The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-334-1047, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Metric and Multistandard Components Corp. Government technical data includes 13 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 | 5305-01-334-1047 |
| Primary Part Number | 7991STM3X20 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Metric and Multistandard Components Corp |
| Status | ACTIVE |
| Width Across Flats | 2.0 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 20.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 0.5 |
| Thread Length | 19.0 MILLIMETERS MINIMUM AND 20.0 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 3.0 MILLIMETERS MM |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 90.0 DEGREES NOMINAL |
| Material | STEEL COMP 304 OVERALL |
| Thread Series Designator | M |
| Head Diameter | 6.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 7991STM3X20 PRIMARY | Metric and Multistandard Components Corp (USA) |
NSN 5305-01-334-1047 is a Screw,cap,socket Head, manufactured by Metric and Multistandard Components Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-334-1047 has 1 manufacturer part number on file: 7991STM3X20 (Metric and Multistandard Components Corp).
Key specifications for 7991STM3X20: Width Across Flats: 2.0 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6G G; Fastener Length: 20.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 0.5. 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.