Holo-krome 77056 M4 X 0.70 Hex Socket Cap Screw 16mm

Product Description

The HOLO-KROME 77056 is a metric hex socket cap screw designed for precision fastening in mechanical assemblies, equipment fabrication, and industrial maintenance applications. Sized at M4 x 0.70 mm thread pitch with a 16 mm length under the head, this screw is fully threaded and driven with a standard hex (Allen) key. Constructed from austenitic Grade A4 stainless steel with a bright, uncoated finish, it delivers corrosion resistance suited for wet, chemical-exposure, or marine-adjacent environments. It meets ISO 4762 and ISO 3506-1 fastener standards, making it appropriate for applications where dimensional conformance is required.

This screw is used in light mechanical assemblies, enclosure panels, pump and valve components, instrumentation mounting, and general equipment maintenance where a low-profile socket-drive cap screw is specified. The M4 thread size and 16 mm under-head length suit compact hardware configurations typical in commercial equipment, control panels, and precision mechanical subassemblies. Grade A4 stainless construction makes it a common choice in HVAC, plumbing, pool, and process equipment where corrosion resistance is a priority.

Key Features

• M4 x 0.70 mm thread pitch, fully threaded along the 16 mm shank length under the head
• Austenitic Grade A4 stainless steel construction for corrosion resistance in demanding environments
• Bright, uncoated finish — no plating to chip, flake, or introduce dimensional variability
• Hex socket drive type for use with standard Allen keys or hex bit drivers
• Meets ISO 4762 and ISO 3506-1 fastener standards for dimensional and material conformance

Compatibility

Designed as a standard ISO 4762 metric hex socket cap screw for use in any M4 x 0.70 mm threaded application requiring a Grade A4 stainless steel fastener.

Installation Notes

Installation is performed with an appropriately sized hex key or Allen bit driver matching the M4 socket specification. Confirm the mating thread is clean and free of debris before driving. In corrosion-sensitive or stainless-to-stainless assemblies, apply an anti-galling compound to prevent thread seizure. Do not exceed the fastener rated torque range for M4 stainless hardware as specified in the applicable equipment service documentation.