Fixaball UNC 5/16" Socket Screw Countersunk High Tensile 10.9 DIN7991

For inch-threaded fastening applications, this Fixaball UNC 5/16" socket countersunk screw/bolt is supplied in high tensile Grade 'S'/10.9 steel with a self colour finish. It features a 5/16" diameter, 18 T. P. I. coarse pitch thread, and an Allen hex socket countersunk head.

Conforming to ISO 10642, B18. 3, and BS 2470, this fixing is available in a range of lengths with fully threaded and partially threaded options. Length on countersunk fasteners is measured from tip to top.

Key features

• 5/16" UNC thread
• 18 T. P. I. coarse pitch
• High tensile steel Grade 'S'/10.9
• Self colour finish
• Allen hex socket countersunk head
• Conforms to ISO 10642, B18. 3, BS 2470

Available options

• 5/16"-18x1/2" (FT)
• 5/16"-18x5/8" (FT)
• 5/16"-18x3/4" (FT)
• 5/16"-18x7/8" (FT)
• 5/16"-18x1" (FT)
• 5/16"-18x1 1/2" (FT)
• 5/16"-18x1 3/4" (FT)
• 5/16"-18x2" (PT)
• 5/16"-18x2 1/4" (PT)
• 5/16"-18x2 1/2" (PT)
• 5/16"-18x2 3/4" (PT)
• 5/16"-18x3" (PT)
• 5/16"-18x3 1/2" (PT)
• 5/16"-18x4" (PT)

Sizing

• 5/16"-18x1/2"
• 5/16"-18x5/8"
• 5/16"-18x3/4"
• 5/16"-18x7/8"
• 5/16"-18x1"
• 5/16"-18x1 1/2"
• 5/16"-18x1 3/4"
• 5/16"-18x2"
• 5/16"-18x2 1/4"
• 5/16"-18x2 1/2"
• 5/16"-18x2 3/4"
• 5/16"-18x3"
• 5/16"-18x3 1/2"
• 5/16"-18x4"

Specifications

• Thread form: UNC
• Diameter: 5/16"
• Thread pitch: 18 T. P. I.
• Head type: countersunk
• Drive type: Allen hex socket
• Material: high tensile steel (10.9)
• Finish: self colour
• Corrosion resistance: low, without further surface treatment
• Typical application: no exposure to moisture
• Typical application: often greased/oiled

Rackhams Reference : 73Y95GPK8F