• Black impact socket adapter with a hex shank base and square drive end, displayed vertically against a light gray background. The hardened steel accessory features a retaining ball on the square drive for secure socket attachment and is designed to convert a power drill or impact driver for use with sockets.
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Proto - 7/16" Hex To 1/2" Drive Adapter, 7121

Proto - 7/16" Hex To 1/2" Drive Adapter, 7121

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Proto 7121 7/16" Hex to 1/2" Square Drive Adapter

The Proto 7121 is a precision-machined extension bit adapter that converts a 7/16" hex shank to a 1/2" male square drive. One-piece construction with special heat treat delivers extended durability, while pin socket retention ensures secure fastener engagement. At 2-3/4" overall length, it's a compact, reliable adapter for utility, industrial, and field applications.

Key Features

  • Converts 7/16" hex shank to 1/2" male square drive for expanded tool compatibility
  • Pin socket retention for secure, reliable fastener engagement
  • One-piece construction with special heat treat for extended durability under demanding use
  • Precision machined tips ensure proper contact and reliable performance on fasteners
  • Compact at 2-3/4" overall length

Specifications

  • Part Number: J7121
  • Input Drive: 7/16" hex shank
  • Output Drive: 1/2" male square
  • Overall Length: 2-3/4"
  • Retention: Pin socket
  • Construction: One-piece, special heat treat

Ideal Applications

  • Adapting 7/16" hex drive tools to 1/2" square drive sockets and accessories
  • Utility and lineman field work requiring drive conversion
  • Industrial maintenance and construction applications
  • Any application requiring a compact 7/16" hex to 1/2" square drive adapter

Part Number: 7121 | Vendor: Proto

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