Specials & accessories
DIN 261 – T-head bolts
DIN 261:2010. Dimensions from the HBS technical datasheet – in stock, with EN 10204 3.1 / 3.2 certificates.
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Dimensions
DIN 261 dimension table.
Dimensions in mm
| Thread d | Pitch P | b | k | n | m | t min. | db | ||
|---|---|---|---|---|---|---|---|---|---|
| l ≤ 120 | 120 < l ≤ 200 | l > 200 | |||||||
| M8 | 1.25 | 22 | – | – | 5.5 | 8 | 18 | – | – |
| M10 | 1.5 | 26 | – | – | 7 | 10 | 21 | – | – |
| M12 | 1.75 | 30 | – | – | 8 | 12 | 26 | – | – |
| M16 | 2 | 38 | 44 | – | 10.5 | 16 | 30 | – | – |
| M20 | 2.5 | 46 | 52 | – | 13 | 20 | 36 | – | – |
| M24 | 3 | 54 | 60 | – | 15 | 24 | 43 | – | – |
| M30 | 3.5 | 66 | 72 | – | 19 | 30 | 54 | – | – |
| M36 | 4 | 78 | 84 | – | 23 | 36 | 66 | 22 | M12 |
| M42 | 4.5 | 90 | 96 | 109 | 26 | 42 | 80 | 22 | M12 |
| M48 | 5 | – | 108 | 121 | 30 | 48 | 88 | 22 | M12 |
| M56 | 5.5 | – | 124 | 137 | 35 | 56 | 102 | 26 | M16 |
| M64 | 6 | – | 130 | 143 | 40 | 64 | 115 | 26 | M16 |
| M72 | 6 | – | – | 169 | 45 | 72 | 128 | 26 | M16 |
| M80 | 6 | – | – | 185 | 50 | 80 | 140 | 33 | M20 |
| M90 | 6 | – | – | 205 | 55 | 90 | 155 | 33 | M20 |
| M100 | 6 | – | – | 225 | 62 | 100 | 170 | 33 | M20 |
- d
- Nominal thread diameter
- P
- Thread pitch
- b
- Thread length
- k
- Head height
- l
- Nominal length
- n, m
- Dimensions to DIN 261
– : not standardised for this length range, or no confirmed value.
Configure at hbsfasteners.nl/products/engineered.
Specials & accessories
Related standards.
Questions
DIN 261 – frequently asked questions.
- What is DIN 261?
- DIN 261 is the standard for t-head bolts (DIN 261:2010). HBS Solutions supplies DIN 261 specials & accessories from stock, with EN 10204 3.1 / 3.2 certificates.
- Which sizes does DIN 261 cover?
- The HBS datasheet lists DIN 261 from M8 to M100. The full dimension table is on this page and in the free PDF datasheet.
- How do I order DIN 261 specials & accessories?
- Configure the part online or send your parts list through the quote form; HBS Solutions replies with a quotation within 24 hours. Stock items ship from 500.000+ pieces in stock in Almere, the Netherlands.
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