Holo-krome 09005 Shoulder Screw M5x0.80 12.9 Alloy Steel

Product Description

The HOLO-KROME 09005 is a metric shoulder screw machined from grade 12.9 alloy steel, designed for precision fastening applications that require a ground cylindrical shoulder for bearing, pivoting, or locating functions. The shoulder measures 6 mm in diameter and 20 mm in length, with an M5x0.80 threaded shank and a 9.75 mm thread length. Drive engagement is through a 3 mm hex socket in a rounded head measuring 9.78 to 10 mm in diameter and 4.32 to 4.50 mm in height. The uncoated finish and grade 12.9 material deliver high tensile strength suitable for demanding mechanical assemblies. This screw is installed by machinists, maintenance technicians, and industrial assembly professionals.

This shoulder screw is used in applications where a precise cylindrical journal is needed to guide a bushing, bearing, or pivot point within a mechanical assembly. Typical installations include jigs, fixtures, linkages, and automated equipment where controlled rotational or sliding movement is required. The metric M5x0.80 thread and 6G fit class provide consistent thread engagement in standard metric tapped holes. The overall length of 34.25 mm suits compact assembly configurations common in both light and heavy industrial environments.

Key Features

• Grade 12.9 alloy steel construction for high tensile and proof load strength
• 6 mm precision shoulder diameter with 20 mm shoulder length for accurate locating and bearing surfaces
• M5x0.80 metric thread with 6G fit class per ANSI B1.13M and ISO 7379
• 3 mm hex socket drive in a rounded head for torque application in tight clearances
• Uncoated finish suitable for use as-supplied or with additional surface treatment
• Conforms to ISO 898-1 mechanical property standards for high-strength fasteners

Compatibility

Designed as a standard metric shoulder screw for use in mechanical assemblies requiring an M5x0.80 tapped hole and a 6 mm shoulder bore, conforming to ISO 7379 dimensional standards.

Installation Notes

Installation is performed by machinists or mechanical assembly technicians using a 3 mm hex key or socket driver. Ensure the mating bore and tapped hole are clean and free of burrs before installation. Grade 12.9 fasteners should not be welded or subjected to field heat treatment. Follow applicable engineering specifications for preload requirements in the assembly.