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For Drive Style For Drive Style |
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Phillips | Pozidriv® | Tri- Groove |
Socket Type Socket Type |
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![]() | Socket |
Socket Shape Socket Shape |
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![]() | Tri-Groove |
System of Measurement System of Measurement |
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Bolt Clearance Style Bolt Clearance Style |
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![]() | Standard |
Size Size | Show |
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Size Size | Hide |
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Number of Pieces Number of Pieces |
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Drive Type Drive Type |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Finish Finish |
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Material Material |
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For Screw Head Style For Screw Head Style |
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For Fastener Type For Fastener Type |
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Tip Style Tip Style |
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![]() | Standard |
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Tri-Groove Sockets

Square Drive

Grip the indentations around the outside of tri-groove fasteners. These sockets are for hand-driven use only.
Size | Overall Lg. | OD | For Fastener Type | For Screw Size (Head Dia.) | Material | Finish | Each | |
1/4" Square Drive | ||||||||
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No. 4 | 1" | 31/64" | Screws | No. 4 Standard (0.13") No. 6 Countersunk (0.268") | Steel | Black Oxide | 0000000 | 000000 |
Phillips Bit Sockets


For technical drawings and 3-D models, click on a part number.
Pozidriv® Bit Sockets


For technical drawings and 3-D models, click on a part number.
Size | Overall Lg. | Material | Bit Replaceable | Specifications Met | Each | |
1/2" Square Drive | ||||||
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No. 4 | 2 3/8" | Chrome-Plated Steel | No | ISO 1174, ISO 8764-1 | 00000000 | 000000 |
Tri-Groove Socket Sets


Grip the indentations around the outside of tri-groove fasteners.
No. of Pieces | Components Included | Includes | Finish | Each | |
1/4" Square Drive—Steel | |||||
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4 | 3 Sockets 1 Drive Tool | Standard Socket: No. 4 (For No. 4 Standard Screws and No. 6 Countersunk Screws) Standard Socket: No. 6 (For Nos. 6 and 8 Standard Screws and Nos. 8 and 10 Countersunk Screws) Standard Socket: No. 10 (For Nos. 10, 12, and 1/4" Standard Screws; 1/4" Countersunk Screws; and Nos. 6 and 8 Nuts) 8" Long Socket Screwdiver Handle | Black Oxide | 0000000 | 000000 |