GB/T901 等长双头螺柱 B级
工艺:
详细信(xin)息
GB/T901 等(deng)长(zhang)双头螺柱 B级(ji) 材质、等(deng)级(ji):8.8级(ji)、10.9级(ji)、12.9级(ji) 、A2-70、A4-70 、A4-80等(deng)
表面(mian)处理:镀普(pu)通(tong)蓝(lan)白锌(xin)、普(pu)通(tong)彩锌(xin)、热镀锌(xin)、环(huan)(huan)(huan)保彩锌(xin)、环(huan)(huan)(huan)保蓝(lan)白锌(xin)、环(huan)(huan)(huan)保达克罗(luo)等
盐雾(wu)时(shi)间(jian):可做(zuo)72H、96H、120H、300H、360H、720H等高盐雾(wu)处理
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Nominal Diameter | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | (M18) | M20 | (M22) | M24 | (M27) | M30 | (M33) | M36 | (M39) | M42 | M48 | M56 | |
P ① | Pitch | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 5 | 5.5 |
b | 10 | 11 | 12 | 14 | 16 | 18 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | 66 | 72 | 78 | 84 | 89 | 96 | 108 | 124 | |
①,P = pitch of coarse thread. | ||||||||||||||||||||||||
②,ds ≈ pitch diameter of thread | ||||||||||||||||||||||||
③,Xmax = 1.5P |