3-4 Thread Overlock Machine
Product Code : LSK-TT-10556
3-4 Thread Overlock Machine (SKU LSK-TT-10556) is an overlocker, or serger, that trims the fabric edge and overcasts it with three or four threads in one pass, giving a neat, stretch-friendly seam. Sewing and garment making classes use it alongside lockstitch machines. Fashion schools, training institutes, tender contractors and distributors can request it from Science Lab Supplies, whose Ambala office in India handles the quotation and dispatch.
Specifications
Every feature of this differential-feed overlocker is given its own row in the table. In short, it sews 3 or 4 thread overlock stitches at up to 1300 stitches per minute, with stitch length 0.8–4.0 mm, a retractable knife, LED lighting and a free arm or flatbed, and it takes standard sewing machine needles.
| Specification | Value |
|---|---|
| SKU | LSK-TT-10556 |
| Stitches | 3 or 4 thread, cut and sew overlock |
| Stitch length | 0.8–4.0 mm |
| Stitch width | 3.0–7.0 mm (5.0–7.0 mm also quoted) |
| Maximum sewing speed | 1300 spm |
| Feed | Differential feed |
| Presser foot pressure | Adjustable |
| Presser feet | Standard presser feet and common snap-on presser foot |
| Blind stitch foot | Finishing and hemming in one operation |
| Threading guide | 4 colour |
| Lower looper | Fast and simple threading system |
| Needles | Standard sewing machine needles |
| Knife | Retractable |
| Sewing bed | Free arm / flatbed |
| Stitch selection | Dial |
| Lighting | Bright LED |
| Quality features | Thread twist protection, needle plate separation |
| Trim trap | Catches fabric scraps; stores the foot controller |
| Foot controller | Yes |
| Storage | Built-in accessory storage |
| Build | Lightweight, compact, with carrying handle |
| Accessories | Toolkit, dust cover, instructional DVD |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the 3-4 Thread Overlock Machine
Students use the overlocker to finish raw seam allowances, sew knit seams and prepare hems, and adjusting the differential feed shows how to stop stretch or waviness on different fabrics. It suits tailoring, dress making and fashion courses and serves as vocational training equipment in garment workshops.
- ITI Sewing Technology and Dress Making trades: seam finishing and overlocking practice.
- Fashion design diplomas: finishing samples on woven and knit fabrics, including test pieces from a Fabrics Sample Pack.
- TVET garment production modules: combining lockstitch and overlock operations, then clearing thread ends on the Thread Sucking Machine.
- Blind hemming with the blind stitch foot in one operation.
Standard Scope of Supply
Each machine comes with standard presser feet, a common snap-on presser foot, a blind stitch foot, a foot controller, a toolkit, a dust cover and an instructional DVD, plus built-in accessory storage and a trim trap that also stores the foot controller between lessons.
Packing, MOQ and Lead Time
Order one overlocker for a demonstration bench or a batch for a full sewing room. We quote packing, delivery time and price for the number you need, and lockstitch or finishing machines can be added so the workshop is priced as one list.
Science Lab Supplies holds an Importer-Exporter Code and can ship to buyers in Malaysia, Peru, Egypt, Iraq, Nigeria and Kenya. Science Lab Supplies is registered for GST (GSTIN 06ADEPJ0574F2ZU). Let us know how many sewing stations you are equipping via the contact page, add the overlocker to the enquiry cart, or use the lab tender page for tender orders.
Frequently Asked Questions
What is the difference between 3-thread and 4-thread overlock?
A 3-thread stitch gives a lighter edge finish, while the 4-thread stitch adds a second needle line for a stronger seam; this machine sews both, so trainees can compare them on the same fabric.
What accessories come with the machine?
It comes with standard and snap-on presser feet, a blind stitch foot, a foot controller, a toolkit, a dust cover and an instructional DVD, with built-in storage for the accessories.
Does it need special needles?
No. It uses standard sewing machine needles, which keeps consumables simple for a training workshop and lets the same needle stock serve other sewing machines.
Who supplies the 3-4 Thread Overlock Machine?
This 3- or 4-thread overlocker is a supplied item, quoted and dispatched by Science Lab Supplies from Ambala, India. The overlocker can be quoted singly or with lockstitch, buttonhole and finishing machines when a garment training room or tender is being equipped.
Related Sewing and Finishing Equipment
Overlocking finishes seams that other machines sew. These items complete the sewing, cutting and pressing stations of a garment training room, so the full set of machines can be compared and ordered together.
- Single Needle Lockstitch Machine — for cotton, wool and chemical fibre fabrics and light leather goods.
- Double Needle Lockstitch Machine — twin-needle lockstitch with a 3/8 inch needle gauge.
- Sewing Machine — needle position adjusts left and right for decorative designs; built-in thread winder.
- Lockstitch Straight Button Hole Sewing Machine — buttonhole stitch count adjustable from 54 to 345.
- Button Attachment Sewing Machine — attaches buttons; computer control versions are available.
- Tailor Scissors — stainless steel, in 8, 9 and 10 inch sizes.
- Vacuum Ironing Table — pressing table offered in different sizes.
Browse the full Textile Technology range, the Washing Machine range for thread cleaning and pressing equipment, or all TVET lab equipment.
Last updated: 9 October 2026
