7/8"-9 x 8" Hex Cap Screws, Partial Thread / Medium Carbon Steel / Grade 8 / Zinc Yellow CR+6 / Import / SAE J429 Grade 8; ASME B18.2.1
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Product Description
7/8"-9 x 8" Hex Cap Screws, Partial Thread / Medium Carbon Steel / Grade 8 / Zinc Yellow CR+6 / Import / SAE J429 Grade 8; ASME B18.2.1
Specifications
| Material | Alloy Steel |
|---|---|
| Finish | Zinc Yellow |
| Grade | Grade 8 |
| Size | 7/8"-9 |
| Length | 8" |
| Head Style | Hex Head |
| Drive | External Hex |
| Thread Pitch | 9 TPI |
| Thread Class | Coarse |
| Hardness | C33 - C39 |
| Tensile Strength | 150000 |
| Standard | ASME B18.2.1 |
| RoHS Compliance | Non-Compliant |
| Measurement System | Inch |
| Head Height | 37/64" |
| Width Across Flats | 1 5/16" |
RoHS Compliant
Frequently Asked Questions
What is the difference between Grade 5 and Grade 8?
Grade 5 (medium carbon steel, 120 ksi tensile strength) is suitable for most industrial applications. Grade 8 (alloy steel, 150 ksi tensile strength) is used for high-strength applications like automotive suspension and machinery. Grade 5 hex heads have 3 radial lines; Grade 8 has 6 radial lines.
What is the difference between partial thread and full thread?
Partial thread (also called shoulder bolt or tap bolt) has an unthreaded shank for shear strength. Full thread (fully threaded cap screw) provides more clamping engagement. Standard cap screws above 6 inches long are typically partial thread.
Hex Cap Screw, Partial Thread / Grade 8 Steel / Zinc Bake
Family: 455
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Technical Specifications
Thread Size
7/8"-9
Thread Type
Coarse (UNC)
Material
Alloy Steel
Grade
Grade 8
Head Style
Hex Head
Country of Origin
Import
Thread Pitch
9 TPI
Tensile Strength
150000
Hardness
C33 - C39
SKU
455610-25