1/2-20 X 4" Cup Point Socket Set Screws | Alloy Steel (50 / Pkg.)

Name: 1/2-20 X 4" Cup Point Socket Set Screws | Alloy Steel (50 / Pkg.)
Brand: Mutual Screw
SKU: 5164SSC
Price: 161.56 USD
Availability: InStock
Rating: 5.0 (5 reviews)

1/2-20 X 4" Cup Point Socket Set Screws | Alloy Steel (50 / Pkg.) - Main image

$161.56 ~~$234.15~~ In stock

1/2-20 x 4" cup point socket set screws in Alloy Steel, with a hex socket drive for high-torque adjustment in tight spaces.

Hex socket drive
Cup Point tip
Alloy Steel construction

Specifications

Thread Size: 1/2-20
Length: 4"
Point: Cup Point
Material: Alloy Steel
Package Quantity: 50

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Customer Reviews (5.0 / 5 · 5 reviews)

Violet V. ★★★★★ Oct 23, 2026

Installed these in a tight jig setup and the full 4-inch length gave me just enough reach without needing a spacer. Cup point bit into the steel shaft cleanly on the first try.

Sofia R. ★★★★★ Oct 22, 2026

The hex socket drive held up perfectly when I torqued these into a tight spot on my milling machine. All fifty screws came with clean threads and consistent cup points, which made the alignment job much smoother than I expected.

Matthew A. ★★★★★ Oct 21, 2026

These 4-inch long set screws worked perfectly for aligning a heavy machine base where regular screws wouldn't reach. The cup point bites into the steel nicely and the hex socket gave me plenty of torque with an Allen key.