Clear All
System of Measurement System of Measurement |
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Material Material |
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Size Size | Show |
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Size Size | Hide |
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Socket Type Socket Type |
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![]() | Socket |
For Drive Style For Drive Style |
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Bolt Clearance Style Bolt Clearance Style |
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![]() | Standard |
Socket Shape Socket Shape |
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![]() | Tri-Groove |
For Nut Diameter For Nut Diameter |
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Socket Style Socket Style |
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![]() | Standard |
Drive Type Drive Type |
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For Fastener Type For Fastener Type |
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Individual/Set Individual/Set |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Finish Finish |
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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 Nut Size (Dia.) | Material | Finish | Each | |
3/8" Square Drive | ||||||||
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No. 30 | 1 1/2" | 31/32" | Nuts | 3/8", 5/16" (0.864") | Steel | Black Oxide | 0000000 | 000000 |