Head Type Head Type |
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![]() | Ring |
End Type End Type |
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![]() | Spring-Loaded Ball |
System of Measurement System of Measurement |
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Pin Type Pin Type |
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![]() | Quick Release |
Specifications Met Specifications Met |
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Material Material |
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Handle Material Handle Material |
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Spring Material Spring Material |
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Lock Type Lock Type |
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Ball Material Ball Material |
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Number of Retaining Balls Number of Retaining Balls |
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End Shape End Shape |
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![]() | Chamfered |
Passivation Passivation |
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Breaking Strength Breaking Strength |
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Shaft Type Shaft Type |
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![]() | Plain |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Ring-Grip Locking Push-Pull Quick-Release Pins

Also known as double-acting pins, these pins lock in place until you push the button or pull the ring to release the spring-loaded retaining balls. Use them in a hole as close to the diameter as possible, but not larger than the diameter at extended ball height. Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.
Pins meet NASM17990 specifications for handle style, material, and dimensions. They're made of 17-4 PH stainless steel for strength with some corrosion resistance, and passivated for added protection against corrosion and oxidation. They are magnetic.
For technical drawings and 3-D models, click on a part number.
Usable Lg. | Dia. at Extended Ball Ht. | Breaking Strength, lbs. | Specifications Met | Each | |
17-4 PH Stainless Steel | |||||
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3/16" Dia. | |||||
1" | 0.22" | 5,100 | MS17990C310, NASM17990, NAS1353C7C10D | 000000000 | 000000 |
2" | 0.22" | 5,100 | MS17990C320, NASM17990, NAS1353C7C20D | 000000000 | 00000 |
1/4" Dia. | |||||
1" | 0.289" | 9,200 | MS17990C410, NASM17990, NAS1354C7C10D | 000000000 | 00000 |
2" | 0.289" | 9,200 | MS17990C420, NASM17990, NAS1354C7C20D | 000000000 | 00000 |
3" | 0.289" | 9,200 | MS17990C430, NASM17990, NAS1354C7C30D | 000000000 | 00000 |
5/16" Dia. | |||||
1" | 0.375" | 14,400 | MS17990C510, NASM17990, NAS1355C7C10D | 000000000 | 00000 |
2" | 0.375" | 14,400 | MS17990C520, NASM17990, NAS1355C7C20D | 000000000 | 00000 |
3" | 0.375" | 14,400 | MS17990C530, NASM17990, NAS1355C7C30D | 000000000 | 00000 |
3/8" Dia. | |||||
1" | 0.44" | 20,500 | MS17990C610, NASM17990, NAS1356C7C10D | 000000000 | 00000 |
2" | 0.44" | 20,500 | MS17990C620, NASM17990, NAS1356C7C20D | 000000000 | 00000 |
3" | 0.44" | 20,500 | MS17990C630, NASM17990, NAS1356C7C30D | 000000000 | 00000 |
1/2" Dia. | |||||
2" | 0.594" | 36,500 | MS17990C820, NASM17990, NAS1358C7C20D | 000000000 | 00000 |
3" | 0.594" | 36,500 | MS17990C830, NASM17990, NAS1358C7C30D | 000000000 | 00000 |
4" | 0.594" | 36,500 | MS17990C840, NASM17990, NAS1358C7C40D | 000000000 | 00000 |
5/8" Dia. | |||||
1" | 0.75" | 57,500 | MS17990C1010, NASM17990, NAS1360C7C10D | 000000000 | 00000 |
2" | 0.75" | 57,500 | MS17990C1020, NASM17990, NAS1360C7C20D | 000000000 | 00000 |
3" | 0.75" | 57,500 | MS17990C1030, NASM17990, NAS1360C7C30D | 000000000 | 00000 |
4" | 0.75" | 57,500 | MS17990C1040, NASM17990, NAS1360C7C40D | 000000000 | 000000 |
6" | 0.75" | 57,500 | MS17990C1060, NASM17990, NAS1360C7C60D | 000000000 | 000000 |