Holo-krome 04044 Spiral Vent Pull Out Dowel Pin 3/8x1.25in

Product Description

The HOLO-KROME 04044 is a spiral vent pull out dowel pin manufactured from Grade 4000 alloy steel with a black luster finish. It measures 0.375 inches in diameter and 1.25 inches in overall length. The pin features a threaded end design that allows for extraction using a standard puller tool, making it suitable for precision alignment applications in machined assemblies. Surface hardness is Rockwell C60-64, with a core hardness of Rockwell C50-58. This combination of through-hardening and surface hardness makes the pin well-suited for heavy-duty locating and alignment tasks. Installation and removal is handled by maintenance technicians and machinists working on industrial or mechanical assemblies.

This dowel pin is used in applications requiring precise component alignment and repeatable positioning in mechanical assemblies, tooling fixtures, and machined housings. The spiral vent groove allows trapped air and lubricant to escape during press-fit insertion, reducing hydraulic lock. The threaded end allows the pin to be pulled out without damage to the bore, making it a practical choice for assemblies that require periodic disassembly and reassembly. It conforms to ASME/ANSI B18.8.2 and MIL-S-7742 standards, making it appropriate for both commercial and military-specification applications.

Key Features

• Spiral vent groove relieves air and lubricant pressure during installation
• Threaded end enables clean extraction without bore damage
• Surface hardness of Rockwell C60-64 for wear resistance
• Core hardness of Rockwell C50-58 for toughness and impact resistance
• Meets ASME/ANSI B18.8.2 and MIL-S-7742 standards
• Black luster finish provides mild corrosion protection

Compatibility

Designed as a standard replacement or new-installation spiral vent pull out dowel pin for mechanical assemblies, tooling fixtures, and machined components requiring a 3/8-inch diameter locating pin conforming to ASME/ANSI B18.8.2 and MIL-S-7742 specifications.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using an arbor press or hand press. Ensure the receiving bore is clean, properly sized to tolerance, and free of burrs before insertion. Power down and de-energize or de-pressurize any assembly before servicing components. Use the threaded end with an appropriate puller for extraction to avoid bore damage.