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PROTO Flex Socket: 1/4 in Drive Size, 11/32 in Socket Size, 12-Point, Std - 1/4" Drive SAE Flex Sockets
PROTO1/4" Drive SAE Flex Sockets

PROTO Flex Socket: 1/4 in Drive Size, 11/32 in Socket Size, 12-Point, Std

The PROTO Flex Socket (MPN J4778TA) is a 1/4" Drive SAE Flex Socket with an 11/32" socket size and 12-point standard configuration. It features a chrome finish and is not tether capable.

SKU 3G-OTH-307922

Brand
PROTO
Item
Flex Socket: 1/4 in Drive Size, 11/32 in Socket Size, 12-Point, Std
Category
1/4" Drive SAE Flex Sockets
Available to Order
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

PROTO
Manufacturer Part Number
J4778TA
Type
12-Point, Std, Chrome
Socket Size
11/32 in

Technical Documents

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PROTO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO Flex Socket (MPN J4778TA) is a 1/4" Drive SAE Flex Socket with an 11/32" socket size and 12-point standard configuration. It features a chrome finish and is not tether capable.

Frequently Asked Questions

What is the PROTO Flex Socket J4778TA used for?

The PROTO Flex Socket J4778TA is used for turning fasteners in tight or angled spaces where a standard socket cannot reach. Its 1/4" drive and 11/32" 12-point design suits automotive, industrial, and maintenance applications requiring precise torque on SAE fasteners.

What are the specifications of the PROTO Flex Socket J4778TA?

The PROTO Flex Socket J4778TA has a 1/4" drive size, 11/32" socket size, 12-point standard configuration, and a chrome finish. It is not tether capable. The manufacturer part number is J4778TA, and it is made by PROTO.

Where to buy the PROTO Flex Socket J4778TA worldwide?

You can source the PROTO Flex Socket J4778TA worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct PROTO Flex Socket size?

To select the correct PROTO Flex Socket, match the drive size (1/4") to your ratchet or tool, and the socket size (11/32") to the fastener head. Ensure the point configuration (12-point) fits the fastener type. For tight spaces, the flex feature allows angle adjustments.

Used in

Common applications for PROTO
Automotive assembly — PROTO J72102 impact socket set for fastening lug nuts on production lines
Heavy equipment maintenance — PROTO J3772T flare nut wrench for hydraulic line fittings on excavators
General industrial repair — PROTO J795SA adjustable wrench set for tightening bolts on conveyor systems
Aerospace manufacturing — PROTO J5240A slotted bit socket for adjusting fasteners in confined spaces
Oil and gas pipeline work — PROTO J5438 12-point socket for valve assembly in refineries
Construction site toolkits — PROTO J8179-T500 double box wrench for structural steel bolting

PROTO Products

3G Electric supplies PROTO 1/4" drive sae flex sockets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
PROTO Flex Socket: 1/4 in Drive Size, 3/8 in Socket Size, 12-Point, Std, Chrome, Not Tether Capable (MPN J4773TA)
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PROTO Flex Socket: 1/4 in Drive Size, 3/8 in Socket Size, 12-Point, Std, Chrome, Not Tether Capable (MPN J4773TA)
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PROTO Flex Socket: 1/4 in Drive Size, 7/32 in Socket Size, 12-Point, Std, Chrome, Not Tether Capable (MPN J4770TA)
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PROTO Flex Socket: 1/4 in Drive Size, 5/16 in Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J4772A)
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PROTO Flex Socket: 1/4 in Drive Size, 1/4 in Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J4771A)

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