M8 x 1.25mm
popularity: very high
Metric Coarse
Spec Sheet
TAP DRILL SIZE
Tap Drill
6
.
7
5
m
m
For 75% thread engagement (typical for tapping)
NEAREST EQUIVALENT - UNIFIED
Standard Series
5
/
1
6
"
-
2
0
T
P
I
Individual Diameter
5
/
1
6
"
Individual Pitch/TPI
2
0
T
P
I
NEAREST EQUIVALENT - BRITISH STANDARD
Standard Series
5
/
1
6
"
-
2
0
T
P
I
Individual Diameter
5
/
1
6
"
Individual Pitch/TPI
2
0
T
P
I
NEAREST EQUIVALENT - BS CYCLE
Standard Series
5
/
1
6
"
-
2
0
T
P
I
Individual Diameter
5
/
1
6
"
Individual Pitch/TPI
2
0
T
P
I
NEAREST EQUIVALENT - BRITISH ASSOC.
Standard Series
0
B
A
-
1
m
m
Individual Diameter
0
B
A
Individual Pitch/TPI
1
m
m
TOLERANCES
Pitch Diameter
max
7
.
1
6
0
m
m
min
7
.
0
4
2
m
m
Major Diameter
max
7
.
9
7
2
m
m
min
7
.
7
6
0
m
m
Minor Diameter
max
6
.
4
3
8
m
m
min
6
.
2
2
6
m
m
Root Radius
max
0
.
1
8
0
m
m
min
0
.
1
5
6
m
m
Lead Angle
max
3
.
2
3
4
°
min
3
.
1
8
1
°
Helix Angle
max
8
6
.
8
1
9
°
min
8
6
.
7
6
6
°
ISO 6g class (most common)
BASIC SPECS
Governing Authority
ISO
Thread System
M
Nominal Diameter
M
8
Pitch
1
.
2
5
m
m
Pitch Type
Coarse
Flank Angle
60°
Calculations based on:
ISO-68-1-1998
ISO-261-1998
ISO-965-1-2013
ASME B1.1
V Thread
popularity:
Spec Sheet
Calculations based on:
ISO-68-1-1998
ISO-261-1998
ISO-965-1-2013
ASME B1.1
V Thread
V-Threads Fastener Gauge | Spectar | Spectar