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Threaded Inserts – KAR Series – Countersunk Head Inserts
- The pre-bulbed, slightly expanded slotted body design of the KAR Series enables it to be installed using torque (spin-spin) type tools..
- Provides increased pull out in plastics and thin sheet metal.
- Installs into variable thickness materials without tool adjustment.
- Yellow zinc and clear trivalent zinc (1/4-20 & 5/16-18) in stock.
| Inch KAR Series: Pre-Bulb | | | | | | | | | | |
| *Material above is designated for steel. | *Material finishes available: "4" is ZY, "3T" is RoHs ZC, "4T" is RoHs ZY. | | | | | | | | | |
| Thread | Part | L1 | L2 | Grip Range | | HOLE SIZE | d1 | d2 | | k |
| Size | Number | ±0.015 | Ref. | Min. | Max. | ±0.003 | Max. | Min. | Max. | ±0.005 |
| (1/4") | KARS4-420-280 | 1 | 0.52 | 0.02 | 0.28 | 0.393 | 0.344 | 0.61 | 0.645 | 0.058 |
| (1/4") | KARS4-420-500 | 1.235 | 0.52 | 0.28 | 0.5 | 0.393 | 0.344 | 0.61 | 0.645 | 0.058 |
| (5/16") | KARS4-518-280 | 1.141 | 0.775 | 0.02 | 0.28 | 0.503 | 0.438 | 0.74 | 0.77 | 0.062 |
| (5/16") | KARS4-518-500 | 1.375 | 0.775 | 0.28 | 0.5 | 0.503 | 0.438 | 0.74 | 0.77 | 0.062 |
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