Holo-krome 04056 Spiral Vent Pull Out Dowel Pin 3/8x3 in

Product Description

The HOLO-KROME 04056 is a spiral vent pull out dowel pin designed for precision alignment and controlled insertion and removal in close-tolerance assemblies. Manufactured from Grade 4000 alloy steel with a black luster finish, this pin measures 3/8 inch in diameter and 3 inches in overall length. It features a threaded end for pull-out tool engagement, making extraction straightforward in blind-hole applications. Surface hardness runs Rockwell C60-64 and core hardness Rockwell C50-58, providing the combination of wear resistance and toughness required in demanding production and maintenance environments. The spiral vent groove relieves air and hydraulic pressure during press-in installation.

This dowel pin is suited for use in metal fabrication, machine assembly, tooling fixtures, and industrial maintenance applications where precise component alignment is critical. The threaded pull-out design makes it a practical choice for assemblies that require periodic disassembly without damaging housings or bores. It conforms to MIL-S-7742, making it appropriate for applications where military or government fastener standards are specified. Typical installers include machinist trades, maintenance mechanics, and industrial assembly technicians.

Key Features

• Spiral vent groove relieves pressure during insertion into blind holes
• Threaded end allows pull-out tool engagement for clean extraction
• Grade 4000 alloy steel construction with Rockwell C60-64 surface hardness and C50-58 core hardness
• Black luster finish provides basic corrosion resistance and clean appearance
• Meets MIL-S-7742 fastener standard
• Nominal diameter 3/8 inch, overall length 3 inches

Compatibility

Designed as an OEM-style replacement or maintenance-grade spiral vent pull out dowel pin for industrial assemblies, tooling fixtures, and machinery requiring MIL-S-7742 compliant 3/8 inch diameter alignment pins.

Installation Notes

Installation is typically performed by machinist or maintenance mechanic trades using an arbor press or mallet appropriate to bore tolerance. De-energize, lock out, and tag out all machinery before servicing any pinned assembly. Use the threaded pull-out end with an appropriate extraction tool when removing the pin to avoid damaging the bore. Verify bore diameter and surface finish before installation to ensure proper interference or transition fit.