GEFU® thread-rolling screw With Taptite 2000® thread, flat cylinder head and hexalobular drive
GEFU steel 10.9, zinc-nickel TX cylinder head
SCR-CYL-TT2000-10.9-TX20-(P3E)-M4,0X20
TAPTITE2000
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Self-tapping screws form a nut thread in cast blind holes, rim holes and drilled, lasered and punched sheet metal parts. Unlike thread cutting, self-tapping does not interrupt the material structure in the receiving thread. Instead, the material is displaced and strain-hardened.
Benefits:
Cost savings
- Eliminates thread cutting
Non-cutting thread formation
Low rolling torques with greater thread flank overlap
- TRILOBULAR shape of the core diameter combined with the radius profile of the thread flanks
High clamping force
- Due to low rolling torques
High load-bearing capacity
- Due to large thread flank overlap
- Due to strain-hardened counter thread (nut thread)
Protection against loss (reduced likelihood of screw working loose)
- Play-free and self-locking thread seating
The formed thread corresponds to a standard metric thread
- Where necessary, the GEFU screw can be replaced with a metric screw.
The suitability of the GEFU for the application or component in question must be determined through preliminary testing
GEFU (with strength class 10.9), nominal diameter ≥ M6 => see art. 0209 82... with zinc flake coating
Datasheets(X)
CAD data (available after login)
Examples of materials suitable for this type of non-cutting direct screwing are ductile materials such as steel (up to approx. 420 N/mm²), die-cast zinc, zinc, aluminium, copper, brass etc.
 | |
Thread type x nominal diameter (d1) | M4 |
Length (l1) | 20 mm |
Head diameter (dk) | 7 mm |
Head height (k1) | 3.1 mm |
Internal drive | TX20 |
Guideline values for hole diameters | 3.7 mm |
Material | Steel |
Property class | 10.9 |
Surface | Zinc nickel |
Thread type | Metric thread |
Head type | Socket head |
RoHS-compliant | Yes |
Corrosion protection period | 600 h |
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