Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

PROTO JCS-MAS-7A Master Set, 214 Pieces, Metric/SAE, 1/2 in and 3/8 in Drive - Tool Only Sets
PROTOTool Only Sets

PROTO JCS-MAS-7A Master Set, 214 Pieces, Metric/SAE, 1/2 in and 3/8 in Drive

The PROTO Master Set (SKU JCS-MAS-7A, MPN JCS-MAS-7A) is a tool-only set comprising 214 total pieces in Metric and SAE sizes with 1/2 in and 3/8 in socket drive sizes. This set includes (6) assorted mini pliers, (17)…

SKU 3G-OTH-267192

Also listed as: JCSMAS7A · JCS MAS 7A

Brand
PROTO
Item
JCS-MAS-7A Master Set, 214 Pieces, Metric/SAE, 1/2 in and 3/8 in Drive
Category
Tool Only Sets
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

PROTO
Manufacturer Part Number
JCS-MAS-7A

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The PROTO Master Set (SKU JCS-MAS-7A, MPN JCS-MAS-7A) is a tool-only set comprising 214 total pieces in Metric and SAE sizes with 1/2 in and 3/8 in socket drive sizes. This set includes (6) assorted mini pliers, (17) T-handle hex keys, (2) drive tools, and (25) angle open-end wrenches.

Frequently Asked Questions

What is the PROTO Master Set JCS-MAS-7A used for?

The PROTO Master Set JCS-MAS-7A is used for professional mechanical assembly, maintenance, and repair tasks across automotive, industrial, and manufacturing sectors. It provides 214 pieces including Metric/SAE sockets, mini pliers, T-handle hex keys, drive tools, and angle open-end wrenches for versatile fastening and turning applications.

What are the specifications of the PROTO Master Set JCS-MAS-7A?

The PROTO Master Set (SKU JCS-MAS-7A, MPN JCS-MAS-7A) includes 214 total pieces in Metric and SAE sizes with 1/2 in and 3/8 in socket drive sizes. It contains (6) assorted mini pliers, (17) T-handle hex keys, (2) drive tools, and (25) angle open-end wrenches. This is a tool-only set from PROTO.

Where to buy the PROTO Master Set JCS-MAS-7A worldwide?

You can source the PROTO Master Set JCS-MAS-7A through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this PROTO tool set.

How to select the right PROTO Master Set for automotive work?

To select the right PROTO Master Set, consider the socket drive sizes and fastener types you encounter. The JCS-MAS-7A offers both 1/2 in and 3/8 in drives with Metric and SAE sizes, plus mini pliers, hex keys, and angle wrenches. This combination covers most automotive and industrial repair needs.

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 tool only sets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
This 10-piece SAE 6-point combination wrench set includes sizes from 7/16 in to 1 in. The wrenches are constructed from alloy steel with a chrome finish for corrosion resistance. A canvas pouch is included for organized storage. Suitable for tightening and loosening fasteners in automotive, industrial, and mechanical applications
PROTO
This 10-piece SAE 6-point combination wrench set includes sizes from 7/16 in to 1 in. The wrenches are constructed from alloy steel with a chrome finish for corrosion resistance. A canvas pouch is included for organized storage. Suitable for tightening and loosening fasteners in automotive, industrial, and mechanical applications
This 15-piece metric combination wrench set from PROTO covers sizes from 7 mm to 21 mm. Each wrench features a 12-point box end and an open end, with a satin finish on alloy steel. The set is supplied in a canvas pouch for storage and portability. Suitable for tightening and loosening fasteners in mechanical assembly and repair tasks
PROTO
This 15-piece metric combination wrench set from PROTO covers sizes from 7 mm to 21 mm. Each wrench features a 12-point box end and an open end, with a satin finish on alloy steel. The set is supplied in a canvas pouch for storage and portability. Suitable for tightening and loosening fasteners in mechanical assembly and repair tasks
This 10-piece metric combination wrench set features 12-point openings for improved grip on hex fasteners. Made from alloy steel with a satin finish, the wrenches cover sizes from 10 mm to 19 mm. Suitable for tightening and loosening metric bolts and nuts in mechanical assembly and maintenance tasks. Includes a canvas pouch for storage
PROTO
This 10-piece metric combination wrench set features 12-point openings for improved grip on hex fasteners. Made from alloy steel with a satin finish, the wrenches cover sizes from 10 mm to 19 mm. Suitable for tightening and loosening metric bolts and nuts in mechanical assembly and maintenance tasks. Includes a canvas pouch for storage
This 15-piece metric combination wrench set from PROTO features 12-point openings for improved grip on hex fasteners. The satin finish provides corrosion resistance. Wrenches range from 7 mm to 32 mm and are stored in a canvas pouch. Suitable for tightening and loosening metric fasteners in industrial maintenance, automotive repair, and mechanical assembly
PROTO
This 15-piece metric combination wrench set from PROTO features 12-point openings for improved grip on hex fasteners. The satin finish provides corrosion resistance. Wrenches range from 7 mm to 32 mm and are stored in a canvas pouch. Suitable for tightening and loosening metric fasteners in industrial maintenance, automotive repair, and mechanical assembly
This 13-piece metric wrench set includes sizes from 7 mm to 19 mm, each with a 12-point ratcheting box end for faster fastener turning in confined spaces. The wrenches are constructed from alloy steel with a chrome finish and come organized in a tool roll for storage. Suitable for general maintenance and repair tasks on machinery and equipment
PROTO
This 13-piece metric wrench set includes sizes from 7 mm to 19 mm, each with a 12-point ratcheting box end for faster fastener turning in confined spaces. The wrenches are constructed from alloy steel with a chrome finish and come organized in a tool roll for storage. Suitable for general maintenance and repair tasks on machinery and equipment
This 14-piece SAE 12-point ratcheting combination wrench set includes sizes from 1/4 in to 1 in. The wrenches are made of alloy steel with a chrome finish and feature a 12-point ratcheting box end for faster fastener engagement in confined spaces. Suitable for general bolting tasks in maintenance and repair applications
PROTO
This 14-piece SAE 12-point ratcheting combination wrench set includes sizes from 1/4 in to 1 in. The wrenches are made of alloy steel with a chrome finish and feature a 12-point ratcheting box end for faster fastener engagement in confined spaces. Suitable for general bolting tasks in maintenance and repair applications

More from PROTO

View all PROTO parts
PROTO
PROTO
This 649-piece tool set includes sockets, wrenches, pliers, screwdrivers, and pipe wrenches in both Metric and SAE sizes. It features 1/2 in, 1/4 in, and 3/8 in socket drive sizes, suitable for a wide range of fastening and adjustment tasks in industrial maintenance and repair
PROTO
PROTO
This tool-only set includes 1,398 pieces in Metric and SAE sizes with socket drive sizes of 1/2 in, 1/4 in, 3/4 in, and 3/8 in. The set contains a duck bill plier, 19 nut drivers, a drag link socket, and 6 double box wrenches. Suitable for fastening, wrenching, and plier tasks in industrial maintenance and repair
This 215-piece tool-only set includes 98 impact sockets and 10 ratcheting double box wrenches in both Metric and SAE sizes. Sockets feature 1/2 in and 3/8 in drives. Suitable for heavy-duty fastening and loosening in industrial maintenance, automotive repair, and assembly
PROTO
This 215-piece tool-only set includes 98 impact sockets and 10 ratcheting double box wrenches in both Metric and SAE sizes. Sockets feature 1/2 in and 3/8 in drives. Suitable for heavy-duty fastening and loosening in industrial maintenance, automotive repair, and assembly
This 453-piece tool-only set includes socket bits, open end wrenches, retaining-ring pliers, and screw starters in SAE sizing. Socket drive sizes are 1/4 in, 3/8 in, 1/2 in, and 3/4 in. Suitable for industrial maintenance, repair, and assembly tasks
PROTO
This 453-piece tool-only set includes socket bits, open end wrenches, retaining-ring pliers, and screw starters in SAE sizing. Socket drive sizes are 1/4 in, 3/8 in, 1/2 in, and 3/4 in. Suitable for industrial maintenance, repair, and assembly tasks
This 164-piece SAE master tool set includes 63 sockets, 16 combination wrenches, 6 Phillips screwdrivers, and 2 groove pliers. Socket drive sizes are 1/4 in, 3/8 in, 1/2 in, and 3/4 in. Suitable for maintenance, repair, and assembly tasks in industrial settings
PROTO
This 164-piece SAE master tool set includes 63 sockets, 16 combination wrenches, 6 Phillips screwdrivers, and 2 groove pliers. Socket drive sizes are 1/4 in, 3/8 in, 1/2 in, and 3/4 in. Suitable for maintenance, repair, and assembly tasks in industrial settings
PROTO
PROTO
This 206-piece tool-only set includes Metric/SAE sockets with 1/2 in and 3/4 in drive sizes, specialty pliers, a screw starter, 28 socket bits, and 8 specialty wrenches. Suitable for industrial maintenance, repair, and assembly tasks requiring heavy-duty mechanical work
This 98-piece tool set includes lineman's pliers, six Phillips screwdrivers, one 3/8 in drive tool, and 15 combination wrenches. The set provides both Metric and SAE sizing for general maintenance tasks in industrial plants, repair shops, and commercial buildings
PROTO
This 98-piece tool set includes lineman's pliers, six Phillips screwdrivers, one 3/8 in drive tool, and 15 combination wrenches. The set provides both Metric and SAE sizing for general maintenance tasks in industrial plants, repair shops, and commercial buildings
This 1,398-piece tool set includes Metric and SAE sockets with 1/2 in, 1/4 in, 3/4 in, and 3/8 in drive sizes. The set also contains 2 needle nose pliers, 19 nut drivers, 14 Torx bit sockets, and 7 flex combo wrenches. Suitable for maintenance, repair, and assembly tasks in industrial settings
PROTO
This 1,398-piece tool set includes Metric and SAE sockets with 1/2 in, 1/4 in, 3/4 in, and 3/8 in drive sizes. The set also contains 2 needle nose pliers, 19 nut drivers, 14 Torx bit sockets, and 7 flex combo wrenches. Suitable for maintenance, repair, and assembly tasks in industrial settings