# Determining Compatible Female Header Pin Sizes

**URL:** <https://forum.digikey.com/t/determining-compatible-female-header-pin-sizes/66227>\
**Category:** Rectangular Connectors\
**Tags:** samtec-inc, faqs, headers-receptacles-female-sockets\
**Created:** [March 5, 2026, 9:28pm UTC](https://forum.digikey.com/t/determining-compatible-female-header-pin-sizes/66227 "2026-03-05T21:28:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![guy.steph.ryan](https://avatars.discourse-cdn.com/v4/letter/g/7993a0/32.png) [@guy.steph.ryan](https://forum.digikey.com/u/guy.steph.ryan)\
**Post date:** [March 5, 2026, 9:28pm UTC](https://forum.digikey.com/t/determining-compatible-female-header-pin-sizes/66227/1 "2026-03-05T21:28:33Z")

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Hi. I’m trying to determine if Samtec female receptacle P/N [BCS-115-L-S-TE](https://www.digikey.com/en/products/detail/samtec-inc/BCS-115-L-S-TE/1100406) sockets are compatible with 0.025” square posts. I can’t seem to find this information in the datasheet.

Thanks!

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<div class="post-metadata">

**Author:** ![rick\_1976](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/rick_1976/32/1571_2.png) [@rick\_1976](https://forum.digikey.com/u/rick_1976)\
**Post date:** [March 5, 2026, 10:56pm UTC](https://forum.digikey.com/t/determining-compatible-female-header-pin-sizes/66227/2 "2026-03-05T22:56:07Z")

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Greetings,

The mating products have 25mil square posts, so compatibility with others such could be regarded as probable.

0.1" headers of the sort are one of few product segments where at least some degree of interoperability is more likely than not.