ASME/ANSI B18.2.2 - 303 Stainless Steel - Grade A - Natural Color
Product Details
Product Name: Yongjing Four-Hole Anti-Theft Nut
Technical Standard: ASME/ANSI B18.2.2
Product Grade: Grade A
Material: 303 Stainless Steel
Surface Treatment: Natural Color
Product Type: Anti-Theft Nut
Product Description
Product Overview
This product is a four-hole anti-theft nut complying with ASME/ANSI B18.2.2 standard, manufactured from 303 stainless steel material with a natural surface. Its design feature is that there are four asymmetric special holes and grooves on the end face or side of the nut, and only a dedicated four-hole matching key can be used for installation and disassembly. This design provides effective anti-disassembly and anti-theft functions, preventing being turned by general tools (such as wrenches, sockets), and is suitable for public facilities and safety-critical structures that require restricting unauthorized disassembly.
Core Advantages
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High Security and Anti-Theft: The unique four-hole design cannot be disassembled with standard tools, effectively preventing unauthorized disassembly and damage.
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Special Tool Matching: Only the supporting dedicated four-hole key can be used for operation, enhancing controllability.
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Durable and Corrosion-Resistant: 303 stainless steel material provides good mechanical properties and corrosion resistance, suitable for outdoor environments.
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Standardized Interface: Complying with ASME/ANSI standards, ensuring universal interchangeability and reliable connection with corresponding bolts.
Applicable Industries
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Public Infrastructure: Fastening and anti-theft of road guardrails, traffic signal poles, street lamps, bridge inspection covers, and municipal manhole covers.
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Power and Communication Facilities: Anti-disassembly protection of outdoor key equipment such as power towers, transformers, communication base station antennas, and cable junction boxes.
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Rail Transit Systems: Anti-theft fastening of railway line facilities such as rail fasteners, signal equipment boxes, and catenary pillar foundations.
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Oilfield and Mining Equipment: Anti-damage connection of unattended equipment such as outdoor Christmas trees, valves, measuring instruments, and mining machinery.
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Sharing Economy and Outdoor Assets: Anti-disassembly fixation of public assets such as shared bicycles, charging piles, outdoor billboards, and vending machines.
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Industrial Safety Areas: Occasions that require restricted access such as guardrails in dangerous areas of factories, high-voltage electrical cabinet locks, and safety signs.
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Military and Confidential Facilities: Non-core structural connections that require special security levels such as military camp peripheral facilities and confidential communication equipment boxes.
Warm Tips
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Please be sure to keep the supporting dedicated disassembly key properly, and it is recommended to establish a strict key management and collection system.
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During installation, ensure that the dedicated key is fully engaged with the nut holes and grooves before applying torque to avoid damaging the key or the nut.
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After long-term outdoor use, a natural oxide layer may form on the surface of stainless steel, which is a normal phenomenon and does not affect the corrosion resistance.
