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描述
GB/T 68-2000 - 开槽沉头螺钉
明细表
螺钉 GB/T 68 M4x35
IDNR
Ident number
D
Nominal thread diameter
mm
D3
Nominal core diameter
mm
P
Pitch of bolt
mm
L
公称长度
mm
A
Distance from the last full form thread to the bearing face
mm
B
Thread length
mm
DK
Diameter of the head
mm
K
Head height
mm
N
Width of slot
mm
R
Transition radius under head
mm
T
Depth of the driving feature
mm
X
Length of the thread run-out
mm