Manufacturer · Fashion & Home Accessories
The size of the hook and bar fastener is chosen based on the belt’s width and thickness: the hook must fit inside the belt with a little clearance above and below, and for press-on models, the prongs must pass through all fabric layers. Small hooks and bars are used for narrow belts on skirts and light trousers, medium sizes for standard trouser belts, and plate or double hooks for wide belts and heavy fabrics. Since manufacturers number sizes differently, the safest way is to compare a sample with the actual belt.
Which parameters determine the hook and bar size
The size of a hook and bar fastener is not a single number. When choosing and ordering, pay attention to several parameters:
- Hook length – from the base to the tip of the hooking element.
- Hook width – how much of the belt’s width it occupies.
- Plate length – for adjustable models, includes all hooking positions.
- Metal thickness – thicker metal bends less and withstands greater load.
- Prong length – only for press-on models; must match belt thickness.
- Number and placement of holes – for sew-on models.
How to measure the belt
- Belt width. Measure the finished belt from top to bottom edge in millimetres.
- Belt thickness. Fold a piece of the actual belt with all layers – fabric, interlining and lining – and measure with calipers or estimate by sample.
- Overlap. Measure how much the upper end overlaps the lower. The hook and bar must fit within this zone.
- Load. Consider the garment type – a narrow high-waisted trouser stresses the belt more than a wide low-waisted model.
Approximate selection table
| Garment | Belt | Recommended hook and bar type |
|---|---|---|
| Light skirt, dress at waist | Narrow, thin | Small hook and bar or wire hook and eye |
| Skirt with belt | Narrow to medium | Small to medium hook and bar |
| Women’s trousers | Medium | Medium hook and bar |
| Men’s casual trousers | Medium | Medium press-on hook and bar |
| Suit trousers | Medium to wide, dense | Plate or double hook and bar |
| High-waisted trousers with wide belt | Wide | Plate, double or two hooks and bars |
| Work trousers, uniform | Medium to wide, thick | Plate or adjustable with long prongs |
This table is a guideline. The exact model depends on fabric, cut and finishing, so it is best to check with a sample.
What happens with the wrong size
Too large hook and bar
- Its edge is visible above or below the belt;
- The belt deforms and bulges;
- For thin fabrics, it shows through the material;
- It pricks or presses when worn.
Too small hook and bar
- Cannot withstand the load and bends;
- The upper corner of the belt flips outwards;
- For press-on models, the prongs do not reach the counter plate and the fastener falls off.
Size and wide belts
For belts wider than usual, a standard hook and bar only holds the middle and the upper corner opens. There are three solutions: a plate hook and bar with a wider hook, a double hook and bar with two hooking elements, or two separate hooks and bars stacked. The third option is common for high-waisted trousers and corset belts.
Size and fabric thickness for press-on hooks and bars
For press-on hooks and bars, prong length is as important as hook size. If the prongs are too short for the belt thickness, they won’t bend around the counter plate. If too long, sharp ends remain that catch lining and underwear. When ordering, always specify fabric type and number of layers to get a model with suitable prongs and compatible die.
Size and fabric type
The same belt width may require different hook and bar sizes depending on fabric:
- Wool and suit fabrics – soft and stretch-prone; choose a larger support area and interlining reinforcement.
- Cotton and linen – medium density; standard size usually sufficient.
- Denim and twill – thick and dense; press-on models need longer prongs.
- Stretch fabrics – stretch around the hook and bar; choose a wider model and stable interlining in the belt.
- Thin summer fabrics – prefer smaller, flatter hook and bar matching fabric tone to avoid showing through.
If you work with several fabric types in one collection, you don’t have to use the same hook and bar for all. Often it’s wiser to choose two sizes – for light and heavy fabrics.
Hook and bar or wire hook and eye for small sizes
When the required hook and bar is very small – for necklines, top edges of concealed zips on dresses or lingerie – wire hooks and eyes are usually more suitable. They come in small sizes, are finer and lighter on delicate fabrics. The hook and bar remains for belts where the load is greater.
How to order the right size
- Send belt width, thickness and garment type.
- Specify if the hook and bar will be sewn or press-on.
- Request samples in two adjacent sizes and test them on the actual belt.
- Approve the size and record it in the tech pack with the article code.
- If you use other accessories in the belt – for example a metal zip – coordinate the finishes. See zips.
See available models and sizes in the hook and bar collection.
Samples of hook and bar fasteners from Polkom
Polkom manufactures hook and bar fasteners wholesale in various sizes, materials and finishes for garment factories, ateliers and brands across Europe. We send samples quickly so you can choose the right size before production. Contact us via the inquiry form, specifying belt width and fabric.
