The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-307-4376, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-307-4376 |
| Primary Part Number | DIN7991M10X1.25X40-STL 10.9-B3B |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Din Deutsches Institut Fur Normung Ev |
| Status | ACTIVE |
| Width Across Flats | 6.0 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 6H |
| Fastener Length | 34.5 MILLIMETERS MINIMUM AND 40.0 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 1.25 |
| Thread Length | 32.0 MILLIMETERS MINIMUM AND 40.0 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 10.0 MILLIMETERS MM |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 90.0 DEGREES NOMINAL |
| Material | STEEL PROPERTY CLASS 10.9 OVERALL |
| Thread Series Designator | M |
| Head Diameter | 20.0 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 |
|---|---|
| DIN7991M10X1.25X40-STL 10.9-B3B | Din Deutsches Institut Fur Normung Ev (DEU) |
| Reference | Meaning |
|---|---|
| DIN7991M10X1.25X40-STL 10.9-B3B | 3/9 Design control — primary reference Zelenda Machine and Tools Corp |
NSN 5305-01-307-4376 is a Screw,cap,socket Head, manufactured by Din Deutsches Institut Fur Normung Ev, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-307-4376 has 1 manufacturer part number on file: DIN7991M10X1.25X40-STL 10.9-B3B (Din Deutsches Institut Fur Normung Ev).
Key specifications for DIN7991M10X1.25X40-STL 10.9-B3B: Width Across Flats: 6.0 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6H; Fastener Length: 34.5 MILLIMETERS MINIMUM AND 40.0 MILLIMETERS MAXIMUM MM; Thread Pitch in Millimeters: 1.25. 14 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.