The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-121-9360, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is H-K Connecticut Holding Company. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-121-9360 |
| Primary Part Number | EDP73028 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | H-K Connecticut Holding Company |
| Status | ACTIVE |
| Width Across Flats | 0.140 INCHES NOMINAL IN |
| Head Height | 0.164 INCHES NOMINAL IN |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | NICKEL OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.270 INCHES NOMINAL 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 |
|---|---|
| EDP73028 PRIMARY | H-K Connecticut Holding Company (USA) |
| 10488-031 | Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company (USA) |
| Reference | Meaning |
|---|---|
| 063912110-05REVA | 5/1 Secondary reference Diversified Aerospace Services, Llc Dba Lloyd Aircraft Company |
NSN 5305-01-121-9360 is a Screw,cap,socket Head, manufactured by H-K Connecticut Holding Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-121-9360 has 2 manufacturer part numbers on file: EDP73028 (H-K Connecticut Holding Company), 10488-031 (Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company).
Key specifications for EDP73028: Width Across Flats: 0.140 INCHES NOMINAL IN; Head Height: 0.164 INCHES NOMINAL IN; Fastener Length: 0.375 INCHES NOMINAL IN; Thread Length: 0.313 INCHES MINIMUM AND 0.375 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.