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DYWIDAG-Formties  ›  Products  ›  Nuts and Couplers

Nuts and Couplers

Flanged Wing Nut

The Flanged Wing Nut, which is available in five different diameters, differs from the Wing Nut by a larger pedestal allowing a direct bearing on walings. It can be screwed on or loosened using a hexagon wrench, threadbar or hammer.

DSI Flanged Wing Nut
DSI Flanged Wing Nut

Article No.Bar ØPlate ØHeightHexHole Ø1)Weight
[mm][mm][mm][mm][mm][kg/pc.]
12 F 207212705024-0.45
15 F 2072/7015705327≤350.53
15 F 2072/9015905327≤350.56
15 F 2072/100151005327≤350.70
15 F 2072/110151105327≤350.80
15 F 2072/130151305327≤350.90
20 F 2072/130201306536≤401.53

1) Maximum diameter of the hole

Cast, galvanized

Slope Plate

Like the Combination Plate, the Slope Plate also features a wing nut that is undetachable from the plate. In the case of the Slope Plate, both the plate and the nut are cast. The articulation of the wing nut is approx. 15° for square plates and 5° for round plates.

DSI Slope Plate
DSI Slope Plate

Article No. Bar ØPlateHeightHexArticulation Weight
[mm][mm][mm][mm][°][kg/pc.]
15 F 102615120 x 1206527max 151.10
15 F 103015Ø 1206527max 51.00
20 F 103020Ø 1308536max 101.52

Galvanized, for inclined formwork
15 F 1026/15 F 1030: Casts
20 F 1030: Forged
15 F 1026 and 20 F 1030 for the use with steel walings

Combination Plate

Combination Plates consist of a waler plate and a forged wing nut that are articulated (max. 5°) but undetachable. The load capacity for wood and steel walings corresponds to the values of the base plates.

DSI Combination Plate
DSI Combination Plate

Article No.Bar ØPlateHexWeight
[mm][mm][mm][kg/pc.]
15 F 102015120 x 120 x 10271.42
15 F 102115140 x 100 x 10271.42
15 F 102315200 x 150 x 10272.70

Galvanized, nut: forged, plate: steel S235,
max. articulation of nut: 5°
Working load 30kN if supported on timber
Working load 90kN if use with steel walings

Pressed Waler Plate

Pressed Waler Plates are used for timber or steel walings in conjunction with a winged nut or a hex nut for load transfer. The embossing of the plate increases its rigidity. Load capacity depends on the contact area, the admissible bearing pressure and the threadbar that is used.

DSI Pressed Waler Plate
DSI Pressed Waler Plate

Article No.Bar ØPlateHole ØWeight
[mm][mm][mm][kg/pc.]
15 F 206215140 x 100 x 10201.15
15 F 206615120 x 120 x 10201.10
15 F 209715200 x 150 x 10202.30

Galvanized, steel grade S235 or similar,
15 F 2062: For use with steel waling
15 F 2066: Working load of 20kN if supported on timber
15 F 2097: Working load of 50kN if supported on timber

Flat Bearing Plate

Flat Plates are used for timber or steel walings in conjunction with a winged nut or a hex nut for load transfer. Load capacity depends on the contact area, the admissible bearing pressure and the threadbar that is used.

DSI Flat Bearing Plate
DSI Flat Bearing Plate

Article No.Bar ØDimensions*Hole ØWeight
[mm][mm][mm][kg/pc.]
15 F 212215120 x 120 x 15201.60
20 F 212220120 x 120 x 20252.15
26 E 212226.5150 x 120 x 30324.00

* Further dimensions available on request

All Bearing Plates are also available galvanized > Article No …/V
(example: 15 F 2122/V)

Wing Nut

With different Waler Plates, Wing Nuts can be used as anchor nuts both for timber and steel walings. They can be fixed and loosened using a hexagon wrench or a threadbar. If necessary, a clamping effect can be attained or overcome by applying hammer strokes to the wings.

DSI Wing Nut

Article No.Bar ØHeightHexWeight
[mm][mm][mm][kg/pc.]
12 F 20711250240.19
15 F 20711555270.35
20 F 21772060360.48
26 E 217726.565460.87

Cast, galvanized

Hex Nut

Similar to Wing Nuts, Hex Nuts can be used as anchor nuts in conjunction with a Waler Plate or a Flat Bearing Plate.

DSI Hex Nut

Article No.Bar ØLengthHexWeldableWeight
[mm][mm][mm][kg/pc.]
Hex Nuts - designed to take the full bar load1)
15 F 2002/50155030Yes0.22
15 F 2002/70157030Yes0.30
15 VA 2002/502)1550300.22
15 F 2002/50/G3)1550300.19
20 F 2002/70207036Yes0.40
26 E 2002/601)26.56046Yes0.60
26 E 2002/8026.58046Yes0.80
Lock Nuts – designed for securing, not for taking bar loads
15 F 2040/30153030Yes0.15
20 F 2040/30203036Yes0.16
26 E 2040/3026.53046Yes0.30

1) Working load of 26 E 2002/60: 200kN
2) Stainless Steel, grade VA
3) Cast, galvanized

All Hex Nuts are also available galvanized > Article No. …/V
(example: 15 F 2002/50/V)

Counter Nut/Square Nut

Hex Nuts with low heights are used as counter nuts in order to achieve a slip-free bar connection despite the coarse thread. They are only designed for transferring the counter moment and cannot be used as anchor nuts.

DSI Counter Nut/Square Nut

Article No.Bar ØLengthHexWeight
[mm][mm][mm][kg/pc.]
15 F 2028/351)1535300.18
15 F 2028/601560300.32

1) Lock Nut, not designed to take the full load of the Threadbar

All Square Nuts are also available galvanized > Article No. …/V
(example: 15 F 2028/35/V)

Couplers

We offer different couplers for the force-fit connection of two threadbars. A stop pin in the middle of the coupler ensures an equal screwing-in length of both bars. Two fixed threadbars can be connected and tensioned using a turnbuckle splice.

Hex Couplers

DSI Hex Coupler

Article No.Bar ØLengthHexWeight
[mm][mm][mm][kg/pc.]
15 F 2002/901)1590300.40
15 F 300515105300.45
20 F 300520130360.74
26 E 3005/1202)26.5120461.10
26 E 3005/15026.5150461.38

1) Working load of 15 F 2002/90: 80kN
2) Working load of 26 E 3005/120: 200kN

Screwing-in length is guaranteed by stop pin
All Couplers are also available galvanized > Article No. …/V
(example: 15 F 3005/V)

Round Couplers

DSI Round Coupler

Article No.Bar ØLengthDiameterWeight
[mm][mm][mm][kg/pc.]
15 F 300315105300.40
20 F 300320130400.85
26 E 300326.5150501.50

Screwing-in length is guaranteed by stop pin
All Couplers are also available galvanized > Article No. …/V
(example: 15 F 3003/V)

Turnbuckle Splice

DSI Turnbuckle Splice

Article No.Bar ØLengthHexWeight
[mm][mm][mm][kg/pc.]
15 F 3013/1415185411.40
20 F 3013/1420190461.90
26 E 3013/1426.5250603.80

For screwing and tensioning with two fixed bar ends
15 F 3013/14: Tensile force of 40kN if a torque of 0.5kNm is applied
20 F 3013/14: Tensile force of 70kN if a torque of 0.75kNm is applied
26 E 3013/14: Tensile force of 100kN if a torque of 1.0kNm is applied

Unless noted, working loads of Nuts and Couplers are as follows:
12 F …: 30kN; 15 F…: 90kN; 20 F…: 160kN; 26 E…: 250kN

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