DIN915 - 40Cr (Alloy Steel) - Grade A - Grade 12.9 - Black Oxide
Product Details
Product Name: Yongjing Hexagon Socket Grub Screw (Headless Set Screw)
Technical Standard: DIN915
Product Grade: Grade A
Performance Grade: Grade 12.9
Material: 40Cr (Alloy Steel)
Surface Treatment: Black Oxide
Product Type: Hexagon Socket Headless Flat Point
Product Specifications
Detailed product specifications can be provided according to customer requirements, including thread size, length, flat point diameter and other key parameters.
Product Description
Product Overview
This product is a hexagon socket flat point set screw (grub screw) complying with DIN915 standard, manufactured from 40Cr alloy steel material and heat-treated to achieve ultra-high strength of Grade 12.9. The headless design and flat end face are suitable for occasions with strict space restrictions or requiring axial precise positioning and fixation of shaft parts. The black oxide surface provides certain rust resistance and attractive appearance.
Core Advantages
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Ultra-High Mechanical Performance: 40Cr alloy steel material achieves top-level strength of Grade 12.9 after heat treatment, with extremely strong load-bearing capacity.
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High Space Utilization: The headless design saves axial installation space, suitable for compact structures.
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Precise Positioning and Locking: The flat end face can provide a large contact area and good stopping effect, with precise and reliable positioning.
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Good Surface Protection: Black oxide treatment provides a uniform appearance and basic rust resistance.
Applicable Industries
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Precision Machinery and Molds: Used for axial precise positioning and locking of parts such as mold inserts, precision spindles, gears and timing pulleys.
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High-End Equipment Manufacturing: Fixation of transmission components in high-precision equipment such as CNC machine tools, printing machinery and textile machinery.
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Automotive Industry: Positioning and fixation of bearings and bushings inside key components such as engines, transmissions and steering systems.
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Hydraulic and Pneumatic Components: Axial stopping and adjustment of components such as cylinder pistons, valve cores and pump shafts.
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Robot Joints and Reducers: Fastening of internal parts of precision transmission mechanisms such as harmonic reducers and RV reducers.
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High-End Instruments and Meters: Precision components requiring micro-adjustment and firm locking in optical instruments and measuring equipment.
Warm Tips
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During installation, it is necessary to use a hexagon socket wrench with precise size and qualified quality, and ensure that it is screwed in to a sufficient depth.
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It is recommended to process a flat surface or dimple on the surface of the tightened part to enhance the stopping effect and prevent slipping.
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The black oxide layer has limited corrosion resistance; if used in a humid or corrosive environment, it is recommended to consult and select a coating with a higher corrosion protection level.
