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Spring Dowel Pin
Spring Dowel Pins:-

Spring dowel pins are slotted pin made from high carbon spring steel (EN-42J) material having 44- 51 HRC. They can also be manufactured from stainless steel material i.e. SS- 304, SS- 420, SS- 316 etc. Spring Dowel pin is accurately made to diameter greater than the drilled hole into which it is pressed. When inserted the elasticity of the material then exerting a continuous radial force over the full length of the pin. The purpose of the slot in the pins is to allow compression when inserted in the hole.

Advantages & Uses:-
  • A Spring Dowel pin is the most economical, quick, simple and easy fastening system, which is particularly suitable for bulk production.
  • It has shock & vibrating absorption capacity & can be removed and reutilize for maintenance.
  • It causes no interlocking and exerts less redial pressure reducing component damage and trouble free working.
  • It replaces rivets, bolts & washers, clevis pin and retaining ring as well as setscrew and other threaded components.
  • No special skill are required as pins are easy to insert either by hand or by automated assembly and it can be carried out quite safely with unskilled labours.
  • Non standard pin can also be manufactured to suit customer specific requirement.
  • It is used in countless application, in huge quantities and in widely ranging industries from automobile production to electronics.

To Order, indicate Dia of the Hole x Length, e.g SPRING DOWEL SLEEVES for Norm. Dia of Hole 4 mm x Length 28 mm order as SPRING DOWEL SLEEVES 4 mm x 28 mm DIN-1481/IS-5988 HEAVY.

DIN - 1481 IS 5988

NOMINAL DIAMETER 1 1.5 2 2.5 3 3.5 4 4.5 5 6 8 10 12 13
S 0.2 0.3 0.4 0.5 0.6 0.75 0.8 1 1 1.25 1.5 2 2.5 2.5
A 0.15 0.25 0.35 0.45 0.5 0.6 0.7 0.8 1.6 1.6 2 2 2 2
PRIOR TO FITTING D1
Tol.
D2~
1.2 1.7 2.3 2.8 3.3 3.8 4.4 4.9 5.4 6.4 8.5 10.5 12.5 13.5
0.1 0.2 0.3
0.8 1.1 1.5 1.8 2.1 2.3 2.8 2.9 3.4 3.9 5.5 6.5 7.5 8.5
NOMINAL DIAMETER 14 16 18 20 21 25 28 30 32 35 38 40 45 50
S 3 3 3.5 4 4 5 5.5 6 6 7 7.5 7.5 8.5 9.5
A 2 3 4
PRIOR TO FITTING D1
Tol.
D2~
14.5 16.5 18.5 20.5 21.5 25.5 28.5 30.5 32.5 35.5 38.5 40.5 45.5 50.5
0.3 0.4
0.5 8.5 11.5 12.5 13.5 15.5 17.5 18.5 20.5 21.5 23.5 25.5 28.5 31.5
FOR BOLT SIZE   M8 M10   M12 M14 M16   M18 M20 M22 M24 M27 M30
L
Tol.
4 TO 10 MM = 0.5 12 TO 50 MM= 1.0 52 TO 100 MM= 1.5

To Order, indicate Dia of the Hole x Length, e.g SPRING DOWEL SLEEVES for Norm. Dia of Hole 4 mm x Length 28 mm order as SPRING DOWEL SLEEVES 4 mm x 28 mm DIN-1481/IS-5988 LIGHT

DIN - 7346 IS 5988
NOMINAL DIAMETER 2 2.5 3 3.5 4 4.5 5 6 7 8 10 11 12 13
S 0.2 0.25 0.3 0.35 0.5 0.5 0.5 0.75 0.75 0.75 1 1 1 1.25
A 0.35 0.45 0.5 0.6 0.7 0.8 1.6 1.6 1.6 2 2 2 2 2
PRIOR TO FITTING D1
Tol.
D2~
2.3 2.8 3.3 3.8 4.4 4.8 5.4 6.4 7.5 8.5 10.5 11.5 12.5 13.5
0.1 0.2 0.3
1.9 2.3 2.7 3.1 3.4 3.8 4.4 4.9 6 7 8.5 9.5 10.5 11
NOMINAL 14 16 18 20 21 23 25 28 30 35 40 45 50  
DIAMETER                            
S 1.5 1.5 1.75 2 2 2 2 2.5 2.5 3.5 4 4 5  
A 2 2 2 2 2 3 3 3 3 3 4 4    
PRIOR TO FITTING D1
Tol.
D2~
14.5 16.5 18.5 20.5 21.5 23.5 25.5 28.5 30.5 35.5 40.5 45.5 50.5  
0.3 0.4
11.5 13.5 15 16.5 17.5 19.5 21.5 23.5 25.5 28.5 32.5 37.5 40.5  
L
Tol.
4 TO 10 MM = 0.5 12 TO 50 MM= 1.0 52 TO 100 MM= 1.5