optionen handel.

สกรูเกลียวหยาบ (NC), เกลียวละเอียด (NF)

  • STANDARD ANSI B18.2.1
    MATERIAL MATERIAL SWRCH6R (MILD STEEL)
    COATING BLACK
       
    D (DIAMETER) 1/4 5/16 3/8 7/16 1/2 9/16
    P (PICTH) NC 20 18 16 14 13 12
    P (PICTH) NF 28 24 24 20 20 18
    K (HEAD THICKNESS)  4 5.2 6 7.1 7.9 9.1
    S (WIDTH ACROSS FLAT) 7/16 1/2 9/16 5/8 3/4 13/16
    b 19 22.2 25.4 28.5 31.7 34.9

 

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