316 Stainless Steel Cup Point Socket Set Screws

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

316 Stainless Steel Cup Point Socket Set Screws are commonly specified for locking collars, gears, pulleys, hubs, bearings, and rotating components where secure shaft positioning and exceptional corrosion resistance are required. The cup point design creates concentrated holding power to help resist loosening while maintaining reliable shaft retention in demanding industrial applications.

The addition of molybdenum gives 316 stainless steel excellent resistance to chlorides, saltwater, chemicals, and washdown environments, making these fasteners well suited for marine equipment, food processing machinery, beverage production, pharmaceutical equipment, chemical processing systems, water treatment facilities, instrumentation, and outdoor installations.

Available Sizes

Cold Headers stocks a wide range of 316 Stainless Steel Cup Point Socket Set Screws in numerous diameters and lengths for OEM, industrial, and MRO applications.

Looking for a Size That Isn't Shown?

Our online catalog includes many of our most commonly stocked products but does not represent 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 Cup Point Socket Set 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.

Request Information Search by Specification
Unit of Measure
Items
316 STAINLESS STEEL CUP POINT SET SCREW.png

4-40 x 1/8 316 Stainless Steel Cup Point Socket Set Screw
List Price (per 100 pieces) $31.00
316 STAINLESS STEEL CUP POINT SET SCREW.png

4-40 x 3/16 316 Stainless Steel Cup Point Socket Set Screw
List Price (per 100 pieces) $32.00
316 STAINLESS STEEL CUP POINT SET SCREW.png

4-40 x 1/4 316 Stainless Steel Cup Point Socket Set Screw
List Price (per 100 pieces) $33.00
316 STAINLESS STEEL CUP POINT SET SCREW.png

4-40 x 5/16 316 Stainless Steel Cup Point Socket Set Screw
List Price (per 100 pieces) $46.00
316 STAINLESS STEEL CUP POINT SET SCREW.png

4-40 x 3/8 316 Stainless Steel Cup Point Socket Set Screw
List Price (per 100 pieces) $47.00
Description N/A

4-40 x 1/8 316 Stainless Steel Cup Point Socket Set Screw is a 316 Stainless Steel Cup Point Socket Set Screw used when a headless internal-hex fastener is specified for retaining or positioning a component.

It is commonly used in shaft collars, hubs, and control components, where a headless fastener secures a part without external head clearance. The internal hex drive allows socket-wrench access from the threaded hole, which is useful when surrounding components leave little room for external wrenching.

Review the 4-40 thread, 1/8 in. length, socket size, cup point diameter, mating surface, and exposure before specifying the item. Confirm that point contact, 316 material, and service conditions fit the application. 316 stainless steel is often selected for improved corrosion resistance where moisture, cleaning chemicals, or chloride exposure matter. The cup point creates rim-focused contact that may help resist relative movement when the screw, mating material, and installation conditions are appropriate. Cold Headers supports exact-size sourcing for 316 stainless socket set screws, including uncommon lengths and replacement requirements.

Technical Highlights

  • Material: 316 Stainless Steel
  • Thread Size: 4-40
  • Length: 1/8 in.
  • Point Style: Cup Point
  • Nominal Screw Diameter: 0.112 in.
  • Hex Socket Size: 0.050 in.
  • Cup Point Diameter: 0.051-0.061 in.
  • Drive Type: Internal Hex

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

 		N/A

Designed for compact set-screw fastening, 4-40 x 3/16 316 Stainless Steel Cup Point Socket Set Screw combines 316 stainless steel construction with a cup-shaped point for localized contact at the mating surface.

Typical use cases include process equipment, pulleys, and sprockets, especially where localized contact helps position a component on a shaft. The internal hex drive keeps installation access compact while the headless body remains contained within the mating part.

For purchasing and replacement work, confirm the 4-40 thread, 3/16 in. length, socket size, and cup point diameter match the drawing or installed part. Confirm point contact, 316 material, and service conditions fit the application. Use 316 stainless where the assembly calls for this material because of exposure or process-equipment requirements. The recessed end form is often chosen where a witness mark or indentation on the mating surface is acceptable for the holding method. Cold Headers has supplied specialty socket fasteners since 1962 and helps buyers identify difficult 316 stainless set screw configurations.

Technical Highlights

  • Material: 316 Stainless Steel
  • Thread Size: 4-40
  • Length: 3/16 in.
  • Point Style: Cup Point
  • Nominal Screw Diameter: 0.112 in.
  • Hex Socket Size: 0.050 in.
  • Cup Point Diameter: 0.051-0.061 in.
  • Drive Type: Internal Hex

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

 		N/A

For assemblies that call for a 316 stainless set screw by exact size, 4-40 x 1/4 316 Stainless Steel Cup Point Socket Set Screw identifies the required material, cup point geometry, thread, and length.

In couplings, knobs, and handles, this screw is often selected where the screw must sit inside a tapped part. The socket drive helps maintenance and assembly teams install or remove the fastener without needing side clearance around a head.

Selection should account for mating material, drive access, chloride or chemical exposure, temperature, and whether localized point contact is acceptable. This 4-40 x 1/4 size gives buyers a precise callout for ordering. It can fit washdown equipment, outdoor machinery, instrumentation, water-treatment hardware, and process equipment when 316 is specified. The point geometry gives the installer a defined end form for localized holding contact rather than a general-purpose threaded plug. Cold Headers works with distributors, maintenance teams, and production buyers that need clear size identification for specialty stainless socket products.

Technical Highlights

  • Material: 316 Stainless Steel
  • Thread Size: 4-40
  • Length: 1/4 in.
  • Point Style: Cup Point
  • Nominal Screw Diameter: 0.112 in.
  • Hex Socket Size: 0.050 in.
  • Cup Point Diameter: 0.051-0.061 in.
  • 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 Steel Cup Point Socket Set Screw is commonly specified where a component must be secured from within a tapped hole rather than with an external screw head.

Applications often include instrumentation, fixtures, and adjustment assemblies, where compact internal-hex access is useful during setup. The internal hex recess gives the installer controlled drive engagement while keeping the fastener profile inside the tapped component.

The verified dimensions below help engineering and purchasing teams compare the screw before ordering. Confirm that point contact, 316 material, and service conditions fit the application. Final material selection should reflect chemical exposure, temperature, load, mating material, and service environment. This point style is intended for applications where localized contact is part of the retaining method, not for assemblies that require a nonmarking tip. Cold Headers helps match set screw thread, length, point style, material, and socket drive details for industrial purchasing and repair work.

Technical Highlights

  • Material: 316 Stainless Steel
  • Thread Size: 4-40
  • Length: 5/16 in.
  • Point Style: Cup Point
  • Nominal Screw Diameter: 0.112 in.
  • Hex Socket Size: 0.050 in.
  • Cup Point Diameter: 0.051-0.061 in.
  • Drive Type: Internal Hex

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

 		N/A

When a maintenance list or drawing calls for a 316 stainless cup point set screw, 4-40 x 3/8 316 Stainless Steel Cup Point Socket Set Screw provides a clear product callout for purchasing and replacement work.

It is commonly used in washdown equipment, packaging machinery, and automation systems, where stainless material and socket-drive serviceability matter. The internal hex drive allows socket-wrench access from the threaded hole, which is useful when surrounding components leave little room for external wrenching.

Review the 4-40 thread, 3/8 in. length, socket size, cup point diameter, mating surface, and exposure before specifying the item. Confirm that point contact, 316 material, and service conditions fit the application. 316 stainless steel is often selected for improved corrosion resistance where moisture, cleaning chemicals, or chloride exposure matter. Buyers should review the shaft or component surface condition, available drive access, environmental exposure, and required holding action before selecting this item. Cold Headers is a useful source when the part number, thread, point style, 316 material, or length is difficult to locate through standard catalog channels.

Technical Highlights

  • Material: 316 Stainless Steel
  • Thread Size: 4-40
  • Length: 3/8 in.
  • Point Style: Cup Point
  • Nominal Screw Diameter: 0.112 in.
  • Hex Socket Size: 0.050 in.
  • Cup Point Diameter: 0.051-0.061 in.
  • 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 1/8 in N/A 3/16 in N/A 1/4 in N/A 5/16 in N/A 3/8 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