Holo-krome 76048 M4x0.70 Hex Socket Cap Screw Alloy Steel

Product Description

The HOLO-KROME 76048 is a metric hex socket cap screw designed for high-strength mechanical fastening applications. This M4 x 0.70 screw features a 5 mm length under head and is fully threaded, making it suited for through-hole and tapped-hole assemblies where maximum thread engagement is required. Manufactured from alloy steel to material grade 12.9, it delivers one of the highest tensile strength ratings in the standard fastener range. The black oxide finish provides mild corrosion resistance and reduces light reflection in finished assemblies. Machinists, millwrights, and mechanical contractors install this fastener using a standard hex key or Allen driver.

This screw is used across industrial, commercial, and light manufacturing applications where a compact, low-profile cap screw is needed in tight clearance conditions. The internal hex drive allows installation in recessed or countersunk locations where a standard hex-head wrench cannot reach. It is commonly used in precision machine components, equipment frames, jigs, fixtures, and mechanical subassemblies requiring reliable clamp load at smaller fastener diameters.

Key Features

• M4 x 0.70 thread size with 5 mm length under head - fully threaded for maximum engagement
• Alloy steel construction, material grade 12.9 - high tensile and proof load strength
• Black oxide finish for mild corrosion resistance and reduced surface reflectivity
• Internal hex (Allen) drive for installation in tight or recessed locations
• Conforms to ANSI B1.13M, DIN 912, ISO 4762, and ISO 898-1 fastener standards

Compatibility

Designed as a standard metric hex socket cap screw suitable for tapped holes and through-hole assemblies requiring an M4 x 0.70 thread pitch in industrial and mechanical equipment applications.

Installation Notes

Installation is performed by machinists, millwrights, or mechanical technicians using a calibrated hex key or T-handle Allen driver sized for M4 socket cap screws. De-energize and lock out all equipment before fastener installation or removal on powered machinery. Ensure the mating tapped hole thread pitch and depth are compatible with this fastener before driving to avoid cross-threading or bottoming out. Grade 12.9 fasteners should not be substituted with lower-grade hardware in structural or load-bearing applications.