PROTO Socket Bit Set: 1 - 25 Pieces, 3/8 in Drive Size, 7 Pieces
The PROTO Socket Bit Set (SKU 3G-OTH-310728, MPN J4990-SMA) is a 25-piece hex bit socket set with a 3/8 in drive size and a tip size range of 4 mm to 10 mm. It features a fixed insert design and is manufactured by PROTO.
SKU 3G-OTH-310728
Also listed as: J4990SMA · J4990 SMA
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.
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Product Description
The PROTO Socket Bit Set (SKU 3G-OTH-310728, MPN J4990-SMA) is a 25-piece hex bit socket set with a 3/8 in drive size and a tip size range of 4 mm to 10 mm. It features a fixed insert design and is manufactured by PROTO.
Frequently Asked Questions
What is the PROTO J4990-SMA socket bit set used for?
The PROTO J4990-SMA socket bit set is used for driving hex fasteners in industrial assembly, maintenance, and repair tasks. It is suitable for automotive, manufacturing, and mechanical applications where precise torque and secure bit retention are required.
What are the specifications of the PROTO J4990-SMA socket bit set?
The PROTO J4990-SMA is a 25-piece hex bit socket set with a 3/8 in drive size and a tip size range of 4 mm to 10 mm. It includes 7 pieces and features a fixed insert design. The manufacturer part number is J4990-SMA.
Where to buy the PROTO J4990-SMA socket bit set worldwide?
You can source the PROTO J4990-SMA socket bit set worldwide through 3G Electric. We handle full logistics, customs clearance, and delivery to global destinations as an industrial equipment supplier. Contact us for availability and lead times.
How to select the correct PROTO socket bit set for your application?
To select the correct PROTO socket bit set, match the drive size (e.g., 3/8 in) and tip size range (e.g., 4 mm to 10 mm) to your fasteners. Consider the bit type—fixed insert for high-torque applications. PROTO sets are designed for professional use in demanding environments.
Used in
Common applications for PROTOPROTO Products
3G Electric supplies PROTO hex bit socket sets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
