Mutual Screw & Supply

1-8 X 3-1/2" Socket Cap Screws | Hex Socket Drive | Nylon Patch | Partially Threaded | Alloy Steel Thermal Black Oxide (10 / Pkg.)

1-8 X 3-1/2" Socket Cap Screws | Hex Socket Drive | Nylon Patch | Partially - Main image
$125.46 $209.1 In stock

These 1-8 x 3-1/2" socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Drive: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: 1-8
  • Length: 3-1/2"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: 1-8
  • Length: 3-1/2"
  • Threads per inch: 8
  • Measurement type: Inch
  • Pack quantity: 10 per package
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Olivia S. ★★★★★

These 3.5-inch socket cap screws have the perfect length for pulling together thick jig plates. I was impressed by the hex socket drive, which made installation easy without stripping. The black oxide finish gives them a clean, professional appearance.

George C. ★★★★★

The partial threads grabbed perfectly when I set these in my jig base—no slipping at all. The nylon patch held them snug during a full day of machining, and the black oxide finish looks sharp on the tooling.

Claire ★★★★★

The black oxide finish took the torque I threw at them on my jig build without a hint of galling, and the nylon patch held them snug through a full day of vibration. Exactly what I needed for the precision assembly.