Mutual Screw & Supply

3/8-16 X 4" Hex Head Cap Screws | USA Made | PFC9 Alloy Steel Yellow Zinc (50 / Pkg.)

3/8-16 X 4" Hex Head Cap Screws | USA Made | PFC9 Alloy Steel Yellow Zinc (50 / - Main image
$49.34 $74.76 In stock

3/8-16 x 4" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • PFC9 Alloy Steel Yellow Zinc construction
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 50

Specifications

  • Thread Size: 3/8-16
  • Length: 4"
  • Threads Per Inch: 16
  • Material: Alloy Steel
  • Grade: PFC9
  • Finish: Yellow Zinc CR+6
  • Pack Quantity: 50
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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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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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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)

Carter I. ★★★★★

The hex heads didn’t strip even under a solid impact driver push, and that yellow zinc finish looks tough enough for outdoor wear. Threads cut clean into mild steel without any binding, so the whole package felt properly made. Fasteners are done right, plain and simple.

Stella D. ★★★★★

I needed some heavy-duty bolts for a press rebuild, and these 3/8-16 x 4" hex heads threaded in smoothly without any binding. The PFC9 alloy steel feels solid, and the head's hex drive made torquing them down easy with a wrench.

Leo U. ★★★★★

The yellow zinc finish wiped clean easily and the threads caught perfectly on the first try, no galling. These bolts feel rock-solid for the price, and the 50-count box is a nice bonus for a project that only needed a handful.