Mutual Screw & Supply

#4-40 X 3/16" Knurled Cup Point Socket Set Screws | Alloy Steel Zinc Plated (250 / Pkg.)

#4-40 X 3/16" Knurled Cup Point Socket Set Screws | Alloy Steel Zinc Plated - Main image
$33.08 $48.65 In stock

#4-40 x 3/16" knurled cup point socket set screws in Alloy Steel Zinc Plated, with a hex socket drive for high-torque adjustment in tight spaces.

  • Hex socket drive
  • Knurled Cup Point tip
  • Alloy Steel Zinc Plated construction

Specifications

  • Thread Size: #4-40
  • Length: 3/16"
  • Point: Knurled Cup Point
  • Material: Alloy Steel Zinc Plated
  • Package Quantity: 250
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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)

Brian ★★★★★

The hex socket drive made cinching these down in a tight bracket far easier than I expected for such a small screw. The knurled cup point grips the shaft firmly, and all 250 arrived clean and consistent under the zinc plating.

Isabella ★★★★★

These little screws are perfect for my smaller fixtures where I need to lock a shaft without worrying about marring the surface. The knurled cup point really bites down and the zinc plating looks clean and won't flash-rust.

Ruby ★★★★★

The knurled cup point grips the shaft way better than a plain set screw—no slipping even after I torqued them down in a cramped spot with a hex key. The zinc plating also held up fine against a bit of moisture in my shop. For 250 pieces at this price, I’ve got spares for years.