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Product Description
Part Number: 31F600HCS5Z
Diameter/Pitch: 5/16"-24
Length Under Head: 6"
Grade: Grade 5
Finish: Zinc Clear
Thread Series: Fine (UNF)
Threading: Partially threaded
Wrench Size: 1/2"
BoltsandNuts.com
5/16-24x6" Hex Cap Screws Grade 5 Bolts Zinc Clear
Product Description
Part Number: 31F600HCS5Z
Diameter/Pitch: 5/16"-24
Length Under Head: 6"
Grade: Grade 5
Finish: Zinc Clear
Thread Series: Fine (UNF)
Threading: Partially threaded
Wrench Size: 1/2"
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| Thread Size | 5/16"-24 |
| Material | Medium carbon steel, quenched and tempered |
| Thread Series | Fine (UNF) |
| Head Height | 0.195" – 0.211" |
| Tensile Strength (min) | 120,000 psi |
| Specifications Met | ASME B18.2.1, SAE J429 Grade 5 |
| Length | 6" |
| Finish | Zinc Clear |
| Threading | Partially threaded |
| Head Marking | Three radial lines on head |
| Proof Load (min) | 4,940 lbf |
| Grade | Grade 5 |
| Wrench Size | 1/2" |
| Thread Length | 0.875" min |
| Thread Class | 2A |
| Hardness | Rockwell C25–C34 |
Technical Drawing
Not to scale · ASME B18.2.1 · See table for exact dimensions
Technical Dimensions
| Length Under Head | 6" |
| 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 | 24 TPI |
| Thread Length | 0.875" min |
| Thread Class | 2A |
| Proof Load | 4,940 lbf |
| Clamp Load | 3,700 lbf |
| Min. Tensile Strength | 120,000 psi |
| Yield Strength | 92,000 psi |
| Hardness | Rockwell C25–C34 |
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. Partially threaded shank, plain under the head, with unified fine (UNF) threads.
Dimensions conform to ASME B18.2.1 and may vary within specified manufacturing tolerances.
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