- Hardened, stabilized blanks up to 2.510″
are carried in stock to facilitate fast deliveries - Chrome plate Quote on request
- Inch or metric sizes
- “One Complete” means a Go & Nogo member bolted to a double-end handle, marked for size and class.
- Certificate Calibration Info & Pricing
- Quantity 4 or more of identical size -8%
Trilocks
Features:

Range Above | Thru | Class | Tolerance in Inches | Go Member | Nogo Member | One Complete | Handles Only Number, Size, & Price |
.760" | .947" | XX | .000030 | $159.00 | $154.00 | $330.00 | 2-1/2 |
(19.05mm | 24.05mm) | X | .000060 | 136.00 | 131.00 | 284.00 | 1/2"Hex |
Go 1-1/4" | Long | Y | .000090 | 118.00 | 113.00 | 248.00 | 4" Lg |
Nogo 3/4" | Long | Z | .000120 | 101.00 | 96.00 | 214.00 | $17.00 |
.947" | 1.135" | XX | .000030 | $161.00 | $156.00 | $335.00 | 3-1/2 |
(24.05mm | 28.83mm) | X | .000060 | 138.00 | 133.00 | 289.00 | 5/8"Hex |
Go 1-3/8" | Long | Y | .000090 | 120.00 | 115.00 | 253.00 | 4" Lg |
Nogo 3/4" | Long | Z | .000120 | 103.00 | 98.00 | 219.00 | $18.00 |
1.135" | 1.510" | XX | .000030 | $173.00 | $167.00 | $360.00 | 4-1/2 |
(28.83mm | 38.35mm) | X | .000060 | 148.00 | 142.00 | 310.00 | 13/16"Hex |
Go 1-1/2" | Long | Y | .000090 | 131.00 | 125.00 | 276.00 | 4" Lg |
Nogo 3/4" | Long | Z | .000120 | 115.00 | 109.00 | 244.00 | $20.00 |
1.510" | 2.010" | XX | .000040 | $197.00 | $189.00 | $409.00 | 5-1/2 |
(38.35mm | 51.05mm) | X | .000080 | 168.00 | 160.00 | 351.00 | 1" Hex |
Go 1-7/8" | Long | Y | .000120 | 153.00 | 145.00 | 321.00 | 4-1/4" Lg |
Nogo 7/8" | Long | Z | .000160 | 137.00 | 129.00 | 289.00 | $23.00 |
2.010" | 2.510" | XX | .000040 | $233.00 | $223.00 | $481.00 | 6 |
(51.05mm | 63.75mm) | X | .000080 | 199.00 | 189.00 | 413.00 | 1-1/8"Hex |
Go 2" | Long | Y | .000120 | 181.00 | 171.00 | 377.00 | 5" Lg |
Nogo 7/8" | Long | Z | .000160 | 163.00 | 153.00 | 341.00 | $25.00 |
2.510" | 3.010" | XX | .000050 | $299.00 | $279.00 | $607.00 | 7 |
(63.75mm | 76.45mm) | X | .000100 | 257.00 | 237.00 | 523.00 | 1-1/4"Hex |
Go 2" | Long | Y | .000150 | 230.00 | 210.00 | 469.00 | 6" Lg |
Nogo 1" | Long | Z | .000200 | 204.00 | 184.00 | 417.00 | $29.00 |
3.010" | 3.510" | XX | .000050 | $349.00 | $314.00 | $692.00 | 7 |
(76.45mm | 89.15mm) | X | .000100 | 299.00 | 264.00 | 592.00 | 1-1/4"Hex |
Go 2" | Long | Y | .000150 | 268.00 | 233.00 | 530.00 | 6" Lg |
Nogo 1" | Long | Z | .000200 | 239.00 | 204.00 | 472.00 | $29.00 |
3.510" | 4.010" | XX | .000050 | $409.00 | $364.00 | $802.00 | 7 |
(89.15mm | 101.85mm) | X | .000100 | 348.00 | 303.00 | 680.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000150 | 317.00 | 272.00 | 618.00 | 6" Lg |
Nogo 1" | Long | Z | .000200 | 289.00 | 244.00 | 562.00 | $29.00 |
4.010" | 4.510" | XX | .000050 | $479.00 | $424.00 | $932.00 | 7 |
(101.85mm | 114.55mm) | X | .000100 | 408.00 | 353.00 | 790.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000150 | 378.00 | 323.00 | 730.00 | 6" Lg |
Nogo 1" | Long | Z | .000200 | 349.00 | 294.00 | 672.00 | $29.00 |
4.510" | 5.010" | XX | .000065 | $549.00 | $484.00 | $1,062.00 | 7 |
(114.55mm | 127.25mm) | X | .000130 | 467.00 | 402.00 | 898.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000190 | 437.00 | 372.00 | 838.00 | 6" Lg |
Nogo 1" | Long | Z | .000250 | 409.00 | 344.00 | 782.00 | $29.00 |
5.010" | 5.510" | XX | .000065 | $624.00 | $549.00 | $1,202.00 | 7 |
(127.25mm | 139.95mm) | X | .000130 | 531.00 | 456.00 | 1,016.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000190 | 502.00 | 427.00 | 958.00 | 6" Lg |
Nogo 1" | Long | Z | .000250 | 474.00 | 399.00 | 902.00 | $29.00 |
5.510" | 6.010" | XX | .000065 | $699.00 | $614.00 | $1,342.00 | 7 |
(139.95mm | 152.65mm) | X | .000130 | 595.00 | 510.00 | 1,134.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000190 | 566.00 | 481.00 | 1,076.00 | 6" Lg |
Nogo 1" | Long | Z | .000250 | 534.00 | 449.00 | 1,012.00 | $29.00 |