Technical Specifications

Flush Head Studs: Type NFH

Thread & Pitch	D +/- 0.4	H Max.	Min. Rec. Sheet Thickness	Hole Size +0.08 -0.0	Min. Dis. to Edge of Sheet
M3x0.5	4.6	2.1	1.0	3.0	5.6
M3.5x0.6	5.3	2.2	1.0	3.5	6.4
M4x0.7	5.9	2.4	1.0	4.0	7.2
M5x0.8	6.5	2.7	1.0	5.0	7.2
M6x1.0	8.2	3.0	1.6	6.0	7.9
M8x1.25	9.6	3.7	2.4	8.0	9.0

Thread Size	Sheet Thickness 'mm'	Torque Out 'Nm'	Push Out 'N'
M3	1.5	2.3	1287
M4	1.5	5.2	1847
M5	1.5	7.2	2293
M6	2.5	14.8	2689
M8	2.5	23.1	3841

Standard lengths
M3	6	8	10	12	15	18	20	-	-	-	-	-	-
M3.5	6	8	10	12	15	18	20	22	-	-	-	-	-
M4	6	8	10	12	15	18	20	22	25	-	-	-	-
M5	-	8	10	12	15	18	20	22	25	28	-	-	-
M6	-	-	10	12	15	18	20	22	25	28	30	35	-
M8	-	-	10	12	15	18	20	22	25	28	30	35	38

Materials		Standard finishes
Carbon Steel		Bright Zinc/Clear passivated to BS 3382 (ZI)
303 Stainless Steel (A2)		(Zinc / Yellow Passivated (ZC) Available to Special Order)
Aluminium (AL) (Special Order)

Notes

Steel parts are suitable for use in sheets witd a maximum hardness of 80 HRB.

Stainless Steel Parts are suitable for use in sheets witd a maximum hardness of 70 HRB.

(Stainless Steel parts will not usually install successfully in Stainless Sheet). If you need to install into stainless sheet please contact our sales department for alternatives. Aluminium parts are suitable for installation in sheets witd a maximum hardness of 50 HRB.