Vlier SLPH438A Spring Locating Pin 0.4375 in Body

Product Description

The VLIER SLPH438A is a spring locating pin used to index, align, or retain components in fixtures, jigs, tooling plates, and precision assemblies. The pin features an aluminum body with an alloy steel nose, combining lightweight construction with a wear-resistant contact point. Body diameter is 0.4375 inches, body length is 0.45 inches, and overall length is 0.69 inches. The spring mechanism delivers a 34-pound final end force, providing consistent holding pressure across repeated engagement cycles. This part is suited for machine shops, assembly operations, and industrial maintenance environments where repeatable part positioning is required.

Spring locating pins like the SLPH438A are commonly installed in production fixtures, die sets, and automated assembly tooling where quick-release indexing is needed. The 0.2-inch nose diameter and 0.4-inch nose length make this pin appropriate for applications requiring a compact, low-profile engagement point. It is typically installed by machinists, toolmakers, or maintenance technicians working on fixture design or repair.

Key Features

• Aluminum body construction reduces overall assembly weight
• Alloy steel nose provides durability at the contact and engagement point
• 34-pound final end force for consistent spring-loaded retention
• 0.4375-inch body diameter with 0.45-inch body length for compact installation
• 0.69-inch overall length suits tight clearance applications
• Single-piece quantity packaging for individual replacement or prototyping use

Compatibility

Designed as an OEM-style replacement or direct-fit locating pin for fixtures, jigs, and tooling assemblies requiring a 0.4375-inch body diameter spring pin with a 0.2-inch nose diameter.

Installation Notes

Spring locating pins are installed by toolmakers or maintenance technicians and typically require a press or hand-press fit into a bored or reamed housing. Ensure the mounting bore diameter and depth match the body dimensions before installation. Disengage any clamping or actuation mechanisms and relieve any spring preload before removing or replacing an existing pin. Do not exceed the rated end force by modifying spring preload or bore depth.