DIN916 - Carbon Steel - Grade C, B, A - Grade 12.9 - Environmentally Friendly Black Oxide
Product Details
Product Name: Yongjing Hexagon Socket Set Screw (Grub Screw)
Technical Standard: DIN916
Product Grade: Grade C, Grade B, Grade A (Optional)
Performance Grade: Grade 12.9
Material: Carbon Steel
Surface Treatment: Environmentally Friendly Black Oxide
Product Type: Hexagon Socket Recessed End (Cup End)
Product Description
Product Overview
This product is a hexagon socket recessed end set screw (grub screw) complying with DIN916 standard. It is made of carbon steel and heat-treated to achieve ultra-high strength of Grade 12.9, with environmentally friendly black oxide surface treatment. Its recessed end (cup end) design provides good centering performance, suitable for occasions requiring high locking force and precise positioning. Multiple tolerance grades are available: Grade C (rough), Grade B (general), and Grade A (precision), to meet different assembly requirements for accuracy and cost.
Core Advantages
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Ultra-High Mechanical Strength: Top performance of Grade 12.9, capable of withstanding extremely high preload and anti-vibration loads.
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Precise Centering and Locking: The recessed end design helps guide and center, cooperating with the corresponding shaft end to achieve reliable locking.
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Multiple Precision Grades Optional: Grade A/B/C precision available, flexibly adapting to different requirements from general machinery to precision equipment.
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Environmentally Friendly Surface Treatment: Black oxide treatment provides a uniform black appearance, basic rust resistance and anti-friction effect, and the production process is more environmentally friendly.
Applicable Industries
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Heavy Machinery Equipment: Axial positioning and locking of high-load transmission components such as construction machinery, mining equipment, and heavy machine tools.
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Molds and Fixtures: Precision positioning requiring extremely high locking force in stamping dies, injection mold inserts, and various fixtures.
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Power Transmission Systems: Fixing of key components such as gears and timing pulleys inside reducers, gearboxes, and engines.
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Automotive Manufacturing and Maintenance: High-strength fastening and adjustment of key parts such as automotive chassis, steering systems, and engine accessories.
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Rail Transit Equipment: Fastening and anti-loosening of high-strength structural parts in non-running parts of rolling stock and track equipment.
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High-End General Machinery: Adjustment and stop points requiring high reliability in equipment such as printing machinery, packaging machinery, and textile machinery.
Warm Tips
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Please select the appropriate precision grade (Grade A/B/C) according to the assembly accuracy requirements (such as thread tolerance, centering performance).
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During installation, use a hexagon socket wrench with accurate size and qualified quality, and apply the specified torque to give full play to its performance.
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The corrosion resistance of the environmentally friendly black oxide layer is limited, which is mainly suitable for dry or slightly humid indoor environments. If used outdoors or in corrosive environments, it is recommended to consult for higher-level protective coatings.
