Metric Size, Steel
Serrated Quarter-Turn T-Nuts
For Aluminum Extrusions
GN 505
GN 418

RoHS Compliant

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GN 606
Specification
Information

Body: Steel, zinc plated, blue passivated finish

GN 505 T-nuts can be inserted vertically into a T-slot similarly to the use of GN 508.1 rhombus nuts.
When the clamping bolt is tightened, the nut will be forced into a crosswise position by the applied torque and firmly anchored in the T-slot.
This action is achieved by using T-nut type MB, which is intentionally fitted with an overtight fit requiring a higher torque.
A 90° counterclockwise turn is sufficient to remove the bolt and T-nut, and to withdraw the two components from the clamped workpiece.
The clamping face of the T-nut is serrated to ensure that a possible plating coat in the T-slot is penetrated, establishing a good electrical contact.
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Dimensions in:

millimeters
(inches)

Part Number
a
Tol.
-0.1/-0.5 mm
d
Thread
e1
Tol.
-.1/-.5 mm
e2
Tol
+/-.5 mm
h1
h2
Tol.
-.4 mm
Type MB
with increased torque
Type OB
without increased torque
8
(.31)
M4 x .7
8
(.31)
16
(.63)
1.6 - .4
(.07 - .02)
5
(.20)
M5 x .8
M6 x 1.0
10
(.39)
M4 x .7
10
(.39)
19
(.75)
3.5 - 1
(.14 - .04)
5.8
(.22)
M5 x .8
M6 x 1.0
M8 x 1.25