Nominal Size | Threads per Inch | Series b | Head Blank size (Ref) | A | B | C | E | G | L | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Wing | Wing | Wing | Boss | Boss | Practical Screw Lengths | ||||||||||
Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | ||||
ANSI B18.17 - 4 (0.1120) | 40 | Hvy. | AA | 0.72 | 0.59 | 0.41 | 0.28 | 0.11 | 0.07 | 0.33 | 0.29 | 0.14 | 0.1 | 0.75 | 0.25 |
ANSI B18.17 - 6 (0.1380) | 32 | Lgt. | AA | 0.72 | 0.59 | 0.41 | 0.28 | 0.11 | 0.07 | 0.33 | 0.29 | 0.14 | 0.1 | 0.75 | 0.25 |
ANSI B18.17 - 6 (0.1380) | 32 | Hvy. | A | 0.91 | 0.78 | 0.47 | 0.34 | 0.14 | 0.1 | 0.43 | 0.39 | 0.18 | 0.14 | 0.75 | 0.25 |
ANSI B18.17 - 8 (0.1640) | 32 | Lgt. | A | 0.91 | 0.78 | 0.47 | 0.34 | 0.14 | 0.1 | 0.43 | 0.39 | 0.18 | 0.14 | 0.75 | 0.38 |
ANSI B18.17 - 8 (0.1640) | 32 | Hvy. | B | 1.1 | 0.97 | 0.57 | 0.43 | 0.18 | 0.14 | 0.5 | 0.45 | 0.22 | 0.17 | 0.75 | 0.38 |
ANSI B18.17 - 10 (0.1900) | 24, 32 | Lgt. | A | 0.91 | 0.78 | 0.47 | 0.34 | 0.14 | 0.1 | 0.43 | 0.39 | 0.18 | 0.14 | 1 | 0.38 |
ANSI B18.17 - 10 (0.1900) | 24, 32 | Hvy. | B | 1.1 | 0.97 | 0.57 | 0.43 | 0.18 | 0.14 | 0.5 | 0.45 | 0.22 | 0.17 | 1 | 0.38 |
ANSI B18.17 - 12 (0.2160) | 24 | Lgt. | B | 1.1 | 0.97 | 0.57 | 0.43 | 0.18 | 0.14 | 0.5 | 0.45 | 0.22 | 0.17 | 1 | 0.38 |
ANSI B18.17 - 12 (0.2160) | 24 | Hvy. | C | 1.25 | 1.12 | 0.66 | 0.53 | 0.21 | 0.17 | 0.58 | 0.51 | 0.25 | 0.2 | 1 | 0.38 |
ANSI B18.17 - 1⁄4 (0.2500) | 20 | Lgt. | B | 1.1 | 0.97 | 0.57 | 0.43 | 0.18 | 0.14 | 0.5 | 0.45 | 0.22 | 0.17 | 1.5 | 0.5 |
ANSI B18.17 - 1⁄4 (0.2500) | 20 | Reg. | C | 1.25 | 1.12 | 0.66 | 0.53 | 0.21 | 0.17 | 0.58 | 0.51 | 0.25 | 0.2 | 1.5 | 0.5 |
ANSI B18.17 - 1⁄4 (0.2500) | 20 | Hvy. | D | 1.44 | 1.31 | 0.79 | 0.65 | 0.24 | 0.2 | 0.7 | 0.64 | 0.3 | 0.26 | 1.5 | 0.5 |
ANSI B18.17 - 5 ⁄ 16 (0.3125) | 18 | Lgt. | C | 1.25 | 1.12 | 0.66 | 0.53 | 0.21 | 0.17 | 0.58 | 0.51 | 0.25 | 0.2 | 1.5 | 0.5 |
ANSI B18.17 - 5 ⁄ 16 (0.3125) | 18 | Reg. | D | 1.44 | 1.31 | 0.79 | 0.65 | 0.24 | 0.2 | 0.7 | 0.64 | 0.3 | 0.26 | 1.5 | 0.5 |
ANSI B18.17 - 5 ⁄ 16 (0.3125) | 18 | Hvy. | E | 1.94 | 1.81 | 1 | 0.87 | 0.33 | 0.26 | 0.93 | 0.86 | 0.39 | 0.35 | 1.5 | 0.5 |
ANSI B18.17 - 3⁄8 (0.3750) | 16 | Lgt. | D | 1.44 | 1.31 | 0.79 | 0.65 | 0.24 | 0.2 | 0.7 | 0.64 | 0.3 | 0.26 | 2 | 0.75 |
ANSI B18.17 - 3⁄8 (0.3750) | 16 | Reg. | E | 1.94 | 1.81 | 1 | 0.87 | 0.33 | 0.26 | 0.93 | 0.86 | 0.39 | 0.35 | 2 | 0.75 |
ANSI B18.17 - 3⁄8 (0.3750) | 16 | Hvy. | F | 2.76 | 2.62 | 1.44 | 1.31 | 0.4 | 0.34 | 1.19 | 1.13 | 0.55 | 0.51 | 2 | 0.75 |
ANSI B18.17 - 7 ⁄ 16 (0.4375) | 14 | Lgt. | E | 1.94 | 1.81 | 1 | 0.87 | 0.33 | 0.26 | 0.93 | 0.86 | 0.39 | 0.35 | 4 | 1 |
ANSI B18.17 - 7 ⁄ 16 (0.4375) | 14 | Hvy. | F | 2.76 | 2.62 | 1.44 | 1.31 | 0.4 | 0.34 | 1.19 | 1.13 | 0.55 | 0.51 | 4 | 1 |
ANSI B18.17 - 1⁄ (0.5000) | 13 | Lgt. | E | 1.94 | 1.81 | 1 | 0.87 | 0.33 | 0.26 | 0.93 | 0.86 | 0.39 | 0.35 | 4 | 1 |
ANSI B18.17 - 5⁄8 (0.6250) | 11 | Hvy. | F | 2.76 | 2.62 | 1.44 | 1.31 | 0.4 | 0.34 | 1.19 | 1.13 | 0.55 | 0.51 | 4 | 1 |
ANSI B18.17 - 5⁄8 (0.6250) | 11 | Hvy. | F | 2.76 | 2.62 | 1.44 | 1.31 | 0.4 | 0.34 | 1.19 | 1.13 | 0.55 | 0.51 | 4 | 1.25 |