Set Screws / Headless (Set Screw) / Steel / Black Oxide
SKU: 281397-500 In Stock

5/16"-18 x 1 1/4" Cup Point Socket Set Screws / Steel / Nylon Pellet / Black Oxide

$280.48
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Product Description

5/16"-18 x 1 1/4" Cup Point Socket Set Screws / Steel / Nylon Pellet / Black Oxide

Specifications

MaterialSteel
FinishBlack Oxide
Size5/16"-18
Length1 1/4"
Head StyleHeadless (Set Screw)
DriveHex Socket (Allen)
Thread Pitch18 TPI
Thread ClassCoarse
Point TypeCup
HardnessC45 - C53
StandardASME B18.3
RoHS Compliance RoHS Compliant
Measurement SystemInch
RoHS Compliant

Frequently Asked Questions

Which set screw point type should I use?
Cup point (most common) provides maximum holding power on hard shafts. Cone point requires a matching dimple for permanent positioning. Flat point is for soft surfaces or applications requiring frequent adjustment. Half-Dog point locks into a groove for axial retention. Oval point is gentler on the shaft surface.
Does Black Oxide finish provide corrosion protection?
Black Oxide provides mild corrosion resistance through a controlled oxidation process. It is dimensionally stable (no plating buildup), will not chip or flake, and is suitable for indoor use. For outdoor or wet environments, additional oil coating or a different finish (zinc, stainless) is recommended.

SOCKET SET SCREWS CUP POINT COARSE NYLON-PELLET BLACK OXIDE / Alloy Nylon / Black Oxide

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Technical Specifications

Thread Size
5/16"-18
Thread Type
Coarse (UNC)
Material
Steel
Head Style
Headless (Set Screw)
Thread Pitch
18 TPI
Hardness
C45 - C53
SKU
281397-500