Holo-krome 04048 Spiral Vent Pull Out Dowel Pin 3/8 X 1-3/4 in

Product Description

The HOLO-KROME 04048 is a spiral vent pull out dowel pin designed for precision alignment and locating applications in mechanical assemblies. Manufactured from Grade 4000 alloy steel with a black luster finish, this pin measures 3/8 inch in diameter and 1.75 inches in overall length. The threaded end allows for controlled extraction without damaging mating components. Surface hardness is rated at Rockwell C60-64, with a core hardness of Rockwell C50-58, giving it the toughness needed for high-load, press-fit environments. The spiral vent groove reduces hydraulic lock during installation, making seating and removal more consistent in close-tolerance bores.

This dowel pin is suited for use in jigs, fixtures, dies, molds, and precision machine components where repeatable alignment is critical. Machinists, toolmakers, and maintenance technicians working in industrial, manufacturing, and fabrication environments are the primary installers. The threaded pull out feature is particularly useful in blind-hole applications where a standard pin would otherwise be difficult to remove without specialized extraction tools. Meets ASME/ANSI B18.8.2 and MIL-S-7742 standards.

Key Features

• Spiral vent groove reduces hydraulic lock during press-fit installation
• Threaded end enables clean extraction from blind holes
• Surface hardness of Rockwell C60-64 for wear resistance in high-load applications
• Core hardness of Rockwell C50-58 provides toughness and resistance to shear
• Black luster finish for corrosion resistance and surface protection
• Meets ASME/ANSI B18.8.2 and MIL-S-7742 dimensional and performance standards

Compatibility

Designed as a standard-dimension replacement or new-installation dowel pin for jigs, fixtures, dies, molds, and precision machined components requiring 3/8 inch diameter locating pins in blind or through-hole configurations.

Installation Notes

Installation and removal should be performed by qualified machinists or maintenance technicians familiar with press-fit fastener procedures. Always ensure the receiving bore is clean, dimensionally correct, and within tolerance before pressing the pin. Use appropriate arbor press equipment to avoid damaging the pin or bore surface. The threaded end requires a matching extraction tool or pull bolt for removal from blind holes — do not attempt to drive the pin out from the threaded end.