316 Stainless Steel Socket Head Cap Screws

Since 1962, Cold Headers has supplied precision 316 Stainless Steel Socket Head Cap Screws to OEM manufacturers, industrial distributors, maintenance professionals, and engineering teams throughout North America.

316 Stainless Steel Socket Head Cap Screws are commonly specified where high-strength fastening must be combined with outstanding corrosion resistance. Manufactured with an internal hex drive and cylindrical socket head, these fasteners are widely used in precision machinery, marine equipment, food processing systems, pharmaceutical equipment, chemical processing facilities, water treatment plants, instrumentation, outdoor installations, and OEM manufacturing where exposure to moisture, chlorides, or corrosive environments is a concern.

The addition of molybdenum gives 316 stainless steel superior resistance to saltwater, chemicals, and washdown environments compared to many other stainless grades, making it a preferred material for demanding industrial applications.

Available Sizes

Cold Headers stocks a broad range of 316 Stainless Steel Socket Head Cap Screws in numerous diameters and lengths for industrial, OEM, and MRO applications.

Looking for a Size That Isn't Shown?

Our online catalog represents many of our most commonly stocked products but does not include every size or special configuration available.

We can frequently quote and supply:

  • Special lengths
  • Non-catalog sizes
  • Difficult-to-source fasteners
  • OEM production quantities
  • Large production runs
  • Special sourcing requests

If you don't see the exact 316 Stainless Steel Socket Head Cap Screw you need, there's a good chance we can still supply it.

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