The slim 0.60mm shaft is easier on light and medium cloth than a heavy general-purpose pin, helping layers sit naturally.
French-made Couturex pins · BOHIN 43312
The workroom-sized tin of pins you will actually enjoy using
BOHIN Couturex Extra-Fine No. 4 dressmaker pins combine a slim 0.60mm profile, polished nickel-plated steel and sharp, smooth points for confident pinning through light and medium fabrics. The generous 250g metal tin is made for busy dressmakers, studios, classrooms and sewists tired of running out mid-project.
- 30mm × 0.60mm gives a useful balance of finesse, control and everyday strength.
- Approximately 3,475 pins in a professional-scale 250g tin.
- Polished nickel-plated steel is designed to pass smoothly through fabric.
- Made in France by BOHIN, a specialist French needle and pin maker since 1833.
No. 4 · 30 × 0.60mm
30mmPin length
0.60mmExtra-fine diameter
250g TinApprox. 3,475 pins
Made in FranceBOHIN reference 43312
Small tools can make a surprisingly large difference to accuracy
A rough, blunt or unnecessarily thick pin can distort a seam, snag a fibre or slow down fitting. BOHIN's polished extra-fine steel pins are made for reliable everyday dressmaking where smooth insertion and precise fabric control matter.
Polished nickel-plated steel glides cleanly through suitable fabrics, so aligning seams, hems and pattern pieces feels more precise.
A 250g tin supports garment production, alterations, costume departments, teaching rooms and frequent home sewing.
A practical everyday pin for dressmaking and workroom sewing
Garment construction
Hold seams, darts, facings, collars, cuffs and waistbands while preserving accurate alignment.
Pattern preparation
Secure paper patterns to many light and medium fabrics before marking or cutting.
Fittings & alterations
Pin hems, take-ins and placement adjustments with a low-profile steel pin that does not add a bulky head.
Tailoring workrooms
Keep a generous supply available for sampling, production preparation and repeat customer alterations.
Costume departments
Useful for busy fitting rooms and construction benches where pins are consumed, moved and reused continually.
Sewing classrooms
A bulk tin makes it easier to equip several students and replenish pin cushions throughout a course.
Craft & soft furnishings
Suitable for many light-to-medium textile projects when the material accepts a fine straight pin without marking.
Everyday home sewing
Buy once and keep a serious reserve ready for quilts, garments, repairs and the next project already forming in your head.
Understand the size
Why 30mm × 0.60mm is such a useful middle ground
At 30mm long, the pin remains manoeuvrable around curved seams and detailed garment work. Its 0.60mm diameter is fine enough for many light fabrics, while retaining more body than BOHIN's thinner 0.50mm Super-Fine pin.
- Choose this 0.60mm Extra-Fine pin for most light and medium fabrics
- Choose the 0.50mm Super-Fine pin for particularly delicate cloth
- Test first on silk, satin, coated or easily marked material
- Use a heavier or longer pin when thick layers overwhelm a 30mm pin
Actual specification
No. 4 Extra-Fine
030mm long30mm
0.60mm diameterFine enough for light and medium fabrics
Extra-Fine 43312 or Super-Fine 44312?
The names sound similar, but the diameter and intended fabric are different. Choose according to the most delicate fabric you regularly sew—not simply the larger pin count.
| Feature | 43312 Extra-Fine | 44312 Super-Fine |
|---|---|---|
| BOHIN range | Couturex EC4 Extra-Fine | Couturex EC6 Super-Fine |
| Pin size | No. 4 | No. 4 |
| Length | 30mm | 30mm |
| Diameter | 0.60mm | 0.50mm |
| Intended fabric | Light and medium fabrics | Delicate fabrics |
| Approximate pins per 250g | 3,475 | 4,920 |
| Choose it when | You want a fine, versatile everyday dressmaking pin | Your priority is the smallest possible hole in delicate cloth |
Bulk without guesswork
Approximately 3,475 pins—not an inflated estimate
BOHIN's technical catalogue lists approximately 13,900 of these No. 4 Extra-Fine pins per kilogram. A 250g tin therefore contains approximately 3,475 pins, with normal manufacturing and weight variation.
Because the pack is sold by weight rather than an individually counted quantity, “approximately” is important. The 250g specification—not an exact piece count—is the guaranteed pack measure.
Why the number matters: some third-party pages state approximately 5,000 for reference 43312. That conflicts with BOHIN's published pins-per-kilogram specification and the more reliable 3,475 estimate.
Professional-scale supply
250g metal storage tin
A practical format for a workroom shelf, classroom cupboard or serious sewing space. Decant a working quantity into pin cushions or magnetic dishes and keep the remaining pins protected in the tin.
Count calculation:
13,900 pins per kg × 0.25kg
= approximately 3,475 pins
13,900 pins per kg × 0.25kg
= approximately 3,475 pins
Four habits protect your fabric, machine and fingers
Test the fabric
Try a pin in an inconspicuous offcut first, especially with silk, satin, coated cloth or fabric prone to permanent holes.
Pin accurately
Use only as many pins as the operation needs and keep every point fully within the project or pin cushion.
Remove before stitching
Never rely on a machine needle passing over a steel pin. Remove each pin before the presser foot and needle reach it.
Inspect and retire
Discard any bent, burred, rusty or blunt pin. A damaged pin is false economy when it can mark fabric or cause injury.
BOHIN 43312 at a glance
| Brand | BOHIN |
|---|---|
| Product range | Couturex EC4 Extra-Fine dressmaker pins |
| Manufacturer reference | 43312 |
| Pin size | No. 4 |
| Length | 30mm |
| Diameter | 0.60mm |
| Material | Polished nickel-plated steel |
| Head style | Traditional all-steel dressmaker pin; no ball or glass head |
| Pack format | 250g metal tin |
| Approximate quantity | Approximately 3,475 pins; supplied by weight |
| Recommended fabrics | Light and medium fabrics |
| Country of manufacture | France |
Keep the tin dry, the points protected and damaged pins out of circulation
Close the metal tin between sessions and keep pins away from children, pets and the edge of the worktable.
Store in a dry room and never return damp pins to the tin. Moisture can compromise plated steel over time.
Decant a manageable quantity for the current job so thousands of loose points are not exposed on the table.
Sewing over a pin can break the machine needle, damage the machine or send sharp fragments towards the operator.
Choose the matching pin and the right sewing tools
Need a finer pin?
Choose BOHIN 44312 Super-Fine when delicate fabric calls for a slimmer 0.50mm shaft.
View BOHIN Super-Fine Pins →Browse cutting tools
Pair accurate pinning with quality scissors, rotary cutters and replacement blades for a cleaner preparation workflow.
Browse Scissors & Cutting Tools →Unsure about your fabric?
Tell us what you are making and which materials you use most, and our team can help you choose between Extra-Fine and Super-Fine.
Contact Direct Sewing →BOHIN 43312 Extra-Fine Pin FAQs
What are BOHIN 43312 pins?
They are BOHIN Couturex EC4 Extra-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. They should not be categorised or used as safety pins.
How long is each pin?
Each pin is 30mm long.
How thick is each pin?
The shaft diameter is 0.60mm, which BOHIN classifies as Extra-Fine EC4.
How many pins are in the tin?
Approximately 3,475. The pack is supplied as 250g by weight, so the piece count is an estimate rather than an individually counted quantity.
Why do some pages say approximately 5,000 pins?
That estimate conflicts with BOHIN's published figure of approximately 13,900 pins per kilogram for this size. One quarter of that kilogram specification is approximately 3,475 pins.
Which fabrics are they designed for?
BOHIN specifies these pins for light and medium fabrics. Always test a pin on an offcut when the material is delicate, coated or easily marked.
Can I use them on delicate fabric?
Some fabrics may be suitable, but BOHIN's 0.50mm Super-Fine 44312 is the dedicated option for delicate material. Test first before pinning the project.
What is the difference between Extra-Fine and Super-Fine?
The 43312 Extra-Fine pin is 0.60mm in diameter for light and medium fabrics. The 44312 Super-Fine pin is slimmer at 0.50mm and intended for delicate fabrics.
Are these glass-head pins?
No. They are traditional all-steel dressmaker pins without separate glass or plastic heads.
What are the pins made from?
They are polished nickel-plated steel.
Where are BOHIN 43312 pins made?
They are made in France.
What does No. 4 mean?
No. 4 is BOHIN's size designation for this 30mm × 0.60mm Couturex Extra-Fine pin.
Is 43312L the BOHIN reference?
The manufacturer reference is 43312. The extra “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 250g format is well suited to alterations, tailoring, costume, sample rooms, classrooms and other high-use environments.
Can I sew over these pins?
No. Remove every pin before the sewing-machine needle reaches it. Hitting a steel pin can break the needle and cause machine damage or injury.
Can I iron over the pins?
Remove pins before final pressing whenever practical. Direct pressure can imprint the pin into fabric, distort the work or leave a hot sharp object exposed.
How should I store them?
Keep the tin closed in a dry location. Use a pin cushion or magnetic dish for a small working quantity and keep the full tin away from children and pets.
When should I throw a pin away?
Discard it immediately if it is bent, blunt, burred, rusty or otherwise damaged.
Stock the tin once—and keep your sewing moving
BOHIN 43312 gives dressmakers a versatile 0.60mm pin, smooth French-made quality and approximately 3,475 chances to align the next seam beautifully.
Review the Specifications