Mutual Screw & Supply

1"-8 X 4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (10 / Pkg.)

1"-8 X 4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | - Main image
$182.49 $260.7 In stock

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

  • Grade L9 Alloy Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 10

Specifications

  • Thread Size: 1"-8
  • Length: 4"
  • Threads Per Inch: 8
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 10
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)

Lucy ★★★★★

Pulled an old truck axle apart for a custom trailer build, and these L9 bolts held up perfectly under the torque. The zinc coating seems heavier than standard hardware store stuff, which is a nice bonus. Not a single issue threading into the tapped hole.

Grace ★★★★★

Used these on a milling machine frame rebuild, and the partially threaded design made alignment far easier. The yellow zinc coating seems tough enough to resist shop grime. Really solid fasteners for the price.

Emily ★★★★★

Got these for heavy equipment repairs and the yellow zinc coating has held up well against dirt and moisture. The hex head gave my socket wrench a solid grip for torquing down to spec.