316 Stainless Steel Socket Head Cap Screws

316 stainless steel 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 internal hex socket allows installation where external wrench clearance is limited, making them well suited for machinery, automation equipment, instrumentation, pumps, valves, conveyors, marine equipment, chemical processing equipment, food processing machinery, maintenance repairs, and OEM manufacturing.

Manufactured from 316 stainless steel, these socket head cap screws provide enhanced corrosion resistance compared to many general-purpose stainless steel fasteners, making them well suited for applications exposed to moisture, saltwater, chemicals, and other corrosive environments. They are commonly specified where both corrosion resistance and the compact profile of an internal hex drive fastener are important design considerations.

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 service 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 316 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 316 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.
  • 316 stainless steel: Offers enhanced corrosion resistance for demanding industrial environments.
  • Broad industrial use: Commonly specified for marine equipment, chemical processing, food processing, machinery, 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 316 Stainless Steel 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 operating environment before selecting a fastener. Final material selection should reflect the mechanical and corrosion-resistance 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 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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4-40 x 3/16 316 Stainless Socket Head Cap Screw
List Price (per 100 pieces) $31.00
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4-40 x 1/4 316 Stainless Socket Head Cap Screw
List Price (per 100 pieces) $32.00
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4-40 x 5/16 316 Stainless Socket Head Cap Screw
List Price (per 100 pieces) $33.00
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4-40 x 3/8 316 Stainless Socket Head Cap Screw
List Price (per 100 pieces) $34.00
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4-40 x 7/16 316 Stainless Socket Head Cap Screw
List Price (per 100 pieces) $35.00
Description N/A 4-40 x 3/16 316 Stainless Socket Head Cap Screw is specified when a compact socket-head fastener must combine stainless corrosion resistance with dependable hex-key access. The material is appropriate for many salt-air, high-humidity, washdown, and chemical-adjacent service conditions. Hex-key installation helps technicians reach fastening points inside guards, covers, brackets, and fixtures. Typical placements include marine hardware, coastal production areas, and salt-air maintenance where stainless corrosion resistance and internal-hex access are practical. Engineering departments can evaluate head clearance, drive access, and material compatibility before releasing the assembly. Technical Highlights: Material: 316 Stainless Steel; Thread: 4-40 UNC; Length: 3/16 in.; Nominal Body Diameter: 0.112 in.; Head Diameter: 0.183 in. max / 0.176 in. min; Head Height: 0.112 in. max / 0.108 in. min; Hex Key Size: 3/32; Drive Type: internal hex. Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote. N/A 4-40 x 1/4 316 Stainless Socket Head Cap Screw is selected for stainless assemblies where moisture exposure, cleaning chemicals, or coastal air influence fastener choice. Its 316 stainless construction supports use in many marine, wastewater, and processing environments. The drive style is useful when repeated maintenance requires controlled removal and reinstallation. Typical placements include chemical processing skids, pump bases, and valve stations where stainless corrosion resistance and internal-hex access are practical. Industrial distributors can support customers who need a size-specific 316 stainless socket head cap screw for repair work. Technical Highlights: Material: 316 Stainless Steel; Thread: 4-40 UNC; Length: 1/4 in.; Nominal Body Diameter: 0.112 in.; Head Diameter: 0.183 in. max / 0.176 in. min; Head Height: 0.112 in. max / 0.108 in. min; Hex Key Size: 3/32; Drive Type: internal hex. Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote. N/A 4-40 x 5/16 316 Stainless Socket Head Cap Screw helps maintenance teams keep the specified stainless fastener family in service where corrosion-prone hardware is being replaced. The stainless alloy helps reduce corrosion concerns around moisture, cleaning solutions, and outdoor exposure. Hex-key installation helps technicians reach fastening points inside guards, covers, brackets, and fixtures. Typical placements include food processing equipment, washdown frames, and stainless access covers where stainless corrosion resistance and internal-hex access are practical. Purchasing agents can source the specified stainless fastener without changing the approved product family. Technical Highlights: Material: 316 Stainless Steel; Thread: 4-40 UNC; Length: 5/16 in.; Nominal Body Diameter: 0.112 in.; Head Diameter: 0.183 in. max / 0.176 in. min; Head Height: 0.112 in. max / 0.108 in. min; Hex Key Size: 3/32; Drive Type: internal hex. Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote. N/A 4-40 x 3/8 316 Stainless Socket Head Cap Screw is used where a drawing calls for 316 stainless material, socket-drive engagement, and a cylindrical head profile. 316 stainless is useful where a clean appearance and added resistance to chloride exposure are both important. The drive style is useful when repeated maintenance requires controlled removal and reinstallation. Typical placements include water treatment systems, filter assemblies, and outdoor panels where stainless corrosion resistance and internal-hex access are practical. Maintenance managers can match the thread, length, material, and head geometry already called out on service documentation. Technical Highlights: Material: 316 Stainless Steel; Thread: 4-40 UNC; Length: 3/8 in.; Nominal Body Diameter: 0.112 in.; Head Diameter: 0.183 in. max / 0.176 in. min; Head Height: 0.112 in. max / 0.108 in. min; Hex Key Size: 3/32; Drive Type: internal hex. Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote. N/A 4-40 x 7/16 316 Stainless Socket Head Cap Screw is commonly used when the fastener must match a specified thread and length while adding 316 stainless corrosion resistance. This material selection supports long-term service in many corrosive industrial and coastal settings. Hex-key installation helps technicians reach fastening points inside guards, covers, brackets, and fixtures. Typical placements include packaging machinery, guard panels, and adjustment brackets where stainless corrosion resistance and internal-hex access are practical. Design engineers can compare the listed head dimensions and hex key size against counterbore and tooling requirements. Technical Highlights: Material: 316 Stainless Steel; Thread: 4-40 UNC; Length: 7/16 in.; Nominal Body Diameter: 0.112 in.; Head Diameter: 0.183 in. max / 0.176 in. min; Head Height: 0.112 in. max / 0.108 in. min; Hex Key Size: 3/32; Drive Type: internal hex. Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
Brands N/A Cold Headers, Inc.
Diameter N/A 4-40
Length N/A 3/16 in N/A 1/4 in N/A 5/16 in N/A 3/8 in N/A 7/16 in
Material N/A 316 Stainless Steel
Quantity N/A 100
Note N/A Less Than Package Quantity Specified Plus 25%.
Package Type N/A Box