5/16-18x7/8" Stainless Steel Hex Cap Screws Bolts

Product Description

Part Number: 31C87HCSSS
Diameter/Pitch: 5/16"-18
Length Under Head: 7/8"
Grade: 18-8 (304) Stainless Steel
Finish: Plain
Thread Series: Coarse (UNC)
Threading: Fully threaded

BoltsandNuts.com

5/16-18x7/8" Stainless Steel Hex Cap Screws Bolts

SKU: 31C87HCSSS

Product Description

Part Number: 31C87HCSSS
Diameter/Pitch: 5/16"-18
Length Under Head: 7/8"
Grade: 18-8 (304) Stainless Steel
Finish: Plain
Thread Series: Coarse (UNC)
Threading: Fully threaded

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Thread Size	5/16"-18
Material	18-8 Stainless (Type 304), Condition CW
Thread Series	Coarse (UNC)
Head Marking	F593 + manufacturer ID on head
Specifications Met	ASME B18.2.1

Length	7/8"
Finish	Plain (Passivated)
Threading	Fully threaded
Thread Class	2A

Grade	18-8 Stainless
Wrench Size	0.500" (1/2")
Head Height	0.195" – 0.211"
Tensile Strength (min)	100,000 psi

Technical Drawing

Not to scale · ASME B18.2.1 · See table for exact dimensions

Technical Dimensions

Length Under Head	7/8"
Major Thread Dia.	0.312"
Head Height	0.195" – 0.211"
Width Across Flats	0.500" (1/2")
Width Across Corners	0.577" max
Threads Per Inch	18 TPI
Thread Length	Fully threaded
Thread Class	2A
Min. Tensile Strength	100,000 psi
Yield Strength	65,000 psi

Hex cap screw with a hexagonal head for external wrench engagement and a chamfered point for easier starting. The flat bearing surface distributes clamp load across the joint. Fully threaded shank, with unified coarse (UNC) threads.

Dimensions conform to ASME B18.2.1 and may vary within specified manufacturing tolerances.