Vlier SLPH438 Spring Locating Pin 0.4375 in Body

Product Description

The VLIER SLPH438 is a spring locating pin designed to provide precise, repeatable part positioning in fixtures, jigs, and tooling assemblies. The pin features an aluminum body measuring 0.4375 inches in diameter and 0.45 inches in length, paired with an alloy steel nose that is 0.2 inches in diameter and 0.24 inches in length. The overall assembled length is 0.69 inches. With a final end force of 22.5 pounds, this pin delivers consistent spring-loaded engagement suited to demanding production and maintenance environments. It is installed by machinists, tooling engineers, and maintenance technicians working with precision mechanical assemblies.

This spring locating pin is used in workholding fixtures, assembly jigs, and precision tooling applications where a retractable locating element is required. The spring-loaded nose retracts under load and returns to the locating position, making it well suited for applications that require rapid part loading and unloading without sacrificing positional accuracy. Its compact body dimensions allow installation in tight fixture layouts where space is limited.

Key Features

• Spring-loaded nose provides automatic retraction and positive part location
• Aluminum body construction reduces overall assembly weight
• Alloy steel nose offers wear resistance at the contact point
• 22.5 pound final end force for consistent, repeatable engagement
• Compact 0.69 inch overall length fits space-constrained fixture designs
• Sold individually, allowing single-piece replacement or incremental tooling builds

Compatibility

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

Installation Notes

Installation is typically performed by a machinist or tooling technician using standard press-fit or threaded installation methods appropriate to the fixture design. Power down or de-energize any automated fixture or clamping system before servicing locating pins. Verify bore diameter and depth in the fixture body match the pin body dimensions before installation. Do not exceed the rated end force when using the pin in applications with elevated spring preload requirements.