The Screw,self-Drilling, cataloged under National Stock Number 5305-01-646-0438, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-646-0438 |
| Primary Part Number | 31810 |
| Item Name | Screw,self-Drilling |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastenal Company Dba Fastenal Co |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.190 INCHES0.190 INCHES IN |
| Fastener Length | 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN |
| Nonmachine Thread Style | WIDE FLUTE (TYPE H OR BT)WIDE FLUTE (TYPE H OR BT) |
| Head Style | HEXAGON EXTENDED WASHERHEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Width Between Flats | 0.312 INCHES NOMINAL0.312 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Thread Quantity Per Inch | 1616 |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 31810 PRIMARY | Fastenal Company Dba Fastenal Co (USA) |
NSN 5305-01-646-0438 is a Screw,self-Drilling, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-646-0438 has 1 manufacturer part number on file: 31810 (Fastenal Company Dba Fastenal Co).
Key specifications for 31810: Nonmachine Nominal Thread Diameter: 0.190 INCHES0.190 INCHES IN; Fastener Length: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN; Nonmachine Thread Style: WIDE FLUTE (TYPE H OR BT)WIDE FLUTE (TYPE H OR BT); Head Style: HEXAGON EXTENDED WASHERHEXAGON EXTENDED WASHER. 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.