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18-8 Stainless Steel Metric Socket Head Cap Screws

18-8 stainless 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 well suited for internationally designed 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 18-8 stainless steel, these metric socket head cap screws provide general corrosion resistance for many industrial environments exposed to moisture, humidity, or routine washdown. They are commonly specified for equipment utilizing metric fasteners where stainless steel construction is preferred together with the compact profile and installation advantages of an internal hex drive.

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 environment. Individual product pages provide verified engineering dimensions to assist engineers and purchasing professionals in selecting the correct fastener for demanding industrial applications.

Cold Headers supplies 18-8 stainless 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 18-8 Stainless 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.
  • 18-8 stainless steel: Provides general corrosion resistance for many industrial environments.
  • 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 material selection should reflect the mechanical and environmental 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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Length (mm)

Item #

Item Name

Diameter

Length

Material

Quantity

List Price (per 100 pieces)

N/A M3-0.5 x 5 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 5 mm N/A 18-8 Stainless Steel N/A 100 $9.00
N/A M3-0.5 x 6 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 6 mm N/A 18-8 Stainless Steel N/A 100 $9.05
N/A M3-0.5 x 8 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 8 mm N/A 18-8 Stainless Steel N/A 100 $9.10
N/A M3-0.5 x 10 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 10 mm N/A 18-8 Stainless Steel N/A 100 $9.15
N/A M3-0.5 x 12 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 12 mm N/A 18-8 Stainless Steel N/A 100 $9.20
N/A M3-0.5 x 16 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 16 mm N/A 18-8 Stainless Steel N/A 100 $9.70
N/A M3-0.5 x 20 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 20 mm N/A 18-8 Stainless Steel N/A 100 $9.90
N/A M3-0.5 x 25 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 25 mm N/A 18-8 Stainless Steel N/A 100 $10.50
N/A M3-0.5 x 30 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 30 mm N/A 18-8 Stainless Steel N/A 100 $11.50
N/A M3-0.5 x 35 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 35 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 40 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 40 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 45 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 45 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 50 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 50 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 55 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 55 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 60 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 60 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 65 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 65 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 70 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 70 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 75 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 75 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 80 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 80 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 90 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 90 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 100 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 100 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 110 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 110 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M3-0.5 x 120 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M3-0.5 N/A 120 mm N/A 18-8 Stainless Steel N/A 100 Call or Email for Pricing
N/A M4-0.7 x 5 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M4-0.7 N/A 5 mm N/A 18-8 Stainless Steel N/A 100 $9.10
N/A M4-0.7 x 6 18-8 Stainless Steel Metric Socket Head Cap Screw N/A M4-0.7 N/A 6 mm N/A 18-8 Stainless Steel N/A 100 $9.15
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