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18-8 Stainless Steel Socket Head Cap Screws

18-8 stainless steel socket head cap screws are precision threaded fasteners featuring a cylindrical head and an internal hex drive for high-strength fastening in compact assemblies. Their internal hex socket allows installation where external wrench clearance is limited, making them well suited for machinery, automation equipment, tooling, fixtures, pumps, conveyors, robotics, instrumentation, maintenance repairs, and OEM manufacturing.

Manufactured from 18-8 stainless steel, these socket head cap screws provide general corrosion resistance for many industrial environments exposed to moisture, humidity, or routine washdown. They are commonly specified where stainless steel construction is required together with the compact profile and efficient installation characteristics of an internal hex drive fastener.

Proper fastener selection should consider thread size, screw length, nominal body diameter, head diameter, head height, hex socket size, mating-thread engagement, installation clearance, and operating environment. Individual product pages provide verified engineering dimensions to help engineers and purchasing professionals specify the correct fastener for demanding industrial applications.

Cold Headers supplies 18-8 stainless steel socket head cap screws in a broad range of inch 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 Socket Head Cap Screws?

  • Cylindrical socket head: Compact design for applications with limited installation space.
  • Internal hex drive: Allows installation using standard hex keys or hex bits.
  • 18-8 stainless steel: Provides general corrosion resistance for many industrial environments.
  • Broad industrial use: Commonly specified for machinery, tooling, automation, maintenance, and OEM assemblies.
  • Verified engineering dimensions: Product pages provide thread size, body diameter, head diameter, head height, and hex socket size where available.

Selecting the Correct Socket Head Cap Screw

Begin by confirming the required thread size and screw length. Review the nominal body diameter, head diameter, head height, hex socket size, installation clearance, mating-thread engagement, and environmental conditions before selecting a fastener. Final material selection should reflect the mechanical and service requirements of the completed assembly.

Cold Headers Inc. has supplied specialty industrial socket fasteners since 1962. Our catalog helps engineers, distributors, maintenance teams, and purchasing professionals locate exact 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
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Item #

Item Name

Diameter

Length

Material

Quantity

List Price (per 100 pieces)

1/2-13 x 3 SHCS 18-8 N/A 1/2-13 Diameter and 3 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 1/2-13 N/A 3 in N/A 18-8 Stainless Steel N/A 25 $170.00
5/8-11 x 1/4 SHCS 18-8 N/A 5/8-11 Diameter and 1/4 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 1/4 in N/A 18-8 Stainless Steel N/A 25 Call or Email for Pricing
5/8-11 x 5/16 SHCS 18-8 N/A 5/8-11 Diameter and 5/16 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 5/16 in N/A 18-8 Stainless Steel N/A 25 Call or Email for Pricing
5/8-11 x 3/8 SHCS 18-8 N/A 5/8-11 Diameter and 3/8 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 3/8 in N/A 18-8 Stainless Steel N/A 25 Call or Email for Pricing
5/8-11 x 7/16 SHCS 18-8 N/A 5/8-11 Diameter and 7/16 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 7/16 in N/A 18-8 Stainless Steel N/A 25 Call or Email for Pricing
5/8-11 x 1/2 SHCS 18-8 N/A 5/8-11 Diameter and 1/2 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 1/2 in N/A 18-8 Stainless Steel N/A 25 Call or Email for Pricing
5/8-11 x 5/8 SHCS 18-8 N/A 5/8-11 Diameter and 5/8 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 5/8 in N/A 18-8 Stainless Steel N/A 25 Call or Email for Pricing
5/8-11 x 3/4 SHCS 18-8 N/A 5/8-11 Diameter and 3/4 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 3/4 in N/A 18-8 Stainless Steel N/A 25 Call or Email for Pricing
5/8-11 x 7/8 SHCS 18-8 N/A 5/8-11 Diameter and 7/8 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 7/8 in N/A 18-8 Stainless Steel N/A 25 Call or Email for Pricing
5/8-11 x 1 SHCS 18-8 N/A 5/8-11 Diameter and 1 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 1 in N/A 18-8 Stainless Steel N/A 25 $160.00
5/8-11 x 1 1/4 SHCS 18-8 N/A 5/8-11 Diameter and 1 1/4 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 1 1/4 in N/A 18-8 Stainless Steel N/A 25 $170.00
5/8-11 x 1 1/2 SHCS 18-8 N/A 5/8-11 Diameter and 1 1/2 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 1 1/2 in N/A 18-8 Stainless Steel N/A 25 $190.00
5/8-11 x 1 3/4 SHCS 18-8 N/A 5/8-11 Diameter and 1 3/4 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 1 3/4 in N/A 18-8 Stainless Steel N/A 25 $210.00
5/8-11 x 2 SHCS 18-8 N/A 5/8-11 Diameter and 2 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 2 in N/A 18-8 Stainless Steel N/A 25 $220.00
5/8-11 x 2 1/4 SHCS 18-8 N/A 5/8-11 Diameter and 2 1/4 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 2 1/4 in N/A 18-8 Stainless Steel N/A 25 $250.00
5/8-11 x 2 1/2 SHCS 18-8 N/A 5/8-11 Diameter and 2 1/2 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 2 1/2 in N/A 18-8 Stainless Steel N/A 25 $270.00
5/8-11 x 2 3/4 SHCS 18-8 N/A 5/8-11 Diameter and 2 3/4 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 2 3/4 in N/A 18-8 Stainless Steel N/A 25 $290.00
5/8-11 x 3 SHCS 18-8 N/A 5/8-11 Diameter and 3 Inch (in) Length 18-8 Stainless Steel Socket Head Cap Screw N/A 5/8-11 N/A 3 in N/A 18-8 Stainless Steel N/A 25 $325.00
Unit of Measure
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