Execution standard reference

DIN 261 T-head bolts

Metric T-head bolts for slots and machine constructions, M8 to M100×6.

boltCurrent standardDimensions available

Dimensional reference

Shows dimensions already stored in the standard library. Missing values are not filled automatically.

DIN 261 dimensional reference

T-head bolts

Standardized drawing
aktLbd
dThread sizePPitch · mmbLe120b · Thread Length (L ≤ 120) (mm)b120To200b · Thread Length (120 < L ≤ 200) (mm)bL > 200 · mmbodyDiameterMaxdₛ · Body Diameter (max) (mm)bodyDiameterMindₛ · Body Diameter (min) (mm)headHeightMaxk · Head Height (max) (mm)headHeightMink · Head Height (min) (mm)headThicknessMaxn · Head Thickness (max) (mm)headThicknessMinn · Head Thickness (min) (mm)headWidthMaxm · Head Width (max) (mm)headWidthMinm · Head Width (min) (mm)rMaxr · Radius (max) (mm)internalThreadd₂ · Internal ThreadinternalThreadLengtht₁ · Internal Thread Length (mm)
M81.25228.587.425.95.18.757.2518.917.10.5
M101.52610.589.427.56.510.759.2522200.5
M121.753012.711.38.757.2512.911.127251
M162384416.715.311.49.616.915.131291
M202.5465220.8419.1613.912.1211937.2535.751
M243546024.8423.1615.914.1252344.2541.751.6
M303.5667230.8429.162018312955.552.51.6
M36478843735242237.2534.7567.564.5222
M424.590961093433272543.2540.7581.578.52M1222
M4851081213837312949.2546.7589.7586.252M1222
M565.5124137454436.2533.7557.554.5103.75100.253M1226
M646130143504941.2538.7565.562.5116.75113.253M1626
M7261695553.846.2543.7573.570.51301264M1626
M8061856563.851.2548.7581.578.51421384M2033
M9062057068.856.553.591.7588.251571534M2033
M10062258078.863.560.5101.7598.251721685M2033
dM8
P · mm1.25
bLe12022
b120To200
More dimensions
b · mm
bodyDiameterMax8.58
bodyDiameterMin7.42
headHeightMax5.9
headHeightMin5.1
headThicknessMax8.75
headThicknessMin7.25
headWidthMax18.9
headWidthMin17.1
rMax0.5
internalThread
internalThreadLength
dM10
P · mm1.5
bLe12026
b120To200
More dimensions
b · mm
bodyDiameterMax10.58
bodyDiameterMin9.42
headHeightMax7.5
headHeightMin6.5
headThicknessMax10.75
headThicknessMin9.25
headWidthMax22
headWidthMin20
rMax0.5
internalThread
internalThreadLength
dM12
P · mm1.75
bLe12030
b120To200
More dimensions
b · mm
bodyDiameterMax12.7
bodyDiameterMin11.3
headHeightMax8.75
headHeightMin7.25
headThicknessMax12.9
headThicknessMin11.1
headWidthMax27
headWidthMin25
rMax1
internalThread
internalThreadLength
dM16
P · mm2
bLe12038
b120To20044
More dimensions
b · mm
bodyDiameterMax16.7
bodyDiameterMin15.3
headHeightMax11.4
headHeightMin9.6
headThicknessMax16.9
headThicknessMin15.1
headWidthMax31
headWidthMin29
rMax1
internalThread
internalThreadLength
dM20
P · mm2.5
bLe12046
b120To20052
More dimensions
b · mm
bodyDiameterMax20.84
bodyDiameterMin19.16
headHeightMax13.9
headHeightMin12.1
headThicknessMax21
headThicknessMin19
headWidthMax37.25
headWidthMin35.75
rMax1
internalThread
internalThreadLength
dM24
P · mm3
bLe12054
b120To20060
More dimensions
b · mm
bodyDiameterMax24.84
bodyDiameterMin23.16
headHeightMax15.9
headHeightMin14.1
headThicknessMax25
headThicknessMin23
headWidthMax44.25
headWidthMin41.75
rMax1.6
internalThread
internalThreadLength

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