The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-591-5757, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Safety Socket Llc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-591-5757 |
| Primary Part Number | 45057 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Safety Socket Llc |
| Status | ACTIVE |
| Head Diameter | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Thread Length | 0.675 INCHES NOMINAL IN |
| Fastener Length | 0.675 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Internal Drive Style | HEXAGON |
| Thread Quantity Per Inch | 28 |
| Head Style | PAN NO. 2 |
| Width Across Flats | 0.188 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3A A |
| Head Height | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Thread Series Designator | UNRF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 45057 PRIMARY | Safety Socket Llc (USA) |
NSN 5305-01-591-5757 is a Screw,cap,socket Head, manufactured by Safety Socket Llc, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-591-5757 has 1 cross-referenced part number: 45057 (Safety Socket Llc).
There are 4 known substitutes for 5305-01-591-5757: 2810-00-165-6034, 5905-00-501-9667, 2540-01-525-0941 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 45057: Head Diameter: 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Thread Length: 0.675 INCHES NOMINAL IN; Fastener Length: 0.675 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 15 total characteristics are documented in the Federal Logistics Information System.