Shank vs 2-Hole vs 4-Hole Buttons: Which Should You Use?
Every button is one of three constructions: shank, 2-hole or 4-hole. Choosing correctly is the difference between a coat that closes cleanly and one that puckers. Here’s how to decide in ten seconds.
Shank buttons: for thickness and for show
A shank button hides its attachment behind the face — a metal or plastic loop the thread passes through. Two consequences: the front stays a pure, uninterrupted design (why nearly all decorative and metal buttons are shanked), and the button stands off the fabric, giving thick materials room to close around it. Coats, blazers, chunky knits: shank.
2-hole buttons: light and fast
Two-hole buttons sew flush in a single bar of stitches. They’re the quick, low-profile choice for shirts, blouses and anywhere the garment is light and the button modest.
4-hole buttons: the workhorses
Four holes let you stitch a cross or two parallel bars, spreading load across more thread. Trousers, workwear, kids’ clothes, anything laundered hard — four holes outlast everything else.
The thread shank trick
Sewing a flat button onto thick fabric? Create a thread shank: hold the button a few millimetres off the cloth while stitching (a matchstick underneath works), then wrap the working thread around the stitches several times before knotting. You’ve built a shank from thread — the fabric now has room to close.
Which does the archive favour?
About two-thirds of our 1,600+ styles are shanks — the construction of choice for decorative vintage design — with strong 2-hole and 4-hole ranges for shirt- and work-weight sewing. Browse by type from the full archive.
Can’t find the button you need? Our Button Finding Service searches thousands of unlisted archive styles — send a photo and rough size and we usually reply within one business day.
Frequently asked
What is a shank button?
A button with a loop or bar on the back instead of holes through the face. Thread passes through the shank, so no stitching shows on the front and the button stands slightly proud of the fabric.
When should I use shank buttons?
On thick fabrics (coats, jackets, knits) where the garment needs room to close around the button, and anywhere the button face is decorative — shanks keep the design uninterrupted.
Are 2-hole or 4-hole buttons stronger?
4-hole, sewn in a cross or parallel pattern, spreads stress over more thread and holds longer on hard-working garments. 2-hole is faster to sew and fine for light duty.
Can I replace a flat button with a shank button?
Usually yes, if the buttonhole accommodates the button's diameter. Going the other way (shank garment to flat button) often needs a thread shank added to create clearance.
