The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-496-5993, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 10 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 | 5305-01-496-5993 |
| Primary Part Number | ISO4017-M20X90-10.9 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Head Height | 12.29 MILLIMETERS MINIMUM AND 12.72 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 89.3 MILLIMETERS MINIMUM AND 90.7 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 2.5 |
| Thread Length | 82.5 MILLIMETERS MINIMUM AND 87.5 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 20.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 29.67 MILLIMETERS MINIMUM AND 30.00 MILLIMETERS MAXIMUM MM |
| Thread Series Designator | M |
| 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 |
|---|---|
| ISO4017-M20X90-10.9 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 5305-01-496-5993 is a Screw,cap,hexagon Head, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-496-5993 has 1 manufacturer part number on file: ISO4017-M20X90-10.9 (Naval Inventory Control Point Mechanicsburg).
Key specifications for ISO4017-M20X90-10.9: Head Height: 12.29 MILLIMETERS MINIMUM AND 12.72 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 89.3 MILLIMETERS MINIMUM AND 90.7 MILLIMETERS MAXIMUM MM; Thread Pitch in Millimeters: 2.5. 10 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.