- 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 | $128.00 | $124.00 | $269.00 | 2-1/2 |
(19.05mm | 24.05mm) | X | .000060 | 109.00 | 105.00 | 231.00 | 1/2"Hex |
Go 1-1/4" | Long | Y | .000090 | 94.00 | 90.00 | 201.00 | 4" Lg |
Nogo 3/4" | Long | Z | .000120 | 80.00 | 76.00 | 173.00 | $17.00 |
.947" | 1.135" | XX | .000030 | $130.00 | $126.00 | $274.00 | 3-1/2 |
(24.05mm | 28.83mm) | X | .000060 | 111.00 | 107.00 | 236.00 | 5/8"Hex |
Go 1-3/8" | Long | Y | .000090 | 96.00 | 92.00 | 206.00 | 4" Lg |
Nogo 3/4" | Long | Z | .000120 | 82.00 | 78.00 | 178.00 | $18.00 |
1.135" | 1.510" | XX | .000030 | $140.00 | $135.00 | $295.00 | 4-1/2 |
(28.83mm | 38.35mm) | X | .000060 | 119.00 | 114.00 | 253.00 | 13/16"Hex |
Go 1-1/2" | Long | Y | .000090 | 105.00 | 100.00 | 225.00 | 4" Lg |
Nogo 3/4" | Long | Z | .000120 | 92.00 | 87.00 | 199.00 | $20.00 |
1.510" | 2.010" | XX | .000040 | $160.00 | $153.00 | $336.00 | 5-1/2 |
(38.35mm | 51.05mm) | X | .000080 | 136.00 | 129.00 | 288.00 | 1" Hex |
Go 1-7/8" | Long | Y | .000120 | 123.00 | 116.00 | 262.00 | 4-1/4" Lg |
Nogo 7/8" | Long | Z | .000160 | 110.00 | 103.00 | 236.00 | $23.00 |
2.010" | 2.510" | XX | .000040 | $190.00 | $182.00 | $397.00 | 6 |
(51.05mm | 63.75mm) | X | .000080 | 162.00 | 154.00 | 341.00 | 1-1/8"Hex |
Go 2" | Long | Y | .000120 | 146.00 | 138.00 | 309.00 | 5" Lg |
Nogo 7/8" | Long | Z | .000160 | 130.00 | 122.00 | 277.00 | $25.00 |
2.510" | 3.010" | XX | .000050 | $235.00 | $220.00 | $484.00 | 7 |
(63.75mm | 76.45mm) | X | .000100 | 200.00 | 185.00 | 414.00 | 1-1/4"Hex |
Go 2" | Long | Y | .000150 | 179.00 | 164.00 | 372.00 | 6" Lg |
Nogo 1" | Long | Z | .000200 | 160.00 | 145.00 | 334.00 | $29.00 |
3.010" | 3.510" | XX | .000050 | $285.00 | $250.00 | $564.00 | 7 |
(76.45mm | 89.15mm) | X | .000100 | 243.00 | 213.00 | 485.00 | 1-1/4"Hex |
Go 2" | Long | Y | .000150 | 219.00 | 189.00 | 437.00 | 6" Lg |
Nogo 1" | Long | Z | .000200 | 195.00 | 165.00 | 389.00 | $29.00 |
3.510" | 4.010" | XX | .000050 | $339.00 | $299.00 | $667.00 | 7 |
(89.15mm | 101.85mm) | X | .000100 | 288.00 | 248.00 | 565.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000150 | 263.00 | 223.00 | 515.00 | 6" Lg |
Nogo 1" | Long | Z | .000200 | 239.00 | 199.00 | 467.00 | $29.00 |
4.010" | 4.510" | XX | .000050 | $399.00 | $349.00 | $777.00 | 7 |
(101.85mm | 114.55mm) | X | .000100 | 340.00 | 290.00 | 659.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000150 | 314.00 | 264.00 | 607.00 | 6" Lg |
Nogo 1" | Long | Z | .000200 | 289.00 | 239.00 | 557.00 | $29.00 |
4.510" | 5.010" | XX | .000065 | $459.00 | $399.00 | $887.00 | 7 |
(114.55mm | 127.25mm) | X | .000130 | 391.00 | 331.00 | 751.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000190 | 365.00 | 305.00 | 699.00 | 6" Lg |
Nogo 1" | Long | Z | .000250 | 339.00 | 279.00 | 647.00 | $29.00 |
5.010" | 5.510" | XX | .000065 | $524.00 | $454.00 | $1,007.00 | 7 |
(127.25mm | 139.95mm) | X | .000130 | 446.00 | 376.00 | 851.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000190 | 419.00 | 349.00 | 797.00 | 6" Lg |
Nogo 1" | Long | Z | .000250 | 394.00 | 324.00 | 747.00 | $29.00 |
5.510" | 6.010" | XX | .000065 | $589.00 | $509.00 | $1,127.00 | 7 |
(139.95mm | 152.65mm) | X | .000130 | 501.00 | 421.00 | 951.00 | 1-1/4"Hex |
Go 2-1/8" | Long | Y | .000190 | 472.00 | 392.00 | 893.00 | 6" Lg |
Nogo 1" | Long | Z | .000250 | 444.00 | 364.00 | 837.00 | $29.00 |