5/16"-18 Hex Tap Bolt 18-8 Stainless Steel

5/16"-18 Stainless Steel Hex Tap Bolts

Diameter - Thread Pitch: 5/16" - 18


  • 5/16"-18
  • Hexagon head designed to be driven by a wrench or socket
  • tap bolts differ from hex cap screws due to variations of threading at larger sizes
  • 18-8 Stainless steel tap screws offer protection from weather and corrosive environments
  • Rust resistant in fresh water environments
  • For salt water environments use the 316 stainless steel version

Diameter x Thread Pitch x Length from Under Head

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Product Specifications
Across Flats (Width)
1/2", Max 0.500 - Min 0.489
ANSI
B18.2.1
Body Diameter
5/16" (Max 0.3113 - Min 0.3026)
Color
Silver
Corrosion Resistant
Yes
Diameter
5/16"
Drive Style
External Hex
Elongation
30%
FT = Full Thread
Yes
Hardness
100 Rockwell B
Head Height Max
0.211
Head Style
Hex
Material
Stainless Steel 18-8
Overall Head Height
Max 0.211 - Min 0.195
Product Type
Hex Tap Bolts
Reduction
40%
Standards Met
ANSI B18.2.1
Tensile PSI
100,000 - 125,000
Thread Direction
Right Hand
Thread Pitch (Count)
18
Thread Standard
UNC
Thread Type
Coarse
Threaded Length
Fully Threaded
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Wrench Size
1/2"
Yield PSI
55,000 - 75,000
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