The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-042-4415, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-042-4415 |
| Primary Part Number | GS550E3S7 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Extended Washer Thickness | 0.025 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN |
| Head Height | 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN |
| Fastener Length | 0.407 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN |
| Thread Length | 0.329 INCHES MINIMUM AND 0.423 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | ROUND EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH THREADS |
| Surface Treatment | CADMIUM OR CADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE OR ZINC OR ZINC AND CHROMATE OR ZINC AND PHOSPHATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4037 OR STEEL COMP 8630 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| 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 |
|---|---|
| GS550E3S7 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| GS550E3S7 | 5/9 Secondary reference Wade Enterprises |
NSN 5305-01-042-4415 is a Screw,cap,socket Head, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-042-4415 has 1 manufacturer part number on file: GS550E3S7 (Northrop Grumman Systems Corporation).
Key specifications for GS550E3S7: Extended Washer Thickness: 0.025 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN; Head Height: 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN; Fastener Length: 0.407 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN; Extended Washer Diameter: 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN. 17 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.