The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-146-9891, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-146-9891 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 14.0 MILLIMETERS NOMINAL MM |
| Head Height | 16.0 MILLIMETERS NOMINAL MM |
| Fastener Length | 20.00 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 2.0 |
| Thread Length | 16.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 16.0 MILLIMETERS MM |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Minimum Tensile Strength | 170000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Material | STEEL OVERALL |
| Thread Series Designator | M |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY EXTRA LONG REFERENCE NUMBER |
| Head Diameter | 24.0 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 |
| Reference | Meaning |
|---|---|
| M16X20 DIN 912 | 5/9 Secondary reference Zelenda Machine and Tools Corp |
| M16X20DIN912STL GR 12.9 | 5/9 Secondary reference Zelenda Machine and Tools Corp |
| CC19439 | C/1 Advisory reference — outside the item-of-supply concept Deere & Company Dba Deere John Co |
| M16X20 DIN 912 ALLOY STEEL GRAD- | 3/1 Design control — primary reference Zelenda Machine and Tools Corp |
NSN 5305-01-146-9891 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-146-9891: Width Across Flats: 14.0 MILLIMETERS NOMINAL MM; Head Height: 16.0 MILLIMETERS NOMINAL MM; Fastener Length: 20.00 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 2.0. 15 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.