Mutual Screw & Supply

1/2-20 X 3-3/4" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

1/2-20 X 3-3/4" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially - Main image
$33.63 $49.45 In stock

1/2-20 x 3-3/4" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 5 Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 25

Specifications

  • Thread Size: 1/2-20
  • Length: 3-3/4"
  • Threads Per Inch: 20
  • Material: Steel
  • Grade: Grade 5
  • Finish: Yellow Zinc CR+6
  • Thread Style: Partially Threaded
  • Pack Quantity: 25
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Penelope E. ★★★★★

The partial thread on these is spot-on for bolting down a gearbox flange where I needed full grip in the hub but clearance past the bearing. Grade 5 yellow zinc held up fine under a wrench torqued to spec, and the hex head seated cleanly in my socket without stripping.

Mia ★★★★★

Exactly the right thread pitch for my lathe's tool post bolts; the Grade 5 hardness gives me peace of mind under heavy cutting loads.

Henry ★★★★★

The partially threaded section grabbed perfectly when I torqued these down on a jig frame, and the hex heads seated deep in my socket without stripping. The yellow zinc finish is holding up fine after a week of shop grime.