Mutual Screw & Supply

1"-8 X 3-3/4" Heavy Hex Cap Screws | ASTM A193 B7 Alloy Steel Plain | Partially Threaded (35 / Pkg.)

1"-8 X 3-3/4" Heavy Hex Cap Screws | ASTM A193 B7 Alloy Steel Plain | Partially - Main image
$105.41 $155.02 In stock

ASTM A193 B7 Alloy Steel Plain hex head cap screws, partially threaded, size 1"-8 x 3-3/4". A dependable fastener for machinery, equipment assembly, and general industrial use.

  • ASTM A193 B7 Alloy Steel Plain construction
  • partially threaded configuration
  • Hex head for wrench or socket drive
  • For machinery, equipment, and general-purpose fastening

Specifications

  • Thread Size: 1-8
  • Length: 3-3/4"
  • Threads Per Inch: 8
  • Material: ASTM A193 B7 Alloy Steel Plain
  • Finish: Plain
  • Thread Style: Partially Threaded
  • Pack Quantity: 35
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)

Andrew S. ★★★★★

Threads were clean and the 1-inch diameter seated perfectly into my coupling—no fighting or cross-threading. The partial thread length was exactly right for my flange setup, and at this price per package of 35, I'm stocked for several jobs.

Joshua ★★★★★

The heat treatment on these B7s feels right—they’re noticeably harder than the grade 5s I’ve been using, and the partial threading made alignment in the flange a breeze. Took a full torque without a hint of galling, which is exactly what I needed for the pump base rebuild.

Violet I. ★★★★★

The threads on these are clean and cut perfectly, so they started by hand with no binding. I used them to bolt down a heavy press at the shop, and the grip length on the partial thread made alignment a breeze.