Alloy Steel Metric Flat Head Socket Cap Screws

Alloy steel metric flat head socket cap screws are precision threaded fasteners featuring a countersunk flat head and an internal hex drive for secure fastening in metric mechanical assemblies. When installed in a properly prepared countersunk hole, the head sits flush with the surrounding surface, making these fasteners well suited for applications where surface clearance, appearance, or moving components require a smooth finished profile. The internal hex drive allows installation where external wrench clearance is limited.

Manufactured from alloy steel, these metric flat head socket cap screws are intended for demanding industrial mechanical applications requiring dependable fastening performance. Their metric thread sizes make them suitable for internationally designed equipment utilizing metric fasteners. They are commonly specified for machinery, automation equipment, robotics, machine tools, industrial tooling, fixtures, conveyors, maintenance repairs, and OEM manufacturing.

Proper fastener selection should consider metric thread size, screw length, countersink dimensions, nominal body diameter, head diameter, head height, metric hex socket size, mating-thread engagement, installation clearance, and service conditions. Individual product pages provide verified engineering dimensions to assist engineers and purchasing professionals in selecting the appropriate fastener.

Cold Headers supplies alloy steel metric flat head socket cap screws in a broad range of metric thread sizes and lengths, including standard, uncommon, and difficult-to-source configurations. Our catalog is organized to simplify exact-size sourcing while providing consistent engineering information across every product family.

Why Choose Alloy Steel Metric Flat Head Socket Cap Screws?

Countersunk flat head: Installs flush within a properly prepared countersunk hole.
Metric thread sizes: Designed for machinery and equipment utilizing metric fasteners.
Internal hex drive: Allows installation using standard metric hex keys or hex bits.
Alloy steel construction: Intended for demanding industrial mechanical applications.
Verified engineering dimensions: Product pages provide metric thread size, screw length, body diameter, head diameter, head height, and metric hex socket size where available.

Selecting the Correct Metric Flat Head Socket Cap Screw

Begin by confirming the required metric thread size and screw length. Review the countersink dimensions, body diameter, head diameter, head height, metric hex socket size, installation clearance, mating-thread engagement, and operating environment before selecting a fastener. Final selection should reflect the mechanical requirements of the completed assembly.

Cold Headers Inc. has supplied specialty industrial socket fasteners since 1962. Our catalog helps engineers, distributors, maintenance professionals, and purchasing teams locate exact metric sizes, uncommon lengths, and difficult-to-find flat head socket cap screws without unsupported inventory claims.

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.

Unit of Measure

Items	FHCS-AS-M M3-0.5 x 5 M3-0.5 x 5 Alloy Steel Metric Flat Head Socket Cap Screw List Price (per 100 pieces) Call or Email for Pricing	FHCS-AS-M M3-0.5 x 6 M3-0.5 x 6 Alloy Steel Metric Flat Head Socket Cap Screw List Price (per 100 pieces) $7.70	FHCS-AS-M M3-0.5 x 8 M3-0.5 x 8 Alloy Steel Metric Flat Head Socket Cap Screw List Price (per 100 pieces) $7.75	FHCS-AS-M M3-0.5 x 10 M3-0.5 x 10 Alloy Steel Metric Flat Head Socket Cap Screw List Price (per 100 pieces) $7.80	FHCS-AS-M M3-0.5 x 12 M3-0.5 x 12 Alloy Steel Metric Flat Head Socket Cap Screw List Price (per 100 pieces) $7.85
Description	N/A M3-0.5 x 5 Alloy Steel Metric Flat Head Socket Cap Screw helps engineers keep metric panels, covers, and enclosures smooth while preserving socket drive access. Alloy steel construction is commonly selected for metric fastening locations in OEM machinery and industrial maintenance. This part is useful where purchasing teams need exact metric size matching without converting to inch dimensions. The M3-0.5 x 5 size supports exact catalog selection for machine guards, equipment covers, panels, brackets, and manufacturing workcells. For engineers, OEM manufacturers, purchasing managers, and maintenance professionals, this alloy steel part helps match the fastener to the assembly without changing the locked dimensions. Industrial distributors, purchasing teams, maintenance professionals, and machine builders are common sourcing contexts for this product family. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.	N/A M3-0.5 x 6 Alloy Steel Metric Flat Head Socket Cap Screw is used when metric machine components need a flat head socket cap screw for obstruction-free installation. Applications include machine building, fixture work, robotics, packaging equipment, and replacement hardware programs. Metric sizing helps engineers maintain hardware consistency in globally sourced equipment and metric machine designs. The M3-0.5 x 6 size supports exact catalog selection for robotics, packaging machinery, inspection fixtures, and serviceable machine components. For engineers, OEM manufacturers, purchasing managers, and maintenance professionals, this alloy steel part helps match the fastener to the assembly without changing the locked dimensions. Automation systems, tooling plates, machine frames, and engineered fastening locations are common sourcing contexts for this product family. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.	N/A M3-0.5 x 8 Alloy Steel Metric Flat Head Socket Cap Screw is designed for metric countersunk installations where the fastener head must sit flush after assembly. Internal hex drive access supports controlled installation in compact assemblies, service panels, tooling, and automation equipment. Alloy steel construction is commonly selected for metric fastening locations in OEM machinery and industrial maintenance. The M3-0.5 x 8 size supports exact catalog selection for tool and die work, fixture construction, material-handling equipment, and assembly machinery. For engineers, OEM manufacturers, purchasing managers, and maintenance professionals, this alloy steel part helps match the fastener to the assembly without changing the locked dimensions. Oem production, distributor stock programs, plant maintenance, and repair departments are common sourcing contexts for this product family. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.	N/A M3-0.5 x 10 Alloy Steel Metric Flat Head Socket Cap Screw supports metric OEM machinery where recessed alloy steel fastening is needed for clean finished surfaces. This part is useful where purchasing teams need exact metric size matching without converting to inch dimensions. Applications include machine building, fixture work, robotics, packaging equipment, and replacement hardware programs. The M3-0.5 x 10 size supports exact catalog selection for industrial machinery, maintenance repairs, production equipment, and equipment rebuilds. For engineers, OEM manufacturers, purchasing managers, and maintenance professionals, this alloy steel part helps match the fastener to the assembly without changing the locked dimensions. Machine guards, equipment covers, panels, brackets, and manufacturing workcells are common sourcing contexts for this product family. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.	N/A M3-0.5 x 12 Alloy Steel Metric Flat Head Socket Cap Screw gives maintenance teams a metric countersunk fastener for covers, housings, fixtures, and equipment panels. Metric sizing helps engineers maintain hardware consistency in globally sourced equipment and metric machine designs. Internal hex drive access supports controlled installation in compact assemblies, service panels, tooling, and automation equipment. The M3-0.5 x 12 size supports exact catalog selection for machine building, tooling, fixtures, automation equipment, and OEM machinery. For engineers, OEM manufacturers, purchasing managers, and maintenance professionals, this alloy steel part helps match the fastener to the assembly without changing the locked dimensions. Robotics, packaging machinery, inspection fixtures, and serviceable machine components are common sourcing contexts for this product family. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
Brands	N/A Cold Headers, Inc.
Diameter	N/A M3-0.5
Length	N/A 5 mm	N/A 6 mm	N/A 8 mm	N/A 10 mm	N/A 12 mm
Material	N/A Alloy Steel
Quantity	N/A 100
Key Size	N/A 2 mm
Note	N/A Less Than Package Quantity Specified Plus 25%.
Package Type	N/A Box