Hex Cap Screw, Grade 8, Alloy Steel, Zinc Finish, Fine Thread, 21/64" Head Height, 5/8" Across Flats, 7/16-20 x 4-1/2"
(Pack of
25)
SKU:858A Item#: 858A
• Most versatile, best value for standard maintenance operations
• High-strength matched component fastening system
• Fatigue/vibration-resistant UNJ thread design
• 20% higher-than-normal wrenching surface for increased safety and even distribution of torque forces
• Heat-treated, quenched and tempered
• Perma Plated for superior corrosion protection
• Proprietary head marking for improved traceability
• Trailing thread does not enter the extrusion angle
• Increased length of chamfer allows easier alignment and assembly
• Matched strength nuts, flat washers and lock nuts available
• Minimum 150,000 PSI tensile strength
• Manufactured to meet or exceed Grade 8 strength requirements
Minimum Threaded Length – Up to 6" Long: (2 x Diameter) + 1/4"; Over 6" Long: (2 x Diameter) + 1/2
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Product Description
• Most versatile, best value for standard maintenance operations• High-strength matched component fastening system
• Fatigue/vibration-resistant UNJ thread design
• 20% higher-than-normal wrenching surface for increased safety and even distribution of torque forces
• Heat-treated, quenched and tempered
• Perma Plated for superior corrosion protection
• Proprietary head marking for improved traceability
• Trailing thread does not enter the extrusion angle
• Increased length of chamfer allows easier alignment and assembly
• Matched strength nuts, flat washers and lock nuts available
• Minimum 150,000 PSI tensile strength
• Manufactured to meet or exceed Grade 8 strength requirements
Minimum Threaded Length – Up to 6" Long: (2 x Diameter) + 1/4"; Over 6" Long: (2 x Diameter) + 1/2
Technical Specifications
| Item#: | 858A |
|---|---|
| Style | Premium |
| Diameter | 7/16 " |
| Thread Pitch | 20 |
| Thread | Fine |
| Length | 4-1/2 " |
| Type | Hex Cap Screw |
| Across Flats | 5/8 " |
| Material | Alloy Steel |
| Grade | 8 |
| Finish | Bright Zinc |
| Tensile Strength | 150,000 PSI |
| Head Style | High Hex |
| Head Height | 21/64 " |
| Thread Form | UNJ |
| Thread Length | Partial |
| Thread Length Minimum | 1-1/8 " |
| UNSPSC #: | 31161501 |
| TAA Compliant: | Yes |
| Weight: | 5.5 lb |
Product Restrictions
