Holo-krome 04072 Spiral Vent Pull Out Dowel Pin 1/2x3 in

Product Description

The HOLO-KROME 04072 is a spiral vent pull out dowel pin engineered for precision alignment and secure fastening in metalworking, tooling, and mechanical assembly applications. Manufactured from Grade 4000 alloy steel with a black luster finish, this pin measures 0.5 inches in diameter and 3 inches in overall length. It features a threaded end for pull-out removal, eliminating the need for punch extraction. Surface hardness is rated at Rockwell C60-64 and core hardness at Rockwell C50-58, delivering the wear resistance and toughness required in demanding production environments. The spiral vent design allows air and lubricant to escape during press-in installation, reducing hydraulic lock. Licensed machinists, toolmakers, and maintenance mechanics are the primary installers.

This dowel pin is suited for jig and fixture building, die sets, machine tool assemblies, and general precision alignment work in both production and maintenance settings. The threaded pull-out feature makes it practical in blind-hole applications where conventional pin extraction is not feasible. It conforms to ASME/ANSI B18.8.2 and MIL-S-7742 standards, making it appropriate for both commercial manufacturing and government or defense-adjacent maintenance work where standardized fastener specifications are required.

Key Features

• Threaded end allows pull-out extraction from blind holes without pin punches
• Spiral vent channel relieves hydraulic pressure during press-in installation
• Grade 4000 alloy steel construction for high strength and toughness
• Surface hardness Rockwell C60-64 and core hardness Rockwell C50-58 for wear resistance
• Black luster finish provides mild corrosion resistance and surface protection
• Meets ASME/ANSI B18.8.2 and MIL-S-7742 fastener standards

Compatibility

Designed as an OEM-style replacement or service pin for precision alignment applications requiring a 0.5-inch diameter, 3-inch length spiral vent pull out dowel pin conforming to ASME/ANSI B18.8.2 and MIL-S-7742 specifications.

Installation Notes

Installation is typically performed by toolmakers, machinists, or maintenance mechanics using a hydraulic or arbor press. Ensure the receiving hole is reamed to the appropriate tolerance before pressing the pin into place. Power down and lock out all associated machinery before servicing any jig, fixture, or assembly containing dowel pins. The threaded end should be kept free of debris to allow clean engagement with a pull-out tool during removal.