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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Screws With Six Lobes Recessed Countersunk Head - Symbol FX

NF E 25-107 - 2007

Display drawing:

法国NF E25-107 - 2007 NF25-107 25-107NF Screws With Six Lobes Recessed Countersunk Head - Symbol FX

Screw Thread
d

M3

M4

M5

M6

M8

M10

P		Pitch
b		min
d_k		Theoretical	max
		Actual	max
			min
k		max
Socket No.
t		max
		min

0.5	0.7	0.8	1	1.25	1.5
25	38	38	38	38	38
7.4	10.02	12	14.44	19.38	23
6.57	9.02	10.9	13.2	17.9	21.3
6.17	8.52	10.27	12.46	17.09	20.49
2.2	3.01	3.5	4.22	5.69	6.5
T10	T20	T25	T30	T45	T50
1.18	1.69	1.89	2.22	2.99	3.3
0.92	1.3	1.5	1.83	2.6	2.91

Similar Standards

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7		[ASME] ASME B 18.6.3 (H1B-VI) - 2024	82° Hexalobular Socket Countersunk Flat Head Screws [TABLE 2.2.1-2 VI]
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