The Screw,shoulder, cataloged under National Stock Number 5305-01-290-2704, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-01-290-2704 |
| Primary Part Number | 4440 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | CANCELLED |
| Shoulder Diameter | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.438 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 20 |
| Internal Drive Style | HEXAGON |
| Shoulder Length | 0.5005 INCHES MINIMUM AND 0.5025 INCHES MAXIMUM FIRST SHOULDER IN |
| Material | STEEL COMP 303 OVERALL |
| Thread Direction | RIGHT-HAND |
| Width Across Flats | 0.156 INCHES NOMINAL IN |
| Head Diameter | 0.500 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Height | 0.219 INCHES NOMINAL IN |
| Fastener Length | 0.938 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 5305-01-290-2704 is a Screw,shoulder, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-01-290-2704 has 4 cross-referenced part numbers: PZ31-3 (W. M. Berg, Inc.), 4440 (Roller Bearing Co of America, Inc Div Pic Design), 5498252-3 (Naval Sea Systems Command), 5498251-3 (Zf Industrieantriebe Witten Gmbh).
There are 12 known substitutes for 5305-01-290-2704: 6810-00-222-2639, 7810-00-241-3357, 1660-00-253-5976 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4440: Shoulder Diameter: 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.438 INCHES NOMINAL IN; Thread Quantity Per Inch: 20; Internal Drive Style: HEXAGON. 16 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-01-290-2704 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.