Swiss Turned Threaded Fasteners

Detailed Description

Standard fasteners rarely account for a miniature mechanism with unusual spacing, limited tool access or a built-in axial stop. Custom machined fasteners combine thread engagement and a shaped shaft in one compact part. Reduced diameters, shoulders and small drive details occupy the areas where a conventional screw leaves unnecessary length or bulk.

Swiss turning forms threads and stepped profiles directly from bar stock. Shouldered regions seat against the joined component while the threaded section secures the connection. Flats, slots or a small cross hole provide an additional way to handle or retain the piece.

Compact assemblies also use threaded standoffs with short unthreaded sections to maintain separation between joined pieces. Reduced head profiles fit near surrounding hardware, while a flat or slot keeps the tool engagement accessible within a narrow opening.

Fastening And Axial Location In One Turned Piece

Miniature shoulder screws illustrate the distinction between locating and clamping. Unthreaded shoulders support moving links or define spacing, while threads at the end secure the fastener. Compact heads and drive features preserve access inside the mechanism.

Available Surface Finishes

• Zinc Plating: Common corrosion-protection finish for carbon steel fasteners.
• Nickel Plating: Adds surface protection to brass and steel components.
• Passivation: Suitable for stainless steel fastening components.
• Black Oxide: Provides a dark protective finish for steel fasteners.

Black oxide produces a dark finish on suitable steel parts. Passivated stainless fasteners and plated brass versions present different surfaces while retaining their machined profiles.

Structural & Functional Breakdown

• External Thread Structure: Provides direct fastening into tapped components.
• Internal Thread Structure: Supports mating with threaded shafts or screws.
• Shouldered Fastener Structure: Provides accurate axial positioning during assembly.
• Custom Drive Structure: Flats, slots or other drive features can be machined according to drawings.

Shoulders separate the locating function from the threaded connection. Compact heads and drive flats complete the fastening arrangement without adding a separate spacer.

Key Features

• Precision Thread Generation: Supports miniature and custom thread specifications.
• One-cycle Feature Integration: Threads, grooves, holes and drive features can be combined.
• Custom Fastener Geometry: Suitable for non-standard dimensions not available from catalog suppliers.
• High-volume Production Capability: Bar-fed Swiss machining supports repeatable automated production.

Applications

• Electronics
• Precision Instruments
• Medical Equipment
• Automotive Electronics
• Compact Mechanical Assemblies

Inside a small optical mechanism, a shouldered fastener holds a moving link at a defined position while its thread anchors into the surrounding frame. Shouldered sections form the locating surface and the drive remains accessible for assembly.

Custom machined fasteners also connect miniature electronic hardware and instrument subassemblies where a short head, stepped shank or unusual thread arrangement replaces several spacers and standard screws.