"331" Water Soluble Core, 1 lb. Spool Kester Part No. Core Size (Note 1) Alloy Dia. in. Gauge 24-6040-6401 66 SN60PB40 0.020 25 24-6040-6403 66 SN60PB40 0.031 21 24-6040-6407 66 SN60PB40 0.040 19 24-6040-6411 66 SN60PB40 0.062 16 24-6040-6417 66 SN60PB40 0.025 23 24-6040-6422 66 SN60PB40 0.015 28 24-6337-6401 66 SN63PB37 0.020 25 24-6337-6402 58 SN63PB37 0.031 21 24-6337-6403 66 SN63PB37 0.031 21 24-6337-6407 66 SN63PB37 0.040 19 24-6337-6411 66 SN63PB37 0.062 16 24-6337-6416 58 SN63PB37 0.025 23 24-6337-6417 66 SN63PB37 0.025 23 24-6337-6422 66 SN63PB37 0.015 28 24-6337-6442 66 SN63PB37 0.010 30 24-7068-6402 58 SN96.5AG3CU.5 0.031 21 24-7068-6403 66 SN96.5AG3CU.5 0.031 21 24-7068-6409 66 SN96.5AG3CU.5 0.050 18 24-7068-6411 66 SN96.5AG3CU.5 0.062 16 24-7068-6417 66 SN96.5AG3CU.5 0.025 23 24-7068-6422 66 SN96.5AG3CU.5 0.015 28 24-7068-6442 66 SN96.5AG3CU.5 0.010 30 24-9574-6403 66 K100LD 0.031 21 24-9574-6422 66 K100LD 0.015 28

Note 1. Flux Core 50 = 1.1% by weight, Flux Core 58 = 2.2% by weight, Flux Core 66 = 3.3% by weight.

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