Value Collection HC3XX20120 Hex Head Cap Screw M20x2.50x120

Product Description

The VALUE COLLECTION HC3XX20120 is a metric hex head cap screw designed for fastening applications that demand corrosion resistance and dimensional precision. Manufactured from Grade 316 austenitic stainless steel (Grade A4), this fully threaded fastener carries an M20 x 2.50 thread profile with a 120 mm length under head. The bright, uncoated finish leaves the base alloy exposed for maximum resistance to oxidation and chemical attack. It conforms to DIN 933, EN 24017, and ISO 4017 standards, making it a recognized option across industrial and marine-adjacent fabrication work. Installation requires a 30 mm hex wrench or socket. Typical installers include millwrights, pipefitters, marine technicians, and structural fabricators working to metric specifications.

This fastener is suited for structural assemblies, equipment mounting, pipe flange connections, and general mechanical fastening where exposure to moisture, salt, or mild chemicals is a factor. The M20 thread size and 120 mm length make it appropriate for medium-to-heavy-duty bolted joints in both commercial and industrial settings. Its compliance with internationally recognized dimensional standards supports use in applications where controlled thread fit and load ratings are documented requirements.

Key Features

• Grade 316 austenitic stainless steel (A4) provides strong resistance to chloride and chemical corrosion
• Fully threaded shank along the 120 mm under-head length for maximum thread engagement
• M20 x 2.50 thread pitch conforms to standard metric thread specifications
• 30 mm hex drive accommodates standard metric wrenches and impact sockets
• Bright, uncoated finish — no coating delamination risk in wet or submerged environments
• Meets DIN 933, EN 24017, and ISO 4017 dimensional and tolerance standards

Compatibility

Designed as a direct-fit metric fastener for any application requiring an M20 x 2.50 x 120 mm fully threaded hex head cap screw conforming to DIN 933, EN 24017, or ISO 4017 specifications.

Installation Notes

Installation should be performed by a qualified tradesperson using a calibrated torque wrench sized for a 30 mm hex drive. Always verify mating thread condition and material compatibility before installation — Grade 316 stainless fasteners can gall when threaded into stainless nuts or tapped stainless holes without appropriate anti-seize compound. De-energize and depressurize any system before servicing fastened joints. Consult applicable structural or mechanical codes for required torque values, as no torque specification was provided with this fastener.