The Screw,assembled Washer, cataloged under National Stock Number 5305-00-685-7660, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cessna Aircraft Co Arc Avionics Div. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-685-7660 |
| Primary Part Number | 508-3-8 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Cessna Aircraft Co Arc Avionics Div |
| Status | ACTIVE |
| Internal Drive Style | SLOT |
| Primary Washer Style | FLAT INTERNAL TEETH |
| Head Diameter | 0.335 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | PASSIVATE PRIMARY WASHER |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Height | 0.092 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Material | STEEL COMP 410 PRIMARY WASHER |
| Primary Washer Material Thickness | 0.042 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Length | 0.333 INCHES MINIMUM IN |
| Material | COPPER ALLOY 260 FASTENER |
| Washer Quantity | 1 |
| Head Style | BINDING |
| Surface Treatment | NICKEL FASTENER |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 32 |
| Primary Washer Outside Diameter | 0.335 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5305-00-685-7660 is a Screw,assembled Washer, manufactured by Cessna Aircraft Co Arc Avionics Div, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-685-7660 has 3 cross-referenced part numbers: 508-3-8 (Cessna Aircraft Co Arc Avionics Div), 508 3/8 (Cessna Aircraft Co Arc Avionics Div), 508-00240 (Cessna Aircraft Co Arc Avionics Div).
There are 3 known substitutes for 5305-00-685-7660: 5310-00-523-2004, 5940-01-486-0829, 6640-01-707-4081. Verify interchangeability with system specifications before substitution.
Key specifications for 508-3-8: Internal Drive Style: SLOT; Primary Washer Style: FLAT INTERNAL TEETH; Head Diameter: 0.335 INCHES NOMINAL IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 19 total characteristics are documented in the Federal Logistics Information System.