Mutual Screw & Supply

1/4-20 X 3/8" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Fully Threaded (3500 / Pkg.)

1/4-20 X 3/8" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Fully Threaded - Main image
$184.54 $307.57 In stock

1/4-20 x 3/8" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 5 Steel Yellow Zinc construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 3500

Specifications

  • Thread Size: 1/4-20
  • Length: 3/8"
  • Threads Per Inch: 20
  • Material: Steel
  • Grade: Grade 5
  • Finish: Yellow Zinc CR+6
  • Thread Style: Fully Threaded
  • Pack Quantity: 3500
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)

Michael U. ★★★★★

Got these for a jig I'm building and the fully threaded design made alignment a breeze. The yellow zinc coating looks good and the Grade 5 steel feels solid under the wrench.

John ★★★★★

I've been using these for small brackets on my assembly line and the yellow zinc coating holds up well against oil and dirt. The full threads grab cleanly even in thin metal, so I haven't had any stripped holes yet.

Hannah ★★★★★

Packed 3,500 hex heads in one box — the yellow zinc coating is nice and even, no burrs on the threads. I used a socket to drive them into a steel frame and they seated perfectly.