Silo Medical Supply
Ultra-Fine™ Mini Insulin pen needle 31G x 5mm Needle Length
The Ultra-Fine™ Mini Insulin Pen Needle (31 gauge x 5mm) is designed for people who prefer a shorter needle while maintaining reliable insulin delivery. The 31-gauge needle is very thin to help reduce injection discomfort, and the 5mm length supports shallow subcutaneous injections for many users. This design is often chosen by people who want a more comfortable injection experience without compromising consistency.
Each pen needle is manufactured from high-quality surgical steel and engineered with optimal point geometry to support smooth, controlled insertion. A micro-bonded lubrication coating helps reduce friction during injection, which can improve comfort with repeated daily use. These pen needles are non-toxic, non-pyrogenic, latex-free, and compatible with most insulin pens and dosers sold in the U.S. Sold in boxes of 100, they’re well suited for home use, caregivers, and clinical environments.
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What is the benefit of a 5mm insulin pen needle?
What is the benefit of a 5mm insulin pen needle?
A 5mm needle length supports shallow subcutaneous insulin delivery and is often chosen to help reduce injection discomfort. The best needle length depends on provider guidance and individual needs.
Is a 31-gauge needle comfortable for daily injections?
Is a 31-gauge needle comfortable for daily injections?
A 31-gauge needle is among the thinnest available. Many users find thinner needles more comfortable because they require less force to insert.
Are these pen needles compatible with all insulin pens?
Are these pen needles compatible with all insulin pens?
These pen needles are considered universal and are compatible with most insulin pens and dosers sold in the U.S. If you’re unsure, it’s always best to confirm compatibility with your specific pen.
What does micro-bonded lubrication do?
What does micro-bonded lubrication do?
Micro-bonded lubrication is a special coating applied to the needle to reduce friction during insertion. This helps the needle glide more smoothly and can improve comfort.
Can insulin pen needles be reused?
Can insulin pen needles be reused?
No. Pen needles are intended for single use only. Reusing needles can dull the tip, increase discomfort, and raise the risk of skin irritation or infection.

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