Mutual Screw & Supply

#1-64 X 3/8" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | Alloy Steel Thermal Black Oxide (200 / Pkg.)

#1-64 X 3/8" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | - Main image
$32.38 $51.4 In stock

These #1-64 x 3/8" socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Head style: Flat Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #1-64
  • Length: 3/8"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Flat Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #1-64
  • Length: 3/8"
  • Threads per inch: 64
  • Measurement type: Inch
  • Pack quantity: 200 per package
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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 (4.8 / 5 · 5 reviews)

Grace ★★★★★

I needed small fasteners for a precision jig build, and these #1-64 screws fit the countersunk holes perfectly with no wobble. The black oxide finish looks clean and seems tough enough for repeated adjustments.

Victoria E. ★★★★★

The hex socket drive grips the allen wrench perfectly, no stripping even at full torque on my jig fixture. For a 200-pack of alloy steel fasteners at this size, the threading was consistently clean across every single screw I've used so far.

Harper ★★★★★

The black oxide finish is holding up nicely on my jig builds, and the threads are clean enough that they seat smoothly every time. For 200 pieces at this price, the consistency in head depth across the batch impressed me.