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JACK® JK-8740C-460-02-D-A W2S 4-Needle 6-Thread Industrial Flatseamer Sewing Machine
The JACK® JK-8740C-460-02-D-A W2S is a specialized industrial flatseamer sewing machine designed for professional garment manufacturing and the production of flat, comfortable seams.
Featuring a four-needle, six-thread stitching configuration, this machine is designed to join fabric panels while producing a low-profile seam suitable for garments that require comfort, flexibility, and reduced seam bulk.
Flatseaming is especially useful in activewear, sportswear, underwear, compression garments, and other stretch-fabric applications where traditional raised seams may cause discomfort or unnecessary bulk.
The JACK 8740C series is intended for professional sewing environments that require consistent seam formation, efficient fabric handling, and specialized garment construction.
FULLY ASSEMBLED | TABLE, MOTOR & STAND INCLUDED
Professionally assembled, adjusted, and sewing-tested by JMJ Sewing Machines before delivery.
Key Features
- 4-Needle, 6-Thread Configuration: Designed to produce specialized flatseam stitching using four needles and six threads.
- Flatseamer Stitch Formation: Creates low-profile seams that help reduce bulk where fabric panels are joined together.
- Professional Stretch-Fabric Sewing: Suitable for garment applications requiring flexible seams and comfortable fabric construction.
- Specialized Fabric Joining: Designed for joining fabric edges in applications where a flatter seam profile is preferred.
- Multi-Thread Stitch Construction: The six-thread configuration provides the stitch structure required for professional flatseaming.
- Industrial Sewing Construction: Built for professional garment production environments.
- Reduced Seam Bulk: Flatseam construction helps minimize raised seam allowances in finished garments.
- Garment Comfort: The low-profile seam design is particularly beneficial for clothing worn close to the body.
- Professional Production Capability: Suitable for manufacturing operations that require repeated flatseaming of garment panels.
- Specialized W2S Configuration: Identifies the supplied machine configuration within the JK-8740C series.
Applications
The JACK® JK-8740C-460-02-D-A W2S is recommended for garment manufacturers working with stretch fabrics and products requiring low-profile seams.
- Sportswear manufacturing
- Activewear and athletic clothing
- Compression garments
- Underwear and intimate apparel
- Swimwear production
- Yoga and fitness clothing
- Stretch-fabric garments
- Performance apparel
- Base layers and close-fitting clothing
- Professional flatseam garment construction
Professional Flatseam Construction
The four-needle, six-thread stitching system is designed for manufacturing garments that require comfortable, flexible, and low-profile seams.
This specialized construction makes the JACK JK-8740C an excellent option for garment manufacturers producing performance apparel and stretch-fabric clothing.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | JACK® |
| Model | JK-8740C-460-02-D-A W2S |
| Machine Type | Industrial Flatseamer Sewing Machine |
| Stitch Configuration | 4-Needle, 6-Thread Flatseam |
| Number of Needles | 4 |
| Number of Threads | 6 |
| Primary Application | Flatseam Fabric Joining |
| Recommended Materials | Stretch and Knit Fabrics |
| Needle System | Subject to exact subclass verification |
| Needle Gauge | Subject to exact subclass verification |
| Maximum Sewing Speed | Subject to exact subclass verification |
| Stitch Length | Subject to exact subclass verification |
| Motor Type | Industrial Sewing Machine Motor |
| Motor Power | Subject to supplied motor specifications |
| Rated Voltage | 110V |
| Machine Configuration | Complete with Table & Stand |
| Production Category | Industrial Garment Manufacturing |
Included with the Machine
- JACK® JK-8740C-460-02-D-A W2S Industrial Flatseamer Machine Head
- Industrial Sewing Machine Motor
- Industrial Sewing Machine Table
- Heavy-Duty Metal Stand
- Standard Manufacturer-Supplied Accessories
Complete Industrial Sewing Setup
Your machine is professionally assembled, adjusted, inspected, and prepared by JMJ Sewing Machines before delivery.
JMJ Quality Inspection
At JMJ Sewing Machines, we understand the importance of dependable sewing equipment for professional garment manufacturing.
Before delivery, our quality inspection process includes, as applicable:
- Inspection for visible defects
- Verification of machine operation
- Mechanical adjustments and calibration
- Inspection of relevant sewing components
- Verification of needle and thread operation
- Flatseam stitch formation inspection
- Fabric feeding and seam quality testing
- Preparation before shipping or delivery
Our objective is to provide customers with carefully inspected sewing equipment prepared for professional use.
JMJ Sewing Machines Recommends
The JACK® JK-8740C-460-02-D-A W2S is recommended for garment manufacturers specializing in sportswear, activewear, compression garments, underwear, and stretch-fabric clothing.
Flatseaming is particularly useful when the finished garment requires reduced seam bulk, improved comfort, and flexible fabric joining.
JMJ Sewing Machines can assist customers in selecting appropriate industrial sewing equipment according to their materials, production volume, and garment construction needs.
Warranty & Technical Support
Warranty service and technical support are handled directly through JMJ Sewing Machines.
This industrial sewing machine includes a 12-month JMJ commercial warranty, subject to the applicable warranty terms and conditions.
For covered manufacturing defects, JMJ provides replacement parts and labor in accordance with its applicable commercial warranty.
Electrical and electronic components are subject to exclusions to the extent permitted by law.
Applicable manufacturer warranties and the purchaser's legal rights remain in effect.
Preliminary technical assistance may be available through video consultation.
Certain technical evaluations or repairs may require an in-person inspection.
Spare Parts & Accessories
JMJ Sewing Machines can assist customers with identifying compatible replacement parts and accessories for their industrial flatseamer equipment.
- Industrial sewing machine needles
- Needle clamps and needle holders
- Loopers
- Presser feet
- Needle plates
- Feed dogs
- Thread guides
- Thread tension components
- Mechanical replacement parts
- Motor and electrical components
- Additional sewing accessories
All replacement parts and accessories are subject to compatibility verification and product availability.
Important Before Ordering
Machine Configuration: This industrial sewing machine is supplied complete with its table, motor, and metal stand.
Electrical Requirements: Rated Voltage: 110V.
Machine Application: This equipment is designed for specialized flatseam garment construction. It is not intended to replace a conventional straight-stitch or standard overlock machine.
Material Compatibility: Suitability depends on fabric construction, thread selection, needle specifications, and production requirements.
Wheels: WHEELS ARE NOT INCLUDED — SOLD SEPARATELY.
Wheels shown in product photographs, when applicable, may be used for moving equipment within our showroom and are not included with the machine.
In-Store Purchases: Customers purchasing machines at our physical store receive a brief in-person explanation of basic machine controls at the time of delivery.
Shipped Orders: Shipped orders do not include in-person operator training.
Returns & Store Policies
Eligible voluntary returns may be requested within 14 calendar days, subject to JMJ Sewing Machines' applicable return conditions.
Approved voluntary returns are subject to a 20% restocking fee.
Returns involving covered defects or applicable consumer rights are handled according to the relevant warranty terms and laws.
Contact JMJ Sewing Machines
JMJ SEWING MACHINES
Industrial Sewing Machines, Spare Parts, Accessories, Repairs & Technical Support
Location: Orlando, Florida
English: 407-451-7450
Español: 321-374-2407
Website: jmjsewingmachines.com
Contact our team for assistance selecting the right industrial sewing machine for your business.