The 0.50mm shaft creates a smaller passage through the weave than the 0.60mm Extra-Fine pin.
For delicate fabrics · BOHIN Couturex EC6
The finer pin for fabric you cannot afford to mark
BOHIN 44312 Super-Fine No. 4 dressmaker pins use a remarkably slim 0.50mm polished steel shaft to minimise disturbance in delicate fabric. Supplied in a professional 250g metal tin, they are the precise choice for fine dressmaking, couture work, bridal sewing, lingerie, appliqué and textile projects where every hole matters.
- 30mm × 0.50mm for controlled pinning with an exceptionally fine shaft.
- Approximately 4,920 pins in a professional-scale 250g tin.
- Perfectly polished nickel-plated steel for smooth passage through suitable cloth.
- Made in France by BOHIN, a specialist French needle and pin maker since 1833.
No. 4 · 30 × 0.50mm
30mmPrecise working length
0.50mmSuper-Fine diameter
250g TinApprox. 4,920 pins
Delicate FabricOfficial BOHIN classification
When fabric is delicate, “fine enough” is not always fine enough
The difference between BOHIN's 0.60mm Extra-Fine and 0.50mm Super-Fine pin sounds tiny. On silk, chiffon, organza, lace and other easily marked cloth, that slimmer shaft can noticeably reduce displacement and make careful pinning feel less intrusive.
Perfectly polished nickel-plated steel is designed to move cleanly through fine fibres without unnecessary drag.
A compact No. 4 length remains manageable around curves, small pattern pieces and detailed construction.
Fine does not mean invisible: every pin can mark the wrong fabric or damage a fibre if forced. Always test in an offcut or hidden seam allowance before pinning the project.
Designed for the materials that make ordinary pins feel too heavy
Silk & fine satin
Use within seam allowances after testing to reduce the disruption a heavier dressmaker pin can create.
Chiffon & georgette
The slender shaft is better suited to light, mobile cloth that can pucker or shift around a thicker pin.
Organza & voile
Control transparent and lightweight layers while keeping pin holes as small as practical.
Lace & lingerie
Useful for accurate placement, matching and construction where fine textiles need a delicate touch.
Bridal & occasionwear
A professional-scale choice for studios working repeatedly with delicate overlays, linings and special fabrics.
Fine linings
Secure slippery lightweight lining pieces without adding the bulk of a large pin or decorative head.
Appliqué & fine patchwork
Hold small pieces accurately when a traditional pin is preferred over glue, clips or temporary adhesive.
Costume workrooms
Keep a serious supply ready for fittings and construction involving a wide range of fragile performance fabrics.
Choose by fabric—not by name alone
Super-Fine is the specialist choice for delicate cloth
BOHIN's Extra-Fine and Super-Fine tins are both 30mm No. 4 pins, but the diameter changes their role. Choose this 0.50mm Super-Fine pin when protecting delicate fibres matters more than the extra body of a thicker shaft.
- Choose 0.50mm Super-Fine for delicate and easily marked fabrics
- Choose 0.60mm Extra-Fine for everyday light and medium fabrics
- Do not force a 0.50mm pin through thick or resistant layers
- Test either size before working on irreplaceable material
Same length, different purpose
A 0.10mm difference customers can feel
0.50mm44312 Super-Fine
Delicate fabrics
Delicate fabrics
0.60mm43312 Extra-Fine
Light and medium fabrics
Light and medium fabrics
Both are 30mm long. Diameter is the important buying difference.
BOHIN 44312 Super-Fine or 43312 Extra-Fine?
| Feature | 44312 Super-Fine | 43312 Extra-Fine |
|---|---|---|
| BOHIN range | Couturex EC6 Super-Fine | Couturex EC4 Extra-Fine |
| Pin size | No. 4 | No. 4 |
| Length | 30mm | 30mm |
| Diameter | 0.50mm | 0.60mm |
| Official fabric class | Delicate fabrics | Light and medium fabrics |
| Approximate pins per 250g | 4,920 | 3,475 |
| Choose it when | The smallest practical pin hole and minimal fabric disturbance are priorities | You want a versatile fine pin with slightly more body |
Professional-scale supply
Approximately 4,920 pins in the 250g tin
BOHIN's technical catalogue lists approximately 19,680 of these No. 4 Super-Fine pins per kilogram. One quarter of that published kilogram figure gives an estimated 4,920 pins in a 250g tin.
The product is supplied by weight, not by individually counted pieces. “Approximately” accounts for normal manufacturing and weight variation.
Count calculation: 19,680 pins per kg × 0.25kg = approximately 4,920 pins.
A tin built for repeated use
Ideal for studios, classrooms and serious sewing spaces
Keep the main reserve protected in its metal tin and decant a small working quantity into a pin cushion or magnetic dish. The bulk format means the right specialist pin is ready whenever a delicate project reaches the cutting table.
More pins does not mean “better” for every job: the higher piece count comes from the slimmer 0.50mm shaft. Choose this tin for fabric suitability, not quantity alone.
Four habits for successful super-fine pinning
Test first
Pin an offcut or hidden seam allowance, then remove the pin and inspect both sides under good light.
Stay in allowances
Where possible, place pins inside the seam allowance so any tiny opening is not on the visible finished surface.
Never force the shaft
If several thick layers resist the 0.50mm pin, choose a more suitable pin or clip instead of bending it.
Remove before sewing
Take every steel pin out before the sewing-machine needle and presser foot reach it.
BOHIN 44312 at a glance
| Brand | BOHIN |
|---|---|
| Product range | Couturex EC6 Super-Fine dressmaker pins |
| Manufacturer reference | 44312 |
| Pin size | No. 4 |
| Length | 30mm |
| Diameter | 0.50mm |
| Material | Perfectly polished nickel-plated steel |
| Head style | Traditional all-steel dressmaker pin; no separate ball or glass head |
| Pack format | 250g metal tin |
| Approximate quantity | Approximately 4,920 pins; supplied by weight |
| Recommended fabrics | Delicate fabrics |
| Country of manufacture | France |
Protect fine points, keep the tin dry and retire damaged pins
Close the metal tin between sessions and keep it away from children, pets and the edge of the worktable.
Never return damp pins to the tin. Dry storage helps protect the polished nickel-plated steel surface.
Do not force the pin through thick layers. Discard any pin that becomes bent, burred, blunt or rusty.
Hitting a steel pin can break the machine needle, damage the machine or send fragments towards the operator.
Choose the right companion tools
Need more everyday strength?
Choose BOHIN 43312 Extra-Fine for a slightly stronger 0.60mm shaft intended for light and medium fabrics.
View BOHIN Extra-Fine Pins →Browse cutting tools
Pair delicate pinning with sharp, controlled scissors and rotary tools suited to your chosen material.
Browse Scissors & Cutting Tools →Unsure which tin?
Tell us which fabrics you use most and our team can help you choose between the 0.50mm and 0.60mm pins.
Contact Direct Sewing →BOHIN 44312 Super-Fine Pin FAQs
What are BOHIN 44312 pins?
They are BOHIN Couturex EC6 Super-Fine No. 4 straight dressmaker pins supplied in a 250g metal tin.
Are these safety pins?
No. They are traditional straight dressmaker pins without a clasp and should not be categorised as safety pins.
How long is each pin?
Each pin is 30mm long.
How thick is each pin?
The shaft diameter is 0.50mm, which BOHIN classifies as Super-Fine EC6.
How many pins are in the tin?
Approximately 4,920. The pack is supplied as 250g by weight, so the count is an estimate rather than an individually counted quantity.
Which fabrics are they designed for?
BOHIN classifies them for delicate fabrics. Examples can include silk, fine satin, chiffon, organza, voile, lace and lightweight linings, subject to testing.
Will they leave no mark at all?
No pin can guarantee that on every textile. The 0.50mm shaft is designed to minimise disturbance, but delicate or unusual fabrics must still be tested first.
What is the difference between Super-Fine and Extra-Fine?
BOHIN 44312 Super-Fine is 0.50mm in diameter for delicate fabrics. BOHIN 43312 Extra-Fine is 0.60mm and intended for light and medium fabrics.
Can I use them on ordinary cotton?
You can use them on many lighter cottons, but the 0.60mm Extra-Fine pin may provide more body for general sewing. Choose according to the fabric and test first.
Can I use them on denim or canvas?
They are not designed for heavy or resistant material. Forcing a 0.50mm pin through thick layers can bend it or damage the fabric.
Are these glass-head pins?
No. They are all-steel dressmaker pins without separate glass or plastic heads.
What are they made from?
They are made from perfectly polished nickel-plated steel.
Where are BOHIN 44312 pins made?
They are made in France.
What does No. 4 mean?
No. 4 is BOHIN's size designation for this 30mm × 0.50mm Couturex Super-Fine pin.
Is 44312L the manufacturer reference?
The BOHIN reference is 44312. The additional “L” appears in the current Direct Sewing URL handle.
Is the box metal?
Yes. The 250g pack is supplied in a reusable metal storage tin.
Are these suitable for professional use?
Yes. The bulk format suits bridal studios, costume departments, sample rooms, alterations, classrooms and other high-use environments.
Can I sew over these pins?
No. Remove every pin before the sewing-machine needle reaches it. A machine needle striking a steel pin can break and cause damage or injury.
Can I iron over them?
Remove pins before final pressing whenever practical. Pressure can imprint the pin into delicate fabric, distort the work or leave a hot sharp object exposed.
How should I store them?
Keep the tin closed and dry. Use a pin cushion or magnetic dish for a small working quantity and keep the main tin securely stored.
When should a pin be discarded?
Discard it immediately if it becomes bent, blunt, burred, rusty or otherwise damaged.
Choose the slimmer shaft when every fibre deserves care
BOHIN 44312 combines a 0.50mm Super-Fine profile, polished French-made steel and approximately 4,920 pins in one serious workroom tin.
Review the Specifications