螺纹尺寸

孔径(in.)

长度(in.)

头部直径(in.)

头部厚度(in.)

 口部直径(in.)

材质

6-32 UNC

0.2656+0.006

0.420±0.015~ 0.470±0.015

0.39±0.010

0.030

0.265

铝

8-32 UNC

10-24 UNC

0.2969+0.006

0.475±0.015~ 0.585±0.015

0.415±0.010

0.296

10-32 UNF

1/4-20 UNC

0.3906+0.006

0.580±0.015~ 0.680±0.015

0.500±0.010

0.035

0.390

1/4-28 UNF

5/16-18 UNC

0.5312+0.006

0.690±0.015~ 0.805±0.015

0.685±0.010

0.530

5/16-24 UNF

3/8-16 UNC

0.690±0.015~ 0.805±0.015

3/8-24 UNF