Mutual Screw & Supply

5/16-18 X 5/8" Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded | 316 Stainless Steel (200 / Pkg.)

5/16-18 X 5/8" Socket Cap Screws | Button Head Hex Socket Drive | Fully - Main image
$32.61 $46.58 In stock

These 5/16-18 x 5/8" socket cap screws are manufactured from 316 Stainless Steel, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: 316 Stainless Steel
  • Head style: Button Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 5/8"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Button Head
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Grade: 316
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 5/8"
  • Threads per inch: 18
  • Measurement type: Inch
  • Pack quantity: 200 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)

Ruby ★★★★★

The hex socket drives on these screws fit my driver perfectly, making assembly on a jig much quicker than with slotted heads. The 316 stainless feels substantial and should resist corrosion well in my shop environment.

Abigail ★★★★★

I needed a bunch of these for a saltwater environment project, and the 316 stainless steel is exactly what I was hoping for—no rust worries. The button head profile sits nice and flush, and the hex socket drive grabs cleanly without slipping.

John ★★★★★

The hex drive seated perfectly with my Allen key, and the 316 stainless finish looks clean and professional on my jig setup. No burrs or defects across all 200 pieces.