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18-8 Stainless Steel Hex Cap Screw: 18-8 Stainless Steel, 5/16"-18 Thread Size, 4 1/2 in Shank Lg, 1/2 in Head Wd, 10 PK

Item # 266Z591

$11.69 Pack of 10

Product Specs

Material: 18-8 Stainless Steel
Thread Size: 5/16"-18
Drive: Hex
Shank Length: 4 1⁄2 in
Thread: Partially Threaded
Minimum Thread Length: 7⁄8 in
Head Width: 1⁄2 in
Head Height: 13⁄64 in
Pack Qty: 10
System of Measurement: Imperial
Specifications Met: ASTM F593; ASME B18.2.1
Head Style: Hex
Minimum Tensile Strength: 100,000 psi
Overall Length: 4.703125 in
RoHS Compliant: Yes
Rockwell Hardness: B80
Screw Size: 5/16 in
Thread Direction: Right Hand
Thread Type: UNC

Compliance and Restrictions

Country Of Origin

  • Varies

About This Product

These 18-8 Stainless Steel Hex Cap Screws are constructed of 18-8 stainless steel, which provides corrosion resistance, includes grades 302 and 304 stainless steel, is the most common choice for stainless steel, and may be mildly magnetic. They have a 5/16"-18 thread size and a 4 1/2 in shank length. They are partially threaded, which is a shaft style where the thread runs from the tip of the fastener to the unthreaded portion, known as the grip length, to provide better alignment and excellent shear resistance to provide enough force to hold objects in place. They have a 7/8 in minimum thread length and a 1/2 in head width. They also have a 13/64 in head height. Pack of 10.

About Hex Cap Screws

Also called hex head cap screws, these fasteners have a six-sided head with a wide underside to spread loads evenly across surfaces.

Stainless steel has a naturally corrosion-resistant surface that continues to protect the material from environmental contaminants even if scratched. It may be magnetic.