Holo-krome 770407050 M4 X 0.70 Hex Socket Cap Screw 50mm

Product Description

The HOLO-KROME 770407050 is a metric hex socket cap screw in M4 x 0.70 thread size with a 50 mm length under head. It is manufactured from austenitic Grade A4 stainless steel with a bright, uncoated finish. This is a partially threaded fastener driven by a hex (Allen) key. It meets the dimensional requirements of ISO 4762 and the mechanical and corrosion-resistance requirements of ISO 3506-1. These screws are used in industrial assemblies, mechanical equipment, and trade installations where corrosion resistance and a clean, low-profile head are required. Licensed trades and maintenance professionals install them with standard metric hex key sets.

This fastener suits residential and commercial mechanical assemblies where stainless steel is specified for corrosion resistance — including HVAC equipment panels, pump housings, plumbing fixture mounting, electrical enclosures, and general trade-service applications. The M4 x 0.70 thread form is a standard ISO metric pitch, compatible with any tapped M4 x 0.70 hole or M4 x 0.70 nut. The 50 mm under-head length accommodates medium-depth clamping joints. The partial thread length provides a shank bearing area for shear-loaded joints.

Key Features

• Austenitic Grade A4 stainless steel — high corrosion resistance for wet or outdoor environments
• Bright, uncoated finish — no plating buildup that could affect thread fit
• Partially threaded shank — provides a bearing surface in shear-loaded applications
• Hex socket drive — compatible with standard metric Allen keys and hex bit drivers
• Conforms to ISO 4762 (dimensions) and ISO 3506-1 (mechanical properties)

Compatibility

Designed for use in any tapped or through-hole assembly requiring an M4 x 0.70 thread pitch. Fits standard M4 x 0.70 nuts, inserts, and tapped holes per ISO metric thread standards.

Installation Notes

Install with a calibrated metric hex key or hex bit driver sized for M4 socket cap screws. De-energize and lock out any equipment before replacing fasteners on live assemblies. Do not mix stainless fasteners with dissimilar metals in highly conductive or galvanic environments without appropriate isolation. Apply anti-seize compound to stainless threads when installing into stainless tapped holes to prevent galling.