Impact Socket 12-Point 18mm 1/2-Inch Drive, Chromium-Molybdenum
Heavy-duty 18mm impact socket with 12-point geometry, 1/2-inch square drive, designed for pneumatic impact wrenches.
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Impact Socket 12-Point 18mm 1/2-Inch Drive
Brief Overview
This 18mm impact socket is purpose-built for high-torque pneumatic impact wrench applications. The 12-point internal geometry distributes force evenly across fastener flats, reducing cam-out and fastener rounding—critical for maintaining fastener integrity on automotive and industrial assembly work. Constructed from chromium-molybdenum steel with reinforced wall thickness, it withstands repeated shock loads that would damage standard sockets. The 1/2-inch square drive couples directly to professional-grade pneumatic impact tools. Part of a broader ecosystem: complement this with smaller-capacity impact sockets for precision work, or pair it with larger 30mm impact sockets for demanding heavy-duty fastening.
Key Features
- 12-Point Drive Geometry: Reduces rounding and cam-out on hex fasteners; distributes load more evenly than 6-point sockets.
- Chromium-Molybdenum Construction: Enhanced hardness and shock absorption; built to absorb repeated impact blows from pneumatic tools.
- Reinforced Wall Thickness: 9mm wall thickness (D1 = 28mm, D2 = 28mm) provides durability under sustained high-torque cycles.
- 1/2-Inch Square Drive: Industry-standard drive size; compatible with all 1/2-inch pneumatic impact wrenches.
- Retaining Pin Hole: Integrated detent hole secures socket to the drive spindle, preventing accidental ejection during operation.
- Matte Impact-Tool Finish: Protective dark coating resists corrosion and provides a professional appearance.
- 78mm Length: Optimal working length for accessibility on typical automotive and industrial fasteners.
Business Advantages for Resellers
- High-Margin Consumable Category: Impact sockets experience regular wear and replacement; repeat purchase cycles drive steady turnover.
- Essential Accessory Upsell: Any shop purchasing an impact wrench needs a full socket set. Stock multiple sizes to capture complete transactions.
- Professional Tool Reputation: Chromium-molybdenum construction signals quality to end users; justifies premium pricing versus cheaper alternative materials.
- OEM/Fleet Market Opportunity: Automotive shops and fleet maintenance operations replace sockets regularly; establish yourself as a reliable bulk supplier.
- Cross-Sell Potential: This 18mm size fits common automotive fasteners (wheel hubs, transmission bolts, suspension). Bundle with complementary sizes to increase average order value.
Technical Specifications
| Specification | Value |
|---|---|
| Socket Size | 18mm |
| Drive Type | 1/2-inch square drive |
| Point Count | 12-point |
| Material | Chromium-Molybdenum Steel |
| Overall Length | 78mm |
| Outer Diameter (D1) | 28mm |
| Drive Recess Diameter (D2) | 28mm |
| Wall Thickness (T) | 9mm |
| Product Code | 544618P |
| Finish | Matte impact-tool black |
| Retaining Pin | Yes (integrated detent hole) |
Application Context
This 18mm socket is ideally suited for:
- Automotive Assembly: Wheel bearing fasteners, transmission pan bolts, suspension components.
- Engine Work: Water pump bolts, alternator fasteners, engine block connections.
- Industrial Maintenance: Machinery assembly, structural fastening, repetitive high-torque operations.
- Fleet Maintenance: Heavy-volume replacement socket for shops servicing commercial vehicles.
Why 12-Point Geometry Matters
The 12-point design contacts fastener flats at two points per flat (compared to one point per flat on 6-point sockets). This dual-contact geometry:
- Reduces rotational stress concentration on fastener corners.
- Minimizes the risk of rounding fastener heads during high-speed impact cycles.
- Provides faster engagement and disengagement on repetitive fastening tasks.
- Allows for slight angulation without complete socket slip.
For precision fastening or recovery of already-damaged fasteners, the 12-point geometry is superior to 6-point alternatives.
Stock Recommendation
18mm is a high-frequency fastener size across automotive and industrial applications. Recommend maintaining robust inventory for immediate availability. Pair with complementary 12mm sockets and 21mm impact sockets to offer customers a complete mid-range set, maximizing per-order revenue.
Ready to maximize shop floor efficiency and customer retention? Stock this professional-grade impact socket as a cornerstone of your tool inventory. Bulk orders welcome.