The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-431-9986, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Din Deutsches Institut Fur Normung Ev. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-431-9986 |
| Primary Part Number | DIN7991-M6X12-8.8 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Din Deutsches Institut Fur Normung Ev |
| Status | ACTIVE |
| Width Across Flats | 4.02 MILLIMETERS MINIMUM AND 4.12 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 12.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.0 |
| Thread Length | 18.0 MILLIMETERS MINIMUM MM |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 90.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM |
| Material | STEEL PROPERTY CLASS 8.8 OVERALL |
| Thread Series Designator | M |
| Head Diameter | 11.57 MILLIMETERS MINIMUM AND 12.00 MILLIMETERS MAXIMUM 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 |
|---|---|
| DIN7991-M6X12-8.8 | Din Deutsches Institut Fur Normung Ev (DEU) |
| Reference | Meaning |
|---|---|
| M6X12 DIN7991 M8,8 | 5/9 Secondary reference Hamworthy Kse Ab |
| M6X12 DIN7991 M8,8 | 5/9 Secondary reference Tts Marine Ab Formerly Tts Ships Equipment Ab Div Dry Cargo Handling |
| DIN7991-M6X12-8.8 | 3/9 Design control — primary reference Zelenda Machine and Tools Corp |
NSN 5305-01-431-9986 is a Screw,cap,socket Head, manufactured by Din Deutsches Institut Fur Normung Ev, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-431-9986 has 1 manufacturer part number on file: DIN7991-M6X12-8.8 (Din Deutsches Institut Fur Normung Ev).
Key specifications for DIN7991-M6X12-8.8: Width Across Flats: 4.02 MILLIMETERS MINIMUM AND 4.12 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 12.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.0. 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.