Worm drive hose clips (WDHC) - 430 grade stainless steel (W3)

Product description for worm drive hose clips
• These multi-range Torro (SGT) hose clips provide excellent clamping force.
• 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 hose clips (WDHC) - 430 grade stainless steel (W3)

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Benefits & features
• Provide excellent clamping force.
• 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.
• 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.
• 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.
• Phillips head screw.
• Designed & manufactured to DIN 3017.
• Asymmetrical construction.

Applications
• General purpose medium duty clamping applications.
• Applications under high mechanical loads.
• Oil lines.
• White goods industry.
• Sanitary installations.
• Engine construction.
• Commercial vehicles.
• Pressurized & depressurized vent & fuel lines.
• Cooling water lines.

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 9mm band width

Clamping range (in mm) Clamping range (in Inches) Total length in mm (screw & housing) Band thickness in mm
8-16 5/16 – 5/8 21.0 0.7
12-22 1/2 – 7/8 24.0 0.7
16-27 5/8 - 1 1/16 24.0 0.7
20-32 3/4-1 1/4 24.0 0.7
25-40 1 - 1 5/8 26.0 0.7
30-45 1 3/16 - 1 3/4 26.0 0.7
35-50 1 3/8 - 2 26.0 0.7
40-60 1 5/8 - 2 3/8 26.0 0.8
50-70 2 - 2 3/4 26.0 0.7
60-80 2 3/8 - 3 1/8 26.0 0.7
70-90 2 3/4 - 3 1/2 26.0 0.7
80-100 3 1/8 - 4 26.0 0.7
90-110 3 1/2 - 4 3/8 26.0 0.7
100-120 4 - 4 3/4 26.0 0.7
110-130 4 3/8 - 5 1/8 26.0 0.7
120-140 4 3/4 - 5 1/2 26.0 0.7
130-150 5 1/8 - 5 7/8 26.0 0.7
140-160 5 1/2 - 6 1/4 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 12mm band width

Clamping range (in mm) Clamping range (in Inches) Total length in mm (screw & housing) Band thickness in mm
16-27 5/8 - 1 1/16 30.0 0.8
20-32 3/4-1 1/4 30.0 0.8
25-40 1 - 1 5/8 30.0 0.8
30-45 1 3/16 - 1 3/4 30.0 0.8
35-50 1 3/8 - 2 30.0 0.8
40-60 1 5/8 - 2 3/8 30.0 0.8
50-70 2 - 2 3/4 30.0 0.8
60-80 2 3/8 - 3 1/8 30.0 0.8
70-90 2 3/4 - 3 1/2 36.0 0.8
80-100 3 1/8 - 4 36.0 0.8
90-110 3 1/2 - 4 3/8 36.0 0.8
100-120 4 - 4 3/4 36.0 0.8
110-130 4 3/8 - 5 1/8 36.0 0.8
120-140 4 3/4 - 5 1/2 36.0 0.8
130-150 5 1/8 - 5 7/8 36.0 0.8
140-160 5 1/2 - 6 1/4 36.0 0.8

MATERIAL KEY

W3
430 grade stainless steel band & screw.

Dia. (min)
Dia. (max)
Band width
Screw a/f
Part # Quantity Price Stock
8 mm 16 mm 9 mm 7 mm £ ?
12 mm 22 mm 9 mm 7 mm £ ?
16 mm 27 mm 9 mm 7 mm £ ?
20 mm 32 mm 9 mm 7 mm £ ?
25 mm 40 mm 9 mm 7 mm £ ?
30 mm 45 mm 9 mm 7 mm £ ?
32 mm 50 mm 9 mm 7 mm £ ?
40 mm 60 mm 9 mm 7 mm £ ?
50 mm 70 mm 9 mm 7 mm £ ?
60 mm 80 mm 9 mm 7 mm £ ?
70 mm 90 mm 9 mm 7 mm £ ?
80 mm 100 mm 9 mm 7 mm £ ?
90 mm 110 mm 9 mm 7 mm £ ?
16 mm 27 mm 12 mm 7 mm £ ?
20 mm 32 mm 12 mm 7 mm £ ?
25 mm 40 mm 12 mm 7 mm £ ?
30 mm 45 mm 12 mm 7 mm £ ?
35 mm 50 mm 12 mm 7 mm £ ?
40 mm 60 mm 12 mm 7 mm £ ?
50 mm 70 mm 12 mm 7 mm £ ?
60 mm 80 mm 12 mm 7 mm £ ?
70 mm 90 mm 12 mm 7 mm £ ?
80 mm 100 mm 12 mm 7 mm £ ?
90 mm 110 mm 12 mm 7 mm £ ?
100 mm 120 mm 12 mm 7 mm £ ?
110 mm 130 mm 12 mm 7 mm £ ?
120 mm 140 mm 12 mm 7 mm £ ?
130 mm 150 mm 12 mm 7 mm £ ?
140 mm 160 mm 12 mm 7 mm £ ?
150 mm 170 mm 12 mm 7 mm £ ?
160 mm 180 mm 12 mm 7 mm £ ?
170 mm 190 mm 12 mm 7 mm £ ?

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