Cylindrical Plain Ring Gages

STEEL AND CHROME RING GAGES
Size Range (From - To)STD.A.G.D. BlankBlank No.
InchesmmLength (Inches)O.D. (Inches)Length (mm)O.D. (mm)
0.070" - .0150"1.780mm- 3.810mm3/16"15/16"4.8 mm23.8 mm0
0.151" - 0.230"3.810 mm - 5.840 mm3/8"15/16"9.5 mm23.8 mm0
0.231" - 0.365"5.840 mm - 9.270 mm9/16"1 1/8"14.3 mm28.6 mm1
0.366" - 0.510"9.270 mm - 12.95 mm3/4"1-3/8"19.1 mm34.9 mm2
0.511" - 0.825"12.95 mm - 20.96 mm15/16"1-3/4"23.8 mm44.4 mm3
0.826" - 1.135"20.96 mm - 28.83 mm1-1/8"2-1/8"28.6 mm54.0 mm4
1.136" - 1.510"28.83 mm - 38.35 mm1 5/16"2-1/2"33.3 mm63.5 mm5
1.511" - 2.010"38.35 mm - 51.05 mm1-1/2"4"38.1 mm101.6 mm6
2.011" - 2.510"51.05 mm - 63.75 mm1-1/2"4-1/2"38.1 mm114.3 mm7
2.511" - 3.010"63.75 mm - 76.45 mm1-1/2"5"38.1 mm127.0 mm8
3.011" - 3.510"76.45 mm - 89.15 mm1-1/2"5-1/2"38.1 mm139.7 mm9
3.511" - 4.010"89.15 mm - 101.85 mm1-1/2"6-3/8"38.1 mm161.9 mm10
4.011" - 4.760"101.85 mm - 120.90 mm1-1/2"7-1/4"38.1 mm184.2 mm11
4.761" - 5.510"120.90 mm - 139.95 mm1-1/2"8-1/4"38.1 mm209.6 mm12
5.511" - 6.260"139.95 mm - 159.00 mm1-1/2"9-1/4"38.1 mm235.0 mm13
6.261" - 7.010"159.00 mm - 178.05 mm1-1/2"10-1/4"38.1 mm260.4 mm14
7.011" - 7.760"178.05 mm - 197.10 mm1-1/2"11-1/4"38.1 mm285.8 mm15
7.761" - 8.510"197.10 mm - 216.15 mm1-1/2"12-1/4"38.1 mm311.2 mm16
8.511" - 9.260"216.15 mm - 235.20 mm1-1/2"13-1/4"38.1 mm336.6 mm17
9.261" - 10.010"235.20 mm - 254.25 mm1-1/2"14-1/4"38.1 mm362.0 mm18
10.011" - 10.760"254.25 mm - 273.30 mm1-1/2"15-1/4"38.1 mm387.4 mm19
10.761" - 11.510"273.30 mm - 292.35 mm1-1/2"16-1/4"38.1 mm412.8 mm20
11.511" - 12.260"292.35 mm - 311.40 mm1-1/2"17-1/4"38.1 mm438.2 mm21
12.261" - 13.010"311.40 mm - 330.45 mm1-1/2"18-1/4"38.1 mm463.6 mm22
13.011" - 13.760"330.45 mm - 349.50 mm1-1/2"19-1/4"38.1 mm489.0 mm23
13.761" - 14.510"349.50 mm - 368.55 mm1-1/2"20-1/4"38.1 mm514.4 mm24
14.511" - 15.260"368.55 mm - 387.60 mm1-1/2"21-1/4"38.1 mm539.8 mm25
15.261" - 16.010"387.60 mm - 406.65 mm1-1/2"22-1/4"38.1 mm565.2 mm26

PMC Mercury Cylindrical Ring Gages are used to check external diameters of straight round parts and to set other gages, such as bore gages, internal micrometers and air gages.

PMC Mercury Cylindrical Ring Plain Gages are precision lapped for best accuracy and finish and are available in inch or metric and finishes of steel, chrome or solid carbide. Long form N.I.S.T. traceable certification is available. Please call 1-800-825-4272 and we will gladly prepare a quote. Cylindrical Plain Ring Gages are made to order. Please specify diameter in inch or metric, tolerance class, and application of tolerance – Go (minus), Not Go (plus) or Master (bilateral or split).

All sizes of steel and chrome ring gages are available in classes XX, X, Y, Z and ZZ.

(LINE DRAWING 1)
Furnished in sizes up to 1.510” the ring gages are thicker and the Not Go ring is identified by the groove around the outside diameter.

(LINE DRAWING 2)
Ring gages above 1.510” are thinner with a flange to reduce weight and increase rigidity.

CYLINDRICAL PLAIN RING GAGES TOLERANCES
Size Range (From - To)Tolerances (Inches)Outside Diameter (B)Thickness (C)Flange Thickness (H)Blank No.
InchesmmClass XXClass XClass YClass Z
0.059" - 0.150"1.50 mm - 3.81mm0.000020.000040.000070.000115/163/16none0
0.150" - 0.240"3.81 mm - 6.10 mm0.000020.000040.000070.000115/163/8none0
0.240" - 0.365"6.10 mm - 9.27 mm0.000020.000040.000070.00011 1/89/16none1
0.365" - 0.510"9.27 mm - 12.95 mm0.000020.000040.000070.00011 3/83/4none2
0.510" - 0.825"12.95 mm - 20.96 mm0.000020.000040.000070.00011 3/415/16none3
0.825" - 1.135"20.96 mm - 28.83 mm0.000030.000060.000090.000122 1/81 1/8none4
1.135" - 1.510"28.83 mm - 38.35 mm0.000030.000060.000090.000122 1/21 5/16none5
1.510" - 2.010"38.35 mm - 51.05 mm0.000040.000080.000120.0001641 1/21/26
2.010" - 2.510"51.05 mm - 63.75 mm0.000040.000080.000120.000164 1/21 1/29/167
2.510" - 3.010"63.75 mm - 76.45 mm0.000050.00010.000150.000251 1/25/88
3.010" - 3.510"76.45 mm - 89.15 mm0.000050.00010.000150.00025 1/21 1/211/169
3.510" - 4.010"89.15 mm - 101.85 mm0.000050.00010.000150.00026 3/81 1/23/410
4.010" - 4.510"101.85 mm - 114.55 mm0.000050.00010.000150.00027 1/41 1/27/811
4.510" - 4.760"114.55 mm - 120.90 mm0.0000650.000130.000190.000257 1/41 1/27/811

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