head Height: 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN; Fastener Length: 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Nonmachine Thread Style: THRU SLOT (TYPE D). 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.