Carbon Steel Round Head Locating Pin

Core Features

Round Head Configuration – The head is formed with a circular profile that provides a grip surface for manual or tool-assisted handling. The round head serves as a positive stop to control insertion depth, preventing over-insertion into the locating bore.

Precision Locating Shaft – The cylindrical shaft is dimensioned with defined tolerances to provide the specified fit with mating bores. The locating diameter is maintained to ensure consistent positioning accuracy. Typical tolerances for locating pins include g6 or h7 for shaft diameters.

Positive Stop Function – The head seats against the workpiece surface when the pin is fully inserted, providing controlled positioning depth and preventing the pin from passing through the fixture.

Carbon Steel Construction – Manufactured from carbon steel with material composition controlled to meet specified strength and wear resistance requirements.

Product Characteristics

The pin is manufactured with a round head and precision-ground locating shaft. The head diameter is dimensioned to provide a grip surface and positive stop. The locating shaft diameter is maintained with specified tolerances to provide the required fit with the mating bore.

Material composition is controlled to meet specified strength requirements. Carbon steel grades are available for general applications. Heat treatment processes may be applied to achieve defined hardness for wear resistance in high-cycle applications. The pin offers wear resistance and the ability to withstand repeated insertion and removal cycles.

Surface treatment options include zinc plating with various chromate finishes, black oxide, phosphate coating, and nickel plating. Each treatment is applied according to defined coating thickness and corrosion resistance parameters.

Application Scenarios

Jig and Fixture Assembly – Applied in assembly jigs and fixtures where precise workpiece positioning is required. The locating pin provides accurate positional reference for components during assembly operations.

Inspection and Gauging – Employed in inspection jigs and gauging fixtures where precise positioning of the workpiece relative to measurement equipment is required.

Automotive Manufacturing – Used in vehicle body assembly and component positioning applications where locating pins provide accurate positioning of components during assembly operations.

Machining Fixtures – Applied in machining operations where workpieces require precise location and retention relative to cutting tools. The round head enables easy insertion and removal of workpieces.

Customization Options

Specifications and configurations can be adjusted based on application requirements. Locating diameter, head diameter, overall length, and head height are customizable. Material grades include carbon steel for general applications, alloy steel for enhanced strength, and stainless steel for corrosion-resistant requirements. Surface treatments are selectable according to environmental exposure conditions, including zinc plating, black oxide, phosphate coating, and nickel plating.

Frequently Asked Questions

Q: What is the purpose of the round head on this locating pin?
A: The round head provides a grip surface for manual or tool-assisted handling, serving as a positive stop to control insertion depth. It prevents over-insertion and supports easy removal of the pin from the locating bore.

Q: What is the typical tolerance for locating pin shaft diameters?
A: Locating pin shaft diameters are typically maintained to g6 or h7 tolerances to provide specified fit with mating bores.

Q: What materials are available for locating pins?
A: Material grades include carbon steel (such as 1045 or equivalent) for general applications, alloy steel for enhanced strength, and stainless steel for corrosion-resistant applications.

Q: What surface treatments are available?
A: Surface treatments include zinc plating (clear, yellow, black chromate), black oxide, phosphate coating, nickel plating, and other options based on environmental exposure conditions.

Q: Are these pins suitable for high-cycle applications?
A: Yes. The pin can be heat-treated to achieve defined hardness levels for wear resistance in high-cycle applications. Surface treatments can also enhance wear resistance and reduce friction during insertion and removal.

Installation Considerations

The locating pin should be inserted into the locating bore with the round head positioned to seat against the workpiece surface. The locating shaft should provide the specified fit with the bore. For applications requiring frequent insertion and removal, the pin material hardness and surface finish should be selected based on cycle requirements and wear resistance. The pin should be removed by grasping the round head and pulling it from the bore.

For plated or coated pins, coating thickness should be within specified tolerances to maintain fit with mating components. Thread condition should be inspected before installation for threaded locating pins. When used in assembly fixtures, the pin should be positioned to provide the specified workpiece location and orientation.