Worm drive hose clips (WDHC) with built-in spring - 430 grade stainless steel (W3)

Product description for worm drive hose clips (WDHC) with built-in spring
• Dynamic.
• Torro (SGT) hose clips with a built-in spring on the inside of the band.
• Provide excellent clamping force, even under low temperatures.
• Designed so that the housing does not tilt when clip is tightened - eliminates any damage to the hose.
• High band tensile force & high fracture torque.
• Technically designed to offer an even distribution of clamping force - provides maximum sealing efficiency.
• Short housing saddle - for improved efficiency & even contact pressure.
• These industrial clips are setting standards for modern hose clip design.
• Accepted by all of the leading car manufacturers.
• The features of these clips are continuously being improved.
• Available in various clamping ranges.
• Available with a 9 mm band width or a 12 mm band width.
• Screw head size is 7mm a/f.
• Designed & manufactured to DIN 3017.
• Asymmetrical construction.

For more information, please see tabs below.
Most of these are stock items.

Please call 01283 554 780, for availability.

Worm drive with spring

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Benefits
• Provides excellent clamping force, even under low temperatures.
• Long-lasting automatic re-tensioning effect.
• Designed so that the housing does not tilt when clip is tightened - eliminates any damage to the hose.
• High band tensile force & high fracture torque.
• The clamping range & material is stamped onto the outside of the band - to eliminate errors.
• Technically designed to offer an even distribution of clamping force - provides maximum sealing efficiency.
• Short housing saddle - for improved efficiency & even contact pressure.
• Setting standards for modern hose clip design.
• Accepted by all of the leading car manufacturers.

Features
• Built-in spring on the inside of the band.
• The features of these clips are continuously being improved.
• Manufactured in W3 Stainless Steel.
• Available in various clamping ranges.
• Available with a 9 mm band width or a 12 mm band width.
• Screw head size is 7mm a/f.
• Designed & manufactured to DIN 3017.
• Asymmetrical construction.
• These clips have an automatic re-tensioning effect in the event of temperature change.
• Clamping range & material has been stamped onto the outside of the band.
• Technically designed to offer an even distribution of clamping force.
• Short housing saddle.

Applications
• General purpose medium duty clamping applications.
• Applications under extreme temperature changes.
• high mechanical loads.
• Oil lines.
• White goods industry.
• Sanitary installations.
• Engine construction.
• Commercial vehicles.
• Pressurized & depressurized vent & fuel lines.
• Suitable for cooling systems and intercoolers.
• We would recommend this clip for use with new hoses or where the hoses are exposed to extreme temperature changes.

Corrosion resistance

Material Corrosion resistance in salt spray testing
W3 Min. 200 h


British standard (5315) hose clip size

British standard (5315) hose clip size Clamping range (mm)
000 9.5 - 12
M00 11 - 16
00 13 - 20
0 16 - 22
0X 18 - 25
1A 22 - 30
1 25 - 35
1X 30 - 40
2A 35 - 50
2 40 - 55
2X 45 - 60
3 55 - 70
3X 60 - 80
4 70 - 90
4X 85 - 100
5 90 - 120
6 110 - 140
7 140 - 160
7” 160 - 180
8” 180 – 205
9” 205 – 230
10” 230 - 255
11” 255 - 280
12” 280 - 305
• Total width of clips = 13.0mm.
• Total height of clips = 11.0mm.
• W1's - inside of the band is smooth.
• W2's, W3's, W4's, W5's - inside of the band is stamped.

Table with torques Torro 9 W3

Diameter (mm) 8-16 12-22 16-27 20-32 25-40 30-45 35-50 40-60
Recommended tightening torque in Nm; 2 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5
No-load torque in Nm (max) 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7
Test torque in Nm 2.6 4 4 4 4 4 4 4
Fracture torque in Nm (min) 4 4.5 4.5 4.5 4.5 4.5 4.5 4.5
Diameter (mm) 50-70 60-80 70-90 80-100 90-110 100-120 110-130 120-140 130-150 140-160
Recommended tightening torque in Nm; 3 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5 3 +0.5
No-load torque in Nm (max) 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7
Test torque in Nm 4 4 4 4 4 4 4 4 4 4
Fracture torque in Nm (min) 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5

Technical information

Description Clamping range (in mm) Clamping range (in Inches) Total length in mm (screw & housing) Band thickness in mm
Torro 8-16 8-16 5/16 – 5/8 21.0 0.7
Torro 12-22 12-22 1/2 – 7/8 24.0 0.7
Torro 16-27 16-27 5/8 – 1 1/6 24.0 0.7
Torro 20-32 20-32 3/4 – 1 1/4 24.0 0.7
Torro 25-40 25-40 1 - 1 5/8 26.0 0.7
Torro 30-45 30-45 1 3/16 - 2 26.0 0.7
Torro 35-50 35-50 1 3/8 - 2 26.0 0.7
Torro 40-60 40-60 1 5/8 – 2 3/8 26.0 0.7
Torro 50-70 50-70 2 – 2 3/4 26.0 0.7
Torro 60-80 60-80 2 3/8 – 3 1/8 26.0 0.7
Torro 70-90 70-90 2 3/4 – 3 1/2 26.0 0.7
Torro 80-100 80-100 3 1/8 – 4 26.0 0.7
Torro 90-110 90-110 3 1/2 – 4 3/8 26.0 0.7
Torro 100-120 100-120 4 – 4 3/4 26.0 0.7
Torro 110-130 110-130 4 3/8– 5 1/8 26.0 0.7
• Total width of clips = 14.6mm.
• Total height of clips = 12.5mm.
• W1's, W2's, W3's - Inside of the band is smooth.
• W4's, W5's - inside of the band is stamped.

Table with torques Torro 12 W3

Diameter (mm) 16-27 20-32 25-40 30-45 35-50 40-60
Recommended tightening torque in Nm; 5 +0.5 5 +0.5 5 +0.5 5 +0.5 5 +0.5 5 +0.5
No-load torque in Nm (max) 1 1 1 1 1 1
Test torque in Nm 6.5 6.5 6.5 6.5 6.5 6.5
Fracture torque in Nm (min) 8.0 8.0 8.0 8.0 8.0 8.0
Diameter (mm) 50-70 60-80 70-90 80-100 90-110 100-120 110-130 120-140 130-150 140-160
Recommended tightening torque in Nm; 5 +0.5 5 +0.5 5 +0.5 5 +0.5 5 +0.5 5 +0.5 5 +0.5 5 +0.5 5 +0.5 5 +0.5
No-load torque in Nm (max) 1 1 1 1 1 1 1 1 1 1
Test torque in Nm 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5
Fracture torque in Nm (min) 8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5

Technical information

Description Clamping range (in mm) Clamping range (in Inches) Total length in mm (screw & housing) Band thickness in mm
Torro 16-27 16-27 5/8 – 1 1/16 30.0 0.8
Torro 20-32 20-32 3/4 – 1 1/4 30.0 0.8
Torro 25-40 25-40 1 - 1 5/8 30.0 0.8
Torro 30-45 30-45 1 3/16 – 1 3/4 30.0 0.8
Torro 35-50 35-50 1 3/8 - 2 30.0 0.8
Torro 40-60 40-60 1 5/8 – 2 3/8 30.0 0.8
Torro 50-70 50-70 2 – 2 3/4 30.0 0.8
Torro 60-80 60-80 2 3/8 – 3 1/8 30.0 0.8
Torro 70-90 70-90 2 3/4 – 3 1/2 36.0 0.8
Torro 80-100 80-100 3 1/8 – 4 36.0 0.8
Torro 90-110 90-110 3 1/2 – 4 3/8 36.0 0.8
Torro 100-120 100-120 4 – 4 3/4 36.0 0.8
Torro 110-130 110-130 4 3/8– 5 1/8 36.0 0.8
Torro 120-140 120-140 4 3/4– 5 1/2 36.0 0.8

MATERIAL KEY

W3
430 grade stainless steel band & screw.

Dia. (min)
Dia. (max)
Band width
Part # Quantity Price Stock
12 mm 22 mm 9 mm £ ?
16 mm 27 mm 9 mm £ ?
20 mm 32 mm 9 mm £ ?
23 mm 35 mm 9 mm £ ?
25 mm 40 mm 9 mm £ ?
30 mm 45 mm 9 mm £ ?
32 mm 50 mm 9 mm £ ?
40 mm 60 mm 9 mm £ ?
50 mm 70 mm 9 mm £ ?
60 mm 80 mm 9 mm £ ?
70 mm 90 mm 9 mm £ ?
80 mm 100 mm 9 mm £ ?
90 mm 110 mm 9 mm £ ?
30 mm 45 mm 12 mm £ ?
35 mm 50 mm 12 mm £ ?
40 mm 60 mm 12 mm £ ?
50 mm 70 mm 12 mm £ ?
60 mm 80 mm 12 mm £ ?
70 mm 90 mm 12 mm £ ?
80 mm 100 mm 12 mm £ ?
90 mm 110 mm 12 mm £ ?

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Subtotal

£3.43

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