The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-550-2428, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 18 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 | 5305-01-550-2428 |
| Primary Part Number | 725016A2637-2 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Head Height | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Fastener Length | 1.380 INCHES NOMINAL IN |
| Thread Length | 0.580 INCHES NOMINAL IN |
| First Diameter From Head | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Point Style | POINTLESS |
| Width Between Flats | 0.303 INCHES MINIMUM AND 0.486 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.800 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 2910 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 725016A2637-2 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
NSN 5305-01-550-2428 is a Screw,externally Relieved Body, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-550-2428 has 1 manufacturer part number on file: 725016A2637-2 (Lockheed Martin Corporation Div Rms).
Key specifications for 725016A2637-2: Head Height: 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Fastener Length: 1.380 INCHES NOMINAL IN; Thread Length: 0.580 INCHES NOMINAL IN; First Diameter From Head: 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN. 18 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.