Retaining Rings - Internal - Spiral Rings - Heavy Duty - Stainless Steel

6 Products in this selection
  • Includes AHI / WHM / AS3215 / Spirolox RRN / MIL-R-27426B2 - Stainless Steel.
  • Heavy duty design for use with NAS669-670 deep grooves in applications like double row and tapered roller bearings.
  • Requires no tools for removal.
  • Equivalent to Associated Spring: AHI, Smalley: WHM, Spirolox and Ramsey: RRN, Aerospace AS3215, MIL-R-27426B2
Additional resources:
Spiral Rings and Snap Rings PDF
A more concise listing may be found on the Smallparts store at Retaining Rings - Internal - Spiral Rings - Heavy Duty - Stainless Steel. Smallparts promote the most popular MBA products.
Housing Bore (B) Clip Thickness (T) Groove Dia. (Dg) Approx. Loose Circlip OD (Dr) Radial Wall (S) Groove Width (W) Indicative
Image
Housing Bore (B)
12.70
mm

(0.5 in.)
Clip Thickness (T)
0.89
mm
+/- 0.05
(0.035 in.)
Groove Dia. (Dg)
13.46
mm

(0.53 in.)
Approx. Loose Circlip OD (Dr)
13.55
mm
+ 0.33 / - 0.00
Radial Wall (S)
1.14
mm
+/- 0.10
Groove Width (W)
1.03
mm
+/- 0.05
Internal Retaining Rings - 12.7x0.89x13.46 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Approx. Loose Clip ID: 11.27 +/- 0.04   Groove Depth (d): 0.38   
Part Number: RRN-050-S02 (9 Pcs) Internal Retaining Rings - 12.7x0.89x13.46 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Sun, Jun 08, 2025
$14.05 AUD
$14.05 AUD
Per 9
Housing Bore (B) Clip Thickness (T) Groove Dia. (Dg) Approx. Loose Circlip OD (Dr) Indicative
Image
Housing Bore (B)
12.70
mm

(0.5 in.)
Clip Thickness (T)
0.89
mm
+/- 0.05
(0.035 in.)
Groove Dia. (Dg)
13.46
mm

(0.53 in.)
Approx. Loose Circlip OD (Dr)
13.55
mm
+ 0.33 / - 0.00
Internal Retaining Rings - 12.7x0.89x13.46 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Radial Wall (S): 1.14 mm +/- 0.10    Groove Width (W): 1.03 mm +/- 0.05   Approx. Loose Clip ID: 11.27 +/- 0.04   Groove Depth (d): 0.38   
Part Number: RRN-050-S02 (9 Pcs) Internal Retaining Rings - 12.7x0.89x13.46 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Sun, Jun 08, 2025
$14.05 AUD
$14.05 AUD
Per 9
View the product page first if you are unsure.
Housing Bore (B)
15.88
mm

(0.625 in.)
Clip Thickness (T)
0.89
mm
+/- 0.05
(0.035 in.)
Groove Dia. (Dg)
16.89
mm

(0.665 in.)
Approx. Loose Circlip OD (Dr)
16.94
mm
+ 0.33 / - 0.00
Radial Wall (S)
1.40
mm
+/- 0.10
Groove Width (W)
1.03
mm
+/- 0.05
Internal Retaining Rings - 15.88x0.89x16.89 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Approx. Loose Clip ID: 14.14 +/- 0.04   Groove Depth (d): 0.51   
Part Number: RRN-062-S02 (100 Pcs) Internal Retaining Rings - 15.88x0.89x16.89 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Fri, Jun 20, 2025
$563.59 AUD
$563.59 AUD
Per 100
Housing Bore (B)
15.88
mm

(0.625 in.)
Clip Thickness (T)
0.89
mm
+/- 0.05
(0.035 in.)
Groove Dia. (Dg)
16.89
mm

(0.665 in.)
Approx. Loose Circlip OD (Dr)
16.94
mm
+ 0.33 / - 0.00
Internal Retaining Rings - 15.88x0.89x16.89 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Radial Wall (S): 1.40 mm +/- 0.10    Groove Width (W): 1.03 mm +/- 0.05   Approx. Loose Clip ID: 14.14 +/- 0.04   Groove Depth (d): 0.51   
Part Number: RRN-062-S02 (100 Pcs) Internal Retaining Rings - 15.88x0.89x16.89 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Fri, Jun 20, 2025
$563.59 AUD
$563.59 AUD
Per 100
View the product page first if you are unsure.
Housing Bore (B)
19.05
mm

(0.75 in.)
Clip Thickness (T)
0.89
mm
+/- 0.05
(0.035 in.)
Groove Dia. (Dg)
20.22
mm

(0.796 in.)
Approx. Loose Circlip OD (Dr)
20.33
mm
+ 0.33 / - 0.00
Radial Wall (S)
1.65
mm
+/- 0.10
Groove Width (W)
1.03
mm
+/- 0.05
Internal Retaining Rings - 19.05x0.89x20.22 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Approx. Loose Clip ID: 17.03 +/- 0.04   Groove Depth (d): 0.58   
Part Number: RRN-075-S02 (3 Pcs) Internal Retaining Rings - 19.05x0.89x20.22 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Sun, Jun 08, 2025
$14.50 AUD
$14.50 AUD
Per 3
Housing Bore (B)
19.05
mm

(0.75 in.)
Clip Thickness (T)
0.89
mm
+/- 0.05
(0.035 in.)
Groove Dia. (Dg)
20.22
mm

(0.796 in.)
Approx. Loose Circlip OD (Dr)
20.33
mm
+ 0.33 / - 0.00
Internal Retaining Rings - 19.05x0.89x20.22 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Radial Wall (S): 1.65 mm +/- 0.10    Groove Width (W): 1.03 mm +/- 0.05   Approx. Loose Clip ID: 17.03 +/- 0.04   Groove Depth (d): 0.58   
Part Number: RRN-075-S02 (3 Pcs) Internal Retaining Rings - 19.05x0.89x20.22 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Sun, Jun 08, 2025
$14.50 AUD
$14.50 AUD
Per 3
View the product page first if you are unsure.
Housing Bore (B)
25.40
mm

(1 in.)
Clip Thickness (T)
1.07
mm
+/- 0.05
(0.042 in.)
Groove Dia. (Dg)
27.08
mm

(1.066 in.)
Approx. Loose Circlip OD (Dr)
27.10
mm
+ 0.33 / - 0.00
Radial Wall (S)
2.16
mm
+/- 0.10
Groove Width (W)
1.21
mm
+/- 0.07
Internal Retaining Rings - 25.4x1.07x27.08 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Approx. Loose Clip ID: 22.78 +/- 0.04   Groove Depth (d): 0.84   
Part Number: RRN-100-S02 (5 Pcs) Internal Retaining Rings - 25.4x1.07x27.08 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Sun, Jun 08, 2025
$15.86 AUD
$15.86 AUD
Per 5
Housing Bore (B)
25.40
mm

(1 in.)
Clip Thickness (T)
1.07
mm
+/- 0.05
(0.042 in.)
Groove Dia. (Dg)
27.08
mm

(1.066 in.)
Approx. Loose Circlip OD (Dr)
27.10
mm
+ 0.33 / - 0.00
Internal Retaining Rings - 25.4x1.07x27.08 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Radial Wall (S): 2.16 mm +/- 0.10    Groove Width (W): 1.21 mm +/- 0.07   Approx. Loose Clip ID: 22.78 +/- 0.04   Groove Depth (d): 0.84   
Part Number: RRN-100-S02 (5 Pcs) Internal Retaining Rings - 25.4x1.07x27.08 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Sun, Jun 08, 2025
$15.86 AUD
$15.86 AUD
Per 5
View the product page first if you are unsure.
Housing Bore (B)
25.98
mm

(1.023 in.)
Clip Thickness (T)
1.07
mm
+/- 0.05
(0.042 in.)
Groove Dia. (Dg)
27.72
mm

(1.091 in.)
Approx. Loose Circlip OD (Dr)
27.72
mm
+ 0.33 / - 0.00
Radial Wall (S)
2.16
mm
+/- 0.10
Groove Width (W)
1.21
mm
+/- 0.07
Internal Retaining Rings - 25.98x1.07x27.72 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Approx. Loose Clip ID: 23.4 +/- 0.04   Groove Depth (d): 0.86   
Part Number: RRN-102-S02 (2 Pcs) Internal Retaining Rings - 25.98x1.07x27.72 mm - Stainless Steel 302/304 Similar to A2, 18-8
5 units (10 pcs) Available Immediately | Further orders can be expected around Sun, Jun 08, 2025
$15.68 AUD
$15.68 AUD
Per 2
Housing Bore (B)
25.98
mm

(1.023 in.)
Clip Thickness (T)
1.07
mm
+/- 0.05
(0.042 in.)
Groove Dia. (Dg)
27.72
mm

(1.091 in.)
Approx. Loose Circlip OD (Dr)
27.72
mm
+ 0.33 / - 0.00
Internal Retaining Rings - 25.98x1.07x27.72 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Radial Wall (S): 2.16 mm +/- 0.10    Groove Width (W): 1.21 mm +/- 0.07   Approx. Loose Clip ID: 23.4 +/- 0.04   Groove Depth (d): 0.86   
Part Number: RRN-102-S02 (2 Pcs) Internal Retaining Rings - 25.98x1.07x27.72 mm - Stainless Steel 302/304 Similar to A2, 18-8
5 units (10 pcs) Available Immediately | Further orders can be expected around Sun, Jun 08, 2025
$15.68 AUD
$15.68 AUD
Per 2
View the product page first if you are unsure.
Housing Bore (B)
50.80
mm

(2 in.)
Clip Thickness (T)
1.58
mm
+/- 0.08
(0.062 in.)
Groove Dia. (Dg)
53.90
mm

(2.122 in.)
Approx. Loose Circlip OD (Dr)
54.20
mm
+ 0.51 / - 0.00
Radial Wall (S)
4.01
mm
+/- 0.10
Groove Width (W)
1.78
mm
+/- 0.13
Internal Retaining Rings - 50.8x1.58x53.9 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Approx. Loose Clip ID: 46.18 +/- 0.05   Groove Depth (d): 1.55   
Part Number: RRN-200-S02 Internal Retaining Rings - 50.8x1.58x53.9 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Sun, Jun 08, 2025
$16.41 AUD
$16.41 AUD
Each
Housing Bore (B)
50.80
mm

(2 in.)
Clip Thickness (T)
1.58
mm
+/- 0.08
(0.062 in.)
Groove Dia. (Dg)
53.90
mm

(2.122 in.)
Approx. Loose Circlip OD (Dr)
54.20
mm
+ 0.51 / - 0.00
Internal Retaining Rings - 50.8x1.58x53.9 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Radial Wall (S): 4.01 mm +/- 0.10    Groove Width (W): 1.78 mm +/- 0.13   Approx. Loose Clip ID: 46.18 +/- 0.05   Groove Depth (d): 1.55   
Part Number: RRN-200-S02 Internal Retaining Rings - 50.8x1.58x53.9 mm - Stainless Steel 302/304 Similar to A2, 18-8
Out of Stock | Backorder Now | Orders can be expected around Sun, Jun 08, 2025
$16.41 AUD
$16.41 AUD
Each
View the product page first if you are unsure.