Alloy Steel Metric Socket Head Cap Screws

Alloy steel metric socket head cap screws are precision threaded fasteners featuring a cylindrical head and an internal hex drive for secure fastening in compact mechanical assemblies. Their metric thread sizes make them suitable for internationally standardized equipment, while the internal hex socket allows installation where external wrench clearance is limited. These fasteners are commonly used in industrial machinery, automation equipment, robotics, tooling, fixtures, conveyors, machine tools, maintenance repairs, and OEM manufacturing.

Manufactured from alloy steel, metric socket head cap screws are intended for demanding industrial mechanical applications requiring dependable fastening performance. Their cylindrical socket head provides a compact profile while allowing installation with standard metric hex keys or hex bits. They are frequently specified for precision equipment, production machinery, industrial automation systems, packaging equipment, material handling systems, and general mechanical assemblies.

Proper fastener selection should consider metric thread size, screw length, nominal body diameter, head diameter, head height, 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 socket head 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 Socket Head Cap Screws?

Metric thread sizes: Designed for equipment utilizing metric fasteners.
Cylindrical socket head: Compact design for applications with limited installation space.
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 hex socket size where available.

Selecting the Correct Metric Socket Head Cap Screw

Begin by confirming the required metric thread size and screw length. Review the body diameter, head diameter, head height, 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 socket head cap screws without unsupported inventory claims.

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

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Unit of Measure

Items	SHCS-AS-M M3-0.5 x 5 M3-0.5 x 5 Alloy Steel Metric Socket Head Cap Screw List Price (per 100 pieces) $7.50	SHCS-AS-M M3-0.5 x 6 M3-0.5 x 6 Alloy Steel Metric Socket Head Cap Screw List Price (per 100 pieces) $7.55	SHCS-AS-M M3-0.5 x 8 M3-0.5 x 8 Alloy Steel Metric Socket Head Cap Screw List Price (per 100 pieces) $7.50	SHCS-AS-M M3-0.5 x 10 M3-0.5 x 10 Alloy Steel Metric Socket Head Cap Screw List Price (per 100 pieces) $7.65	SHCS-AS-M M3-0.5 x 12 M3-0.5 x 12 Alloy Steel Metric Socket Head Cap Screw List Price (per 100 pieces) $7.70
Description	N/A M3-0.5 x 5 Alloy Steel Metric Socket Head Cap Screw helps engineers maintain metric hardware consistency in tooling, automation, and OEM equipment. 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. Technical Highlights Head Style: Cylindrical socket head, internal hex drive Thread Size: M3-0.5 (coarse metric pitch) Length: 5 mm Head Diameter: 5.50 mm max / 5.20 mm min Head Height: 3.00 mm max / 2.86 mm min Hex Key Size: 2.5 mm Minimum Key Engagement: 1.3 mm Material: Alloy Steel Dimensional Standard: ISO 4762 / DIN 912 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 Socket Head Cap Screw is used when a metric socket cap screw must secure components in compact industrial assemblies. 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. Technical Highlights Head Style: Cylindrical socket head, internal hex drive Thread Size: M3-0.5 (coarse metric pitch) Length: 6 mm Head Diameter: 5.50 mm max / 5.20 mm min Head Height: 3.00 mm max / 2.86 mm min Hex Key Size: 2.5 mm Minimum Key Engagement: 1.3 mm Material: Alloy Steel Dimensional Standard: ISO 4762 / DIN 912 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 Socket Head Cap Screw is specified for metric machine assemblies that need alloy steel socket head cap screw fastening. 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. Technical Highlights Head Style: Cylindrical socket head, internal hex drive Thread Size: M3-0.5 (coarse metric pitch) Length: 8 mm Head Diameter: 5.50 mm max / 5.20 mm min Head Height: 3.00 mm max / 2.86 mm min Hex Key Size: 2.5 mm Minimum Key Engagement: 1.3 mm Material: Alloy Steel Dimensional Standard: ISO 4762 / DIN 912 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 Socket Head Cap Screw supports metric machine building where internal hex drive access and alloy steel construction are required. 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. Technical Highlights Head Style: Cylindrical socket head, internal hex drive Thread Size: M3-0.5 (coarse metric pitch) Length: 10 mm Head Diameter: 5.50 mm max / 5.20 mm min Head Height: 3.00 mm max / 2.86 mm min Hex Key Size: 2.5 mm Minimum Key Engagement: 1.3 mm Material: Alloy Steel Dimensional Standard: ISO 4762 / DIN 912 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 Socket Head Cap Screw gives maintenance and purchasing teams a metric alloy steel fastener for defined machine locations. 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. Technical Highlights Head Style: Cylindrical socket head, internal hex drive Thread Size: M3-0.5 (coarse metric pitch) Length: 12 mm Head Diameter: 5.50 mm max / 5.20 mm min Head Height: 3.00 mm max / 2.86 mm min Hex Key Size: 2.5 mm Minimum Key Engagement: 1.3 mm Material: Alloy Steel Dimensional Standard: ISO 4762 / DIN 912 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
Key Size	N/A 2.5 mm
Material	N/A Alloy Steel
Quantity	N/A 100
Package Type	N/A Box
Note	N/A

1-773-775-7900

5514 N. Elston Ave

Mon - Fri 8:00 - 4:30

1-773-775-7900

5514 N. Elston Ave

Mon - Fri 8:00 - 4:30

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