Mutual Screw & Supply

HOLO-KROME 42042 5/16-18 X 3/8" Knurled Cup Point Socket Set Screws | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 42042 5/16-18 X 3/8" Knurled Cup Point Socket Set Screws | Alloy - Main image
$18.67 $29.64 In stock

5/16-18 X 3/8" knurled cup point socket set screws from Holo-Krome, part number 42042, headless and hex socket driven for locating and clamping components on shafts and in tapped holes.

  • Hex socket drive
  • Knurled Cup point
  • Alloy Steel Thermal Black Oxide construction
  • Made in the USA by Holo-Krome

Specifications

  • Part Number: 42042
  • Thread Size: 5/16-18
  • Length: 3/8"
  • Point Type: Knurled Cup
  • Drive: Socket
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Package Quantity: 100
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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 (4.6 / 5 · 5 reviews)

Daniel W. ★★★★★

The hex socket drive made seating these into the tapped holes surprisingly effortless, even with the cup point biting in. The thermal black oxide finish holds up well during assembly without any flaking. Exactly the clamping grip I needed for a shaft fixture.

Sophia ★★★★★

The knurled cup point really grips the socket without slipping during assembly, and the black oxide finish hasn't shown any wear after a few installs. Exactly the consistency I've come to expect from this style of screw.

Emma H. ★★★★★

These set screws hold better than the standard ones I used before, the black oxide finish also seems to resist rust well so far. The knurled cup point gave me a secure bite on the shaft without any slipping during assembly.