The Screw,shoulder, cataloged under National Stock Number 5305-01-440-6518, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-440-6518 |
| Primary Part Number | 5498251-1 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Fastener Length | 0.312 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 32 |
| Internal Drive Style | HEXAGON |
| Shoulder Length | 0.126 INCHES MINIMUM AND 0.128 INCHES MAXIMUM OVERALL IN |
| Shoulder Diameter | 0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM OVERALL IN |
| Width Across Flats | 0.094 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Material | STEEL COMP 303 OVERALL |
| Shoulder Shape | ROUND OVERALL |
| Thread Length | 0.187 INCHES NOMINAL IN |
| Head Style | FLAT CHAMFER |
| Thread Class | 2A A |
| Head Height | 0.156 INCHES NOMINAL IN |
| Head Diameter | 0.312 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 5498251-1 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5305-01-440-6518 is a Screw,shoulder, manufactured by Naval Sea Systems Command, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-440-6518 has 1 cross-referenced part number: 5498251-1 (Naval Sea Systems Command).
There is 1 known substitute for 5305-01-440-6518: 5305-01-064-5479. Verify interchangeability with system specifications before substitution.
Key specifications for 5498251-1: Thread Direction: RIGHT-HAND; Fastener Length: 0.312 INCHES NOMINAL IN; Thread Quantity Per Inch: 32; Internal Drive Style: HEXAGON. 16 total characteristics are documented in the Federal Logistics Information System.