Countersunk screw with hexalobular head ISO 14581, blue passivated zinc plated 8.8 steel (A2K)
ISO 14581 steel 08.8 zinc plated
SCR-ISO14581-08.8-TX25-(A2K)-M5X35
Art.-no. 402315 35
EAN 4055375957813
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Increase in assembly productivity
When elements are joined using hexalobular (TX) fasteners, the force is transmitted over a large surface area across the flanks of the drive rather than being centred on one point, as is the case with hexagon socket drives, for example. This has a number of advantages:
- Reduced tool wear
 - Tool does not slip because force is distributed optimally
 - No damage to surface coating
 - No wobbling
 - Screw locates securely
 
Hexalobular drives must comply with DIN EN ISO 10664
- As a result, connection elements with hexalobular heads are standardised and can be used all over the world
 
- Head dimensions in ISO 14581 countersunk screws are gauged in accordance with ISO 7721
 - Some screws with short dimensions are threaded up to the head, see also ISO 14581
 - Countersinks for screw heads in accordance with ISO 14581 must comply with ISO 15065
 
Datasheets(X)
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Thread type x nominal diameter (d1)  | M5  | 
Length (l1)  | 35 mm  | 
Head diameter (dk )  | 9.3 mm  | 
Head height (k1)  | 2.7 mm  | 
Standards  | ISO 14581  | 
Material  | Steel  | 
Property class  | 08.8  | 
Surface  | Zinc plated  | 
RoHS-compliant  | Yes  | 
Head type  | Countersunk head  | 
Drive type  | Internal hexalobular  | 
Internal drive  | TX25  | 
Thread type  | Metric thread  | 
Pitch  | 0.8 mm  | 
Thread form  | Standard metric thread  | 
Product class  | A  | 
