The Screw,tapping, cataloged under National Stock Number 5305-01-242-6987, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-242-6987 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.250 INCHES IN |
| Extended Washer Thickness | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Head Height | 0.202 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN |
| Fastener Length | 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Nonmachine Thread Style | BLUNT (SF) OR BLUNT (TYPE SW) OR BLUNT (TYPE TT) |
| Head Style | HEXAGON EXTENDED WASHER |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | SF TYPE OR SW TYPE OR TT TYPE |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Material | STEEL COMP 410 OVERALL |
| 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 |
|---|---|
| MS51869-C23 | 2/2 Government specification standardization U.S. Government activity |
| FF-S-107 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-242-6987 is a Screw,tapping, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-242-6987: Nonmachine Nominal Thread Diameter: 0.250 INCHES IN; Extended Washer Thickness: 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN; Head Height: 0.202 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN; Fastener Length: 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN. 13 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.