System of Measurement System of Measurement |
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Material Material |
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Head Type Head Type |
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![]() | Knob |
Lock Type Lock Type |
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End Type End Type |
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![]() | Spring-Loaded Ball |
Pin Type Pin Type |
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![]() | Quick Release |
Handle Material Handle Material |
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Number of Retaining Balls Number of Retaining Balls |
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Ball Material Ball Material |
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Minimum Hardness Minimum Hardness |
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Breaking Strength Breaking Strength |
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Button Style Button Style |
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Handle Finish Handle Finish |
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Spring Material Spring Material |
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Finish Finish |
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Shaft Type Shaft Type |
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![]() | Plain |
End Shape End Shape |
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![]() | Chamfered |
Keyed Double-Locking Quick-Release Pins

Use the key to unlock these pins, then press the button to release the spring-loaded retaining balls. Two-step locking prevents accidental removal. Use these pins in a hole as close to the diameter as possible, but not larger than the diameter at extended ball height. They are made of zinc yellow-chromate plated steel for good strength and some corrosion resistance. Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.
For technical drawings and 3-D models, click on a part number.
Usable Lg. | Dia. Tolerance | Dia. at Extended Ball Ht. | Min. Hardness | Breaking Strength, lbs. | Ball Material | Handle Material | Number of Keys Included | Each | |
Zinc Yellow-Chromate-Plated 4037 Alloy Steel | |||||||||
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1/4" Dia. | |||||||||
1" | -0.004" to -0.001" | 0.284" | Rockwell C33 | 8,200 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
1 1/2" | -0.004" to -0.001" | 0.284" | Rockwell C33 | 8,200 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 00000 |
5/16" Dia. | |||||||||
1 1/2" | -0.005" to -0.002" | 0.37" | Rockwell C33 | 12,800 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
2" | -0.005" to -0.002" | 0.37" | Rockwell C33 | 12,800 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
3/8" Dia. | |||||||||
1 1/2" | -0.004" to -0.001" | 0.435" | Rockwell C33 | 18,400 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
1 3/4" | -0.004" to -0.001" | 0.435" | Rockwell C33 | 18,400 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
2" | -0.004" to -0.001" | 0.435" | Rockwell C33 | 18,400 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
2 1/2" | -0.004" to -0.001" | 0.435" | Rockwell C33 | 18,400 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
1/2" Dia. | |||||||||
2" | -0.004" to -0.001" | 0.589" | Rockwell C33 | 32,500 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
2 1/2" | -0.004" to -0.001" | 0.589" | Rockwell C33 | 32,500 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
3" | -0.004" to -0.001" | 0.589" | Rockwell C33 | 32,500 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |
3 1/2" | -0.004" to -0.001" | 0.589" | Rockwell C33 | 32,500 | 440C Stainless Steel | Chrome-Plated Zinc | 2 | 000000000 | 000000 |