This product is regulated by the following standards:

Technical data

DIN 261

Standard DIN 261

Tee-head bolts

This standard DIN 261 specifies the requirements for threaded T-head bolts M8 to M100 x 6 for fixing structural parts by means of T-slots, for example, in accordance with DIN 649, on foundations or other structures, where T-head bolts are considered adequate detachable fasteners.

Dimensions in mm - source DIN 261
Publication date: 10/2010 - Supersedes DIN 261: 01/1987
d thread size	P	b (l<=120)	b (l>120<=200)	b (l>200)	k nom	n nom	m nom	t min	db
M 8	1.25	22	-	-	5.5	8	18	-	-
M 10	1.5	26	-	-	7	10	21	-	-
M 12	1.75	30	-	-	8	12	26	-	-
M 16	2	38	44	-	10.5	16	30	-	-
M 20	2.5	46	52	-	13	20	36	-	-
M 24	3	54	60	-	15	24	43	-	-
M 30	3.5	66	72	-	19	30	54	-	-
M 36	4	78	84	-	23	36	66	22	M 12
M 42	4.5	90	96	109	26	42	80	22	M 12
M 48	5	-	108	121	30	48	88	22	M 12
M 56	5.5	-	124	137	35	56	102	26	M 16
M 64	6	-	130	143	40	64	115	26	M 16
M 72 X 6	6	-	-	169	45	72	128	26	M 16
M 80 X 6	6	-	-	185	50	80	140	33	M 20
M 90 X 6	6	-	-	205	55	90	155	33	M 20
M 100 X 6	6	-	-	225	62	100	170	33	M 20
Designation example: T-head bolt DIN 261 M16 x 140 - 5.6 Designation example: T-head bolt DIN 261 M72 x 400 x M16 - 4.6

Din 261 2010 - Approximate mass, in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial sizes
d thread size	M8	M10	M12	M16	M20	M24	M30	M36
nominal length l
30	18	28.2
35	19.5	31.3
40	20	34.4
45	22	37.5	56.5	113
50	23.9	40.6	60.9	121
55	25.9	43.7	65.4	129
60	27.9	46.8	69.8	137	211
65	29.8	49.9	74.3	145	223
70	31.8	53	78.7	153	236	335
75	33.8	56.1	83.1	161	248	373
80	37.7	59.2	87.6	176	260	390
90		65.4	96.5	192	285	426
100		71.6	105	208	310	461	812
110			114	224	334	497	868
120			123	239	359	532	923	1310
130				255	384	568	978	1390
140				271	408	603	1030	1470
150				287	433	639	1090	1550
160					458	674	1140	1630
170					483	710	1200	1710
180					507	745	1260	1790
190					532	781	1310	1870
200					557	816	1370	1950

Tee-head bolts

Dimensions in mm - source DIN 261
Publication date: 10/2010 - Supersedes DIN 261: 01/1987
d thread size	P	b (l<=120)	b (l>120<=200)	b (l>200)	k nom	n nom	m nom	t min	db
M 8	1.25	22	-	-	5.5	8	18	-	-
M 10	1.5	26	-	-	7	10	21	-	-
M 12	1.75	30	-	-	8	12	26	-	-
M 16	2	38	44	-	10.5	16	30	-	-
M 20	2.5	46	52	-	13	20	36	-	-
M 24	3	54	60	-	15	24	43	-	-
M 30	3.5	66	72	-	19	30	54	-	-
M 36	4	78	84	-	23	36	66	22	M 12
M 42	4.5	90	96	109	26	42	80	22	M 12
M 48	5	-	108	121	30	48	88	22	M 12
M 56	5.5	-	124	137	35	56	102	26	M 16
M 64	6	-	130	143	40	64	115	26	M 16
M 72 X 6	6	-	-	169	45	72	128	26	M 16
M 80 X 6	6	-	-	185	50	80	140	33	M 20
M 90 X 6	6	-	-	205	55	90	155	33	M 20
M 100 X 6	6	-	-	225	62	100	170	33	M 20
Designation example: T-head bolt DIN 261 M16 x 140 - 5.6 Designation example: T-head bolt DIN 261 M72 x 400 x M16 - 4.6

Din 261 2010 - Approximate mass, in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial sizes
d thread size	M8	M10	M12	M16	M20	M24	M30	M36
nominal length l
30	18	28.2
35	19.5	31.3
40	20	34.4
45	22	37.5	56.5	113
50	23.9	40.6	60.9	121
55	25.9	43.7	65.4	129
60	27.9	46.8	69.8	137	211
65	29.8	49.9	74.3	145	223
70	31.8	53	78.7	153	236	335
75	33.8	56.1	83.1	161	248	373
80	37.7	59.2	87.6	176	260	390
90		65.4	96.5	192	285	426
100		71.6	105	208	310	461	812
110			114	224	334	497	868
120			123	239	359	532	923	1310
130				255	384	568	978	1390
140				271	408	603	1030	1470
150				287	433	639	1090	1550
160					458	674	1140	1630
170					483	710	1200	1710
180					507	745	1260	1790
190					532	781	1310	1870
200					557	816	1370	1950

Full list of Suppliers of Tee-head bolts

Germany

BTS Befestigungselemente-Technik Gmbh

Manufacturer of wing nuts AF, wing screws AF, thumb screws, toothed plate connectors, beam clamps, channel, hexagon (domed) cap nuts

France

FIXNER

Fixner is specialized in the export of a wide range of fasteners products, industrial supplies, and tools.

We offer a wide range of bespoke fasteners and screws and bolts according to DIN, ISO, EN, NF, ANSI, ASME and ASTM standards.

Italy

PRESSVIT S.R.L.

PRESSVIT has been on the market since 1967 and specialises in the production of special screws according to drawings. Within the company there is a dedicated machine shop area where modifications to existing equipment are made in order to allow customised machining of products according to customer requirements.

Cold forged special parts are therefore produced not only on time, but also with the utmost flexibility, as each production step is completed completely independently and according to the customer''s instructions.

China

Be-Fasten

BE FASTEN (SHANGHAI) CO LTD was founded in Shanghai in 2019.

We are specialized in importing, exporting and trading stainless steel and carbon steel fasteners, wire rod and steel bars in metal, metal ingots and steel grating products.

Germany

Bergmann GmbH

Manufacturer of cold forged parts: eye bolts, t-head bolts and clevis pins in steel and stainless steel.

Diameter 5–16mm and lengths up to 180mm

Brooks Forgings Limited

Manufacturer of hot forged fasteners, Eyebolts, shackles, holding down blts, U-bolts, hammerhead , T- Bolts and Special Bolts.

Hot forged parts from M10 to M100 and up to 6000 mm length.

Clyde Fasteners Limited

Manufacturer of socket screws and Tee Slot Bolts both metric and imperial

Italy

Colombo Special Fasteners S.r.l.

Manufacturing through cold forging technology of steel products, from Ø6 to Ø33 and lengths proportional to the Ø from I = 10mm to I = 240mm

Tensile grades: 4.6 - 5.6 - 8.8 - 9.8 - 10.9 - 12.9 - B7 - B7M

Poland

France

China

The portal for fasteners and fixing elements

Suppliers of Tee-head bolts

Technical data

Standard DIN 261

Details

BTS Befestigungselemente-Technik Gmbh

FIXNER

PRESSVIT S.R.L.

Be-Fasten

Bergmann GmbH

Brooks Forgings Limited

Clyde Fasteners Limited

Colombo Special Fasteners S.r.l.

Fabryka Elementow Zlacznych FEZ S.A.

HS Montagetechnik GmbH

Kolb KS Fasteners GmbH

MAZZONETTO GINO s.r.l.

Ningbo Yuema Fastener Co. LTD.

Quanzhou Chang Jin Auto Parts Co.Ltd

Šroubárna Kyjov spol. s r.o

Srubena UNIA S.A.

SUPER ENGINEERS

TORNILLERIA AMEZUA S.A.

Vissal Manufacturing

Wa Tai Industrial Co. Ltd.

WERDA GmbH & Co. KG

Yung Ming Fastener

Zhanyu Fastener Manufacturing Co. Ltd.

Zhejiang Huantai Fastener Co. Ltd

Zhejiang Xinchun Fastening Piece Co.