UNC/UNF Inch key locking inserts provide high strength and are designed to provide high resistance to rotation and pullout loads. After installation into the tapped hole, the locking keys on each keys inserts are driven down through the threads of the parent material, locking the insert firmly and permanently in place.Available in inch and metric thread sizes, the stainless steel solid bushing configuration of the Keys inserts guarantees the quality of the internal thread before installation. No special tools are required for installation and standard taps and drills are used for hole preparation. The pre-assembled self-broaching keys set the insert to depth and ensure positive resistance against rotation.
Material: In Carbon Steel – C1215 or equivalent ; In Stainless Steel – 303 or equivalent
Keys – 302 CRES or equivalent
Finish: Carbon Steel – Zinc Phosphate ; Stainless Steel – Passivated
Tolerances: ±.010 inch or ±.25 mm unless specified otherwise.
| Part number | Dimensions | |||||
| Standard “KNCA” | Self-locking “KNCAL” | Internal thread Ø | External thread Ø | Shear engagement inch² (mm²) | L1 inch (mm) | L4 inch (mm) |
| KNCA0256J | 2-56″ UNJC-3B | 8-32″ UNC-3A | 0,0157 (10,1) | 0,12 (3,05) | 0,088 (2,24) | |
| KNCAL0256J | 0,0157 (10,1) | 0,088 (2,24) | ||||
| KNCA0440J | 4-40″ UNJC-3B | 10-32″ UNF-2A | 0,0302(19,5) | 0,17 (4,32) | 0,125 (3,18) | |
| KNCAL0440J | 0,0302 (19,5) | 0,125(3,18) | ||||
| KNC0632J | 6-32″ UNJC-3B | 12-28″ UNF-2A | 0,0329 (21,2) | 0,17 (4,32) | 0,125 (3,18) | |
| KNCL0632J | 0,0329(21,2) | 0,125(3,18) | ||||
| KNCA0832J | 8-32″ UNJC-3B | 1/4-28″ UNF-2A | 0,0669 (43,2) | 0,22 (5,59) | 0,175(4,45) | |
| KNCAL0832J | 0,0669 (43,2) | 0,175 (4,45) | ||||
| Part number | Installation dimensions | Removal dimensions | |||||
| modified Core-Ø* inch | C’Sink-Ø inch | Installation thread | Hand installation tool part-no. | EXERCITATIO | |||
| Thread | L2 min. inch (mm) | Ø inch (mm) | Depth inch (mm) | ||||
| KNCA0256J | .134+0.003 -0,001 | .166 + .001 – .000 | 8-32 UNC-2B | 0,140 (3,56) | TKNC02 | 0,113 (2,87) | 1/16 (1,59) |
| KNCAL0256J | |||||||
| KNCA0440J | .161+0.003 -0,001 | .194 + .001 -.000 | 10-32 UNF-2B | 0, 160 (4,06) | TKNC04 | 0,136 (3,45) | 3/32 (2,38) |
| KNCAL0440J | |||||||
| KNC0632J | .187 +0,003 -0,001 | .220+ .001 -.000 | 12-28 UNF-2B | 0,160 (4,06) | TKNC06 | 0,159 (4,04) | 3/32 (2,38) |
| KNCL0632J | |||||||
| KNCA0832J | .228 +0,003 -0,001 | .225+ .001 -.000 | 1/4-28 UNF-2B | 0,210 (5,33) | TKNC08 | 0,199 (5,05) | 1 /8 (3,18) |
| KNCAL0832J | |||||||
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