Content with Standards

16 June 2022
Hexagon Stud Connectors, also called Coupling Nut, are made based on withdrawn DIN 6334 standard. D s e m M6 10 11.05 18 M8 13 14.38 24 M10 17 18.90 30 M12 19 21.10 36 M14 22 24.49 42 M16 24 26.75 48 M18 27 29.56 54 M20 30 33.53 60 M22 32 35.03 66 M24 36 41.60 72 M27 41 45.20 81 M30 46 50.89 90 M33 50 55.
Read more about DIN 6334 Hexagon Stud Connector, Coupling Nut - General specification (coarse thread)

04 April 2022
Nominal size Inside diameter (d1) Outside diameter (d2) Thickness (s) nom. max. min. nom. max. min. nom max. min. M5 5.5 5.8 5.5 15 15 14.2 1.6 1.9 1.3 M6 6.6 7.0 6.6 18 18 17.2 2 2.3 1.7 M8 9 9.4 9.0 24 24 23.2 2 2.3 1.7 M10 11 11.5 11.0 30 30 29.2 2.5 2.8 2.2 M12 14 14.5 14.0 36 36 34.8 3 3.6 2.4 M16 18 18.
Read more about BS 4320 Basic dimensions Form G washers for selected sizes

25 January 2022
Dimensions for selected, most popular sizes Size (d) M12 M16 M20 M22 M24 M27 M30 M33 M36 M39 Pitch 1.75 2 2.5 2.5 3 3 3.5 3.5 4 4 Length tolerances Nominal length (l) 3000 2000 1000 Minimum/Maximum ±10.5 ±7.5 ±4.5 Nominal length (l) 500-420 400-320 300-260 240-190 Minimum/Maximum ±1.25 ±1.15 ±1.05 ±0.925 Nominal length (l) 180-130 120-85 80-55 50-35 30-20 18-12 10-8 6-5 Minimum/Maximum ±0.8 ±0.7 ±0.6 ±0.5 ±0.42 ±0.
Read more about DIN 976-1 Basic Dimensions for fully threaded studding, threaded bar, stud bolt

22 November 2021
Chemical Composition As per DIN 267-4 Class C max. Mn min. P max. S max. 4, 5 and 6 0.50 - 0.110 0.150 8 0.58 0.30 0.060 0.150 10 0.58 0.30 0.048 0.058 12 0.58 0.45 0.048 0.058 Mechanical Properties As per DIN 267-4 Property Class 4 Class 5 Class 6 Class 8 Class 10 Class 12 Proof load stress (N/mm^2) 400 500 600 800 1000 1200 Symbol |4| |5| |6| |8| |10| |12| Hardness Vickers HV5
Read more about DIN 267 Mechanical properties for Nuts

22 November 2021
Selected small sizes Dimension (d) M4 M5 M6 M8 M10 Thread pitch (pa) 0.7 0.8 1 1.25 1.5 m 2.9-3.2 3.7-4 4.7-5 6.14-6.5 7.64-8 dw (min) 5.8 6.8 8.8 11.3 15.3 s 6.78-7 7.78-8 9.78-10 12.73-13 16.73-17 e (min) 7.66 8.79 11.05 14.38 18.9 Selected standard sizes Dimension (d) M12 M16 M20 M22 M24 M27 M30 M33 M36 Thread pitch (pa) 1.75 2 2.5 2.5 3 3 3.5 3.5 4 m 9.
Read more about DIN 934 Hexagon nuts - Basic dimensions

07 November 2021
Type FF – FloorFast – Lindapter Size Product Code Floorplate Thickness t [mm] Flange Thickness Standard [mm] Hexagon key [mm] M08 FF08 4.5-12 3-15 5 M10 FF10 5-12 3-15 6 M12 FF12 6-12 3-15 8 Type FF FloorFast - Datasheet & Installation Guide See more in our products section for Fixings from Lindapter DownloadPDF
Read more about Lindapter FloorFast - basic dimensions

07 November 2021
Type LB2 – Lindibolt 2 – Lindapter Bolt Size Z Product Code Length Y [mm] Hole d [mm] Clamp length W [mm] Projection P [mm] M10 LB10 74 11-11.5 7-30 7.5-10 M12 LB12 85 13-13.5 10-36 9-12 M16 LB16 105 17-17.5 12-48 12-16 M20 LB20 128 21-21.5 14-60 15-20 M24 LB24 158 25-25.5 18-72 18-24 Type LB2 – Lindibolt™ 2 - Datasheet & Installation Guide See more in our products section for Fixings from Lindapter DownloadPDF
Read more about Lindapter Lindibolt 2 - basic dimensions

22 July 2021
Selected sizes used for CE (UKCA) Marking under BS EN 14399 Size (d) M12 M16 M20 M22 M24 M27 M30 M36 d1 13-13,27 17-17,27 21-21,33 23-23,33 25-25,33 28-28,52 31-31,62 37-37,62 d2 23,48-24 29,48-30 36,38-37 38,38-39 43,38-44 49,00-50 54,80-56 64,80-66 h (nom.) 3 4 4 4 4 5 5 6 h 2,7-3,3 3,7-4,3 3,7-4,3 3,7-4,3 3,7-4,3 4,4-5,6 4,4-5,6 5,4-6,6 Dimensions in millimetres For use with BS EN 14399 High-strength structural bolting assemblies for preloading DownloadPDF
Read more about BS EN 14399-5 Plain washers - Basic dimensions

31 July 2018
Calculation of thread lengths Typical, unless specified in a product standard, dimensions for thread lengths (b) is calculated as follow: for l <= 125 mm: b = 2d + 6mm for 125 mm < l <= 200 mm: b = 2d + 12mm for l > 200mm: b = 2d + 25mm Where l is length of the bolt and b is the threaded part of the bolt. For bolt, where lengths l <= 0.
Read more about ISO 888 Thread lengths for ISO metric fasteners (bolts)

23 July 2018
Dimensions of T-head (tee-head) bolt and nut Size in. A ±0,05 B +0,030 -0,074 C +0,25 -0,05 D* +3 -0 F H +0,00 –(as spec.) J +0,15 -0,03 R max. ⅝ x 3 1,50 0,625 3,0 2,00 0,625±0,04 1,062 -0,04 0,625 0,312 ¾ x 3½ 1,75 0,750 3,5 2,50 0,750±0,06 1,250 -0,06 0,750 0,375 ¾ x 4 1,75 0,750 4,0 3,00 0,750±0,06 1,250 -0,06 0,750 0,375 ¾ x 4½ 1,75 0,750 4,5 3,00 0,750±0,06 1,250 -0,06 0,750 0,375 ¾ x 5 1,75 0,750 5,0 3,00 0,750±0,06 1,250 -0,06 0,750 0,375 1 x 5½ 2,25 1,000 5,5 3,00 1,000±0,08 1,625 -0,08 1,000 0,500 1 x 6 2,25 1,000 6,0 3,00 1,000±0,08 1,625 -0,08 1,000 0,500 1¼ x 6 2,50 1,250 6,0 3,50 1,250±0,08 2,000 -0,08 1,250 0,625 1¼ x 6½ 2,50 1,250 6,5 3,5 1,250±0,08 2,000 -0,08 1,250 0,625 *) Bolts with dimension C longer than listed above are assumed to use the same thread length requirements as the longest specified.
Read more about Technical specification for T-head bolts (ANSI/AWWA C111/A21.11)