| Allied Electronics | 70151234 | 1 | | 1 | |
 Onlinecomponents.com | KTK-1/2 | 1 | 14 | 1 | 1 @ $24.44, 5 @ $22.40, 10 @ $20.68, 25 @ $19.76, 50 @ $18.93, 100 @ $17.68, 250 @ $17.23 |
| Grainger | 6F129 | 1 | | 1 | |
 Zoro | G0733047 | 1 | 385 | 1 | 1 @ $20.25 |
| 1Source | KTK-1/2 | 1 | | 1 | |
| Galco | KTK-1/2 | 1 | | 1 | |
 Walker Industrial | KTK-1-2 | 1 | 3 to 5 Days | 1 | 1 @ $37.35 |
 Platt.com | 0552973 | 1 | | 1 | 1 @ $43.52 |
 Carlton Bates Company | 05171242006 | 1 | | 1 | 1 @ $23.51 |
| Fuses Unlimited | KTK-1/2 | 1 | 1919 | 1 | |
 AI Consolidated | KTK-1-2-BUSSMANN | 1 | -2 | 1 | 1 @ $19.90 |
 Digi-Key | 283-2460-ND | 1 | 27 | 1 | 1 @ $31.42, 5 @ $29.92, 10 @ $27.68, 50 @ $23.94, 100 @ $22.44, 250 @ $21.54 |
 NRI Industrial | D489159 | 1 | | 1 | 1 @ $38.67 |
 Raptor Supplies | AE8QJX | 1 | | 1 | 1 @ $34.51 |
 AmazonTP | B011NLPCKM | 1 | | 1 | 1 @ $70.91 |
 AmazonTP | B018MT096A | 1 | | 1 | 1 @ $69.29 |
 Newark | 18J5855 | 1 | 78 | 1 | 1 @ $62.77, 5 @ $59.63, 10 @ $47.80, 25 @ $35.68, 50 @ $28.46, 100 @ $24.01 |
 Amazon | B002E8HVQ2 | 1 | | 1 | |
| AmazonSC | B07MP27L8T | 1 | | 1 | 1 @ $48.96 |
| RS Online | 4588481 | 1 | | 1 | |
| Galco | KTK-0.500 | 1 | | 1 | |
| Newark | 63R7751 | 1 | | 1 | |
| Digi-Key | 265004 | 1 | | 1 | 1 @ $60.36, 5 @ $57.34, 10 @ $54.32, 50 @ $45.27, 100 @ $43.03 |
 Mouser | 504-KTK1/2 | 1 | 30 | 1 | 1 @ $33.31, 10 @ $29.34, 100 @ $23.79, 1000 @ $22.20, 10000 @ $22.20 |
 Verical | KTK-1/2 | 2 | 11 | 1 | 2 @ $34.99, 100 @ $34.99, 1000 @ $34.99, 10000 @ $34.99 |
| Guardian | KTK-1/2 | 1 | | 1 | |
| standardelectricsupply.com | 8052 | 1 | | 1 | 1 @ $426.90 |
 steinerelectric.com | 5009 | 1 | | 1 | 1 @ $28.95 |
| Widespread | KTK-1/2 | 1 | | 1 | |
| Crescent Electric Supply Co | 2147959 | 1 | | 1 | |
| galesburgelectric.com | KTK-1/2 | 1 | | 1 | |
| RS Delivers | 458-8481 | 1 | 170 | 1 | 1 @ $15.54 |
| Crescent Electric Supply Co | KTK-1/2 | 1 | | 1 | |
| us.rs-online.com | 70151234 | 1 | | 1 | 1 @ $53.89, 5 @ $51.18, 10 @ $48.50, 50 @ $40.41, 100 @ $37.72, 200 @ $35.02 |
 National Supply Network | 74973959 | 5 | -2 | 5 | 1 @ $32.93 |
 Allfuses | KTK-1/2 | 1 | 80 | 1 | 1 @ $8.79 |
 crescentelectric.com | 132173 | 1 | 13 | 1 | 1 @ $54.89 |