Armstrong® MAXX™ 20-574 Standard Length Universal Socket, 1/2 in Square Drive, 3/4 in, 6 Points
Armstrong® MAXX™ 20-574 Standard Length Universal Socket, 1/2 in Square Drive, 3/4 in, 6 Points
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BrandArmstrong®
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UPC781412205749
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Manufacturer Part Number20-574
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CountryUSA
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FinishBlack Oxide
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MaterialHigh Alloy Steel
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Measurement SystemImperial
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TypeStandard Length Universal
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Impact RatedYes
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Number of Points6
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Socket End Width1.062 in
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Socket Size3/4 in
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Opening Depth1.031 in
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Drive End Width1.219 in
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Drive Size1/2 in
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Drive TypeSquare
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Bolt Clearance Depth1.031 in
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Overall Length3-1/8 in
- Unique pinless "4 lug" design for strength, durability and safety
- True 360 deg rotation of the socket end for extended range of motion and smooth operation
- Reversed ball design allows for a smaller socket end for access to restricted fasteners
- Maximum operation angle of 30 deg
- Radius corner design engages the flats of the fastener, not the corners, providing up-to 15 to 20% more torque while reducing fastener rounding, enhancing the turning of worn fasteners
- EYE-D™ markings optimize size visibility, also providing SAE/metric differentiation
- Socket wall dimensions are optimized to provide strength while retaining access to restricted fasteners
- Manufactured from high alloy steel using the most up-to-date manufacturing process and heat treat for greater strength and durability
| Competitor Name | Cross-Reference Number |
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| MSC | 93606978 |
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UNSPSC27112828
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Package Description1/SHELF PK
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Standards/ApprovalsASME B107.2-2002|US Federal Spec GGG-W-660A
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The Grey Pneumatic 1125TT 3/8 Inch TT25 Tamper Proof Star Driver is a robust and essential tool engineered for professional technicians and mechanics tackling specialized fasteners. Designed for precision and durability, this driver ensures secure engagement and efficient manipulation of tamper-proof TT25 star fasteners, making it indispensable for critical automotive and industrial applications.
Key Features
Professional-Grade Construction: Manufactured by Grey Pneumatic, known for producing high-quality automotive and industrial tools, this driver is built to withstand demanding shop environments and frequent use.
Tamper-Proof Design: Specifically engineered to fit TT25 tamper-proof (security) star fasteners, allowing for safe and proper servicing of components that require restricted access.
3/8-Inch Drive: Compatible with standard 3/8-inch drive ratchets, extensions, and impact wrenches, offering versatility and broad integration with existing tool sets.
Precise TT25 Star Profile: Ensures a snug, non-slip fit, minimizing the risk of cam-out and fastener damage, which is crucial for sensitive and costly components.
Impact-Ready Durability: Constructed to endure the high torque and stress associated with impact applications, providing reliable performance in tough conditions.


