In the world of precision engineering, especially within aviation, the function of every component is meticulously defined. Today, we are focusing on a vital piece of hardware identified under the part details: the RIGID CONNECTING LINK, specifically referencing the item with NSN 3040-01-499-5085.

What is a Rigid Connecting Link?

This component is essentially a mechanical linkage designed to transmit motion or force between different parts of a system. The description specifies that it is an item of various cross-sectional shapes, potentially solid or hollow, and its primary role is the attachment to one or more levers or controls to actuate remote mechanisms. Think of it as the critical intermediary ensuring that an input command results in the correct mechanical output elsewhere.

Construction Varieties

The definition allows for several structural configurations, illustrating its adaptability in various designs:

• Type 1: A single piece that might feature eyes or holes at each end, possibly housing bushings or bearings for smooth articulation.
• Type 2: A one-piece item where both ends are specially processed for terminations, but notably excludes threaded ends.
• Type 3: A two-piece design comprising a main body with processed ends and a separate, single end attachment.
• Type 4: A three-piece construction featuring a body and two distinct end attachments.

Exclusions and Context

It is important to note what this part is not. The classification specifically excludes several common linkage types, such as internal combustion engine piston connecting rods, steering drag links, brake shoe anchor links, steering tie rods, and turnbuckles. For simple, externally threaded cylindrical items without end attachments, reference should be made to ‘ROD, THREADED END’ or ‘STUD’.

Technical Specifications Spotlight

Digging into the technical data provided for NSN 3040-01-499-5085 reveals key physical attributes:

• Material: It is constructed from ALUMINUM ALLOY, referencing specification WW-T-700 TO 3 FED SPEC for material compliance.
• Body Construction: The body is specified as SOLID.
• Geometry: The link style is noted as 4 ANGLED.
• Dimensions: The body width ranges between a minimum of 0.425 inches and a maximum of 0.500 inches. Crucially, the overall rod length between the centers of the rod end holes is specified at 11.80 INCHES.

Application Insight

The designated end item application paints a clear picture of its high-stakes role: This specific link assembly is identified for the FWD FUSELAGE RUDDER CONTROL ROD ASSY; AIRCRAFT F-15. This confirms its use in the primary flight control system of the F-15 fighter jet, where reliability and precise articulation are paramount.

Manufacturer and Identification

This item has been supplied under the Supply Group (FSG) 30 and was officially assigned an NSN on July 25, 2002. Several part numbers are associated with this component, including 4500-261. Manufacturing references point to TYEE AIRCRAFT INCDBA DIVISION OF AVTECHTYEE, INC., identified by Cage Code 34742, as a supplier for related part numbers like 4500-261 and 4500.

In summary, the Rigid Connecting Link 3040-01-499-5085 is a precisely engineered, solid aluminum alloy rod crucial for transmitting rudder control inputs within the F-15 aircraft structure.