Flange bolts, Partial thread, Grade 8 steel plain finish, 5/16"-18 x 2-1/2"

These bolts are all partially threaded. Shorter lengths are found with full thread.
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Product details | |
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Bolt Depot product# | 17251 |
Units | US |
Category | Flange bolts |
Head style | Hex flange |
Drive type | External hex |
Dimensional standard | IFI-111 (2002) |
Fully threaded | No |
Serrated | No |
Material | Steel |
Grade | Grade 8 |
Finish | Plain |
Thread density | Coarse |
Diameter | 5/16" |
Thread count | 18 |
Length | 2-1/2" |
Thread direction | Right hand |
Flange diameter | Maximum 0.680" |
Flange height | Minimum 0.050" |
Thread length | 7/8" |
Body length | Minimum 1.208" |
Width across the flats | 1/2" |
Head height | Maximum 0.320" |
See also |
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![]() Flange bolts, Full thread, Grade 8 steel plain finish, 5/16"-18Full thread, including shorter lengths. |
![]() Metric flange boltsFlange bolts have a flange on the bottom of the head that distributes the load like a washer. |