Mutual Screw & Supply

1/4-28 X 7/8" Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded | 18/8 Stainless Steel (400 / Pkg.)

1/4-28 X 7/8" Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded - Main image
$40.35 $58.48 In stock

These 1/4-28 x 7/8" socket cap screws are manufactured from 18/8 Stainless Steel, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: 18/8 Stainless Steel
  • Head style: Button Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 1/4-28
  • Length: 7/8"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Button Head
  • Material: 18/8 Stainless Steel
  • Finish: Plain
  • Grade: 18/8
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 1/4-28
  • Length: 7/8"
  • Threads per inch: 28
  • Measurement type: Inch
  • Pack quantity: 400 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 (4.8 / 5 · 5 reviews)

Joseph P. ★★★★★

Installed these on a jig I'm building, and the button head sits flush without snagging. The hex drive is clean and didn't strip at all.

Adam K. ★★★★★

I needed a full box of exact-size fasteners for a jig build and these 1/4-28s didn't disappoint—every single one threaded cleanly into my tapped holes. The button head profile sits flush enough for tight clearances, and the 18/8 stainless feels solid for the price.

Ruby N. ★★★★★

The hex socket drive seated perfectly on my Allen wrench with zero stripping, and the 18/8 stainless finish cleaned up like new after a greasy day in the shop. I bought the 400-pack for a production run and every single one threaded smoothly into the tapped holes. You can't beat this consistency for