products

Home / Products / Washers / Rings / DIN 984:2021 Internal Retaining Ring

DIN 984:2021 Internal Retaining Ring

DIN 984:2021 Internal Retaining Ring with Flange is installed in an internal bore groove to axially retain bearings, bushings, or internal components. The flanged design provides a more defined support boundary and is suitable for bore assemblies requiring reliable end positioning.

It is commonly used in gearbox housings, pump bodies, cylinders, bearing seats, and mechanical transmission components. The internal retaining ring saves space and simplifies the assembly structure without adding external fasteners.

Selection should consider bore diameter, groove geometry, tool access, and material elasticity. Rust-resistant or wear-resistant treatment can be specified to improve positioning stability during long-term service.

Contact Us
PREV：DIN 471 (-1):2011 External Fastener NEXT：DIN 5417 (M3200/SP):2011 Fastener

 

Dimensions unit: mm

Apertured0 16 17 18 19 20 22 23 24 25 26 27 28 30
s Max.=Nominal 1 1 1 1 1 1 1.2 1.2 1.2 1.2 1.2 1.2 1.2
Min. 0.94 0.94 0.94 0.94 0.94 0.94 1.14 1.14 1.14 1.14 1.14 1.14 1.14
d3 Nominal 17.3 18.3 19.5 20.5 21.5 23.5 24.6 25.9 26.9 28.5 29.1 30.1 32.1
Max. 17.66 18.72 19.92 20.92 21.92 23.92 25.02 26.32 27.32 28.92 29.6 30.6 32.6
Min. 17.2 18.17 19.37 20.37 21.37 23.37 24.39 25.69 26.69 28.29 28.85 29.85 31.85
a Max. 3.4 3.7 3.8 3.8 3.9 4 4.1 4.2 4.4 4.4 4.5 4.9 4.9
b ② ≈ 2 2.1 2.2 2.2 2.3 2.5 2.6 2.6 2.7 2.8 2.9 2.9 3
d5 Min. 1.7 1.7 1.7 2 2 2 2 2 2 2 2 2 2
Thousand piece weight (steel) ≈kg 0.72 0.8 0.9 0.99 1.06 1.28 1.48 1.6 1.72 2 2 2.1 2.35

 

Apertured0 32 35 36 38 40 42 44 45 47 48 50 52 55
s Max.=Nominal 1.2 1.5 1.5 1.5 1.75 1.75 1.75 1.75 1.75 1.75 2 2 2
Min. 1.14 1.44 1.44 1.44 1.69 1.69 1.69 1.69 1.69 1.69 1.93 1.93 1.93
d3 Nominal 34.4 37.8 38.8 40.8 43.5 45.5 47.5 48.5 50.5 51.5 54.2 56.2 59.2
Max. 34.9 38.3 39.3 41.3 44.4 46.4 48.4 49.4 51.6 52.6 55.3 57.3 60.3
Min. 34.15 37.55 38.55 40.55 43.11 45.11 47.11 48.11 50.04 51.04 53.74 55.74 58.74
a Max. 5.1 5.5 5.6 6.1 7.2 7.2 7.2 7.2 7.2 7.2 8.2 8.2 8.2
b ② ≈ 3.2 3.4 3.5 3.7 3.9 4.1 4.2 4.3 4.4 4.5 4.6 4.7 5
d5 Min. 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
Thousand piece weight (steel) ≈kg 2.5 4 4.15 4.4 5.3 6 6.45 6.6 6.9 7.5 8.5 9.4 9.75

 

Apertured0 57 58 60 62 65 67 70 72 75 80 85 90 95
s Max.=Nominal 2 2 2 2 2.5 2.5 2.5 2.5 2.5 2.5 3 3 3
Min. 1.93 1.93 1.93 1.93 2.43 2.43 2.43 2.43 2.43 2.43 2.92 2.92 2.92
d3 Nominal 61.2 62.2 64.2 66.2 69.2 71.5 74.5 76.5 79.5 85.5 90.5 95.5 100.5
Max. 62.3 63.3 65.3 67.3 70.3 72.6 75.6 77.6 80.6 86.8 91.8 96.8 101.8
Min. 60.74 61.74 63.74 65.74 68.74 71.04 74.04 76.04 79.04 84.96 89.96 94.96 99.96
a Max. 8.2 8.2 8.2 8.2 9.5 10.2 10.2 10.2 10.2 10.2 12.2 12.2 12.2
b ② ≈ 5.1 5.2 5.4 5.5 5.8 6 6.2 6.4 6.6 7 7.2 7.6 8.1
d5 Min. 2.5 2.5 2.5 2.5 3 3 3 3 3 3 3.5 3.5 3.5
Thousand piece weight (steel) ≈kg 11.6 12 12.7 12.8 16.7 18.6 20.2 21.2 22.6 25 30.1 35.5 40

 

Apertured0 100 110 115 120 125 130 140 150 160 170
s Max.=Nominal 3 4 4 4 4 4 4 4 4 4
Min. 2.92 3.9 3.9 3.9 3.9 3.9 3.9 3.9 3.9 3.9
d3 Nominal 105.5 117 122 127 132 137 147 158 169 179.5
Max. 106.8 118.3 123.5 128.5 133.5 138.5 148.5 159.5 170.5 181
Min. 104.96 116.46 121.37 126.37 131.37 136.37 146.37 157.37 168.37 178.87
a Max. 12.2 12.2 12.2 12.2 12.2 12.2 14.2 14.2 14.2 14.2
b ② ≈ 8.4 9 9.3 9.7 10 10.2 10.7 11.2 11.6 12.2
d5 Min. 3.5 3.5 3.5 3.5 4 4 4 4 4 4
Thousand piece weight (steel) ≈kg 43.5 73 82 87 92 102 112 123 133 145

① Material:

Spring steel C67S or C75S according to standard DIN EN 10132-4 (selected by manufacturer)

Hardness:

Shaft diameter ≤ 48 mm, 470 HV to 580 HV or 47 HRC to 54 HRC;

48 mm < shaft diameter ≤ 140mm, 435 HV to 530 HV or 44 HRC to 51 HRC.

Note: Hardness value is converted according to DIN EN ISO 18265

② Dimension b shall not exceed dimension a (max). 

OUR PRODUCTS

Related Products

Better Fastener Industry Co., Ltd.

ABOUT US

Hangzhou Better Fastener
Technology Limited

Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010.

The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.

With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.

Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery

OUR CERTIFICATE

Certificate Of Honour

  • Certificate
  • Certificate
  • Certificate
  • Certificate
  • Certificate
  • Certificate

NEWS

Latest News

  • What is a Screw?

    A screw is a fastening tool that utilizes the principle of an inclined spiral plane to join or secure objects together. Its core structure consists of a cylindrical body with continuous threads (like spiral ridges), typically featuring a head at one end for convenient rotation. When turned, the rotational motion is con...

    READ MORE +
  • What is a Nuts?

    Now that we've covered bolts, their "perfect partner" — the nut — is much easier to understand. Simply put, a nut is a small metal block or disc with a round hole in the center and internal threads on the wall of that hole. Its core function is to work with an externally threaded bolt to clamp two or more components to...

    READ MORE +
  • What is a Washers?

    Simply put, a washer is a thin, disc-shaped ring with a central hole, typically made of metal (such as carbon steel, stainless steel, or copper) or non-metallic materials (such as rubber, plastic, or asbestos). It is placed between the head of a bolt/nut and the surface of the workpiece, or at the junction between the ...

    READ MORE +
  • What is a Bolt?

    Simply put, a bolt is a cylindrical fastener with external threads. It works with a matching nut or is screwed directly into a threaded hole of the mating part to firmly hold two or more components together. To put it intuitively, think of it as a "metal nail." However, unlike a nail that is driven in with a hammer, a ...

    READ MORE +
X Facebook
Products News