BD Ultra-Fine Insulin Pen Needles 31G 5mm – 100 Count | Diabetic Pen Needles

BD Ultra-Fine 31G 5mm Pen Needles — Short, Thin & Comfortable

BD (Becton Dickinson) Ultra-Fine™ pen needles (31G × 5mm) are engineered for comfort and precision. The short, thin design helps make daily insulin injections smoother and easier — a dependable everyday choice for people managing diabetes and those using GLP-1 pen injectors. Each box contains 100 individually sealed, single-use needles.

Compatible With Insulin & GLP-1 Pens (Ozempic, Wegovy & More)

These universal-fit needles work with most major insulin pens and the pen injectors used for GLP-1 medications such as Ozempic®, Wegovy®, Mounjaro®, and Zepbound®. Always confirm compatibility with your specific pen and follow your device's instructions for use.

Key Features & Benefits

• 31G × 5mm: short, thin needles designed for a comfortable injection.
• Trusted BD quality: from a long-established diabetes-care brand.
• Universal fit: compatible with most insulin and GLP-1 pen devices.
• Individually sealed: sterile, single-use, and hygienic.
• 100-count box: a reliable everyday supply.

Specifications

• Gauge: 31G (0.25mm) — a higher gauge number means a thinner needle
• Length: 5mm
• Quantity: 100 individually sealed needles
• Use: single-use, sterile
• Fit: universal screw-thread, compatible with most pen injectors

Compare Other Lengths & Gauges

Want something shorter or thinner? Compare the NovoFine Plus 32G 4mm and BD Nano 2nd Gen 32G 4mm. Need a longer needle? See the NovoFine 32G 6mm or NovoFine 30G 8mm. Browse all insulin pen needles, or add TruePlus 33G lancets for glucose testing.

How to Use & Store Safely

Attach a new needle for each injection per your pen device's instructions. Never reuse or share needles. Dispose of used needles in an FDA-cleared sharps container per your local guidelines. Store in a cool, dry place.

Shipping, Returns & Authenticity

We ship genuine, factory-sealed BD Ultra-Fine needles from the U.S. with fast, discreet delivery. Not fully satisfied? Contact our support team. Note: some U.S. states require a prescription to purchase pen needles — please check your state's rules before ordering.

Frequently Asked Questions

Is 31G thinner or thicker than 32G?

31G is slightly thicker than 32G. A higher gauge number means a thinner needle, so 32G is the thinner of the two.

Will these fit my pen?

BD Ultra-Fine needles are universal-fit and work with most major insulin and GLP-1 pens. Check your device's instructions if unsure.

Should I choose 5mm or 4mm?

Guidelines recommend 4mm as the default for most adults, with 5mm an acceptable alternative. Needle length is a decision to confirm with your healthcare provider.

How many needles come in a box?

100 individually sealed, single-use pen needles.