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GEFU® thread-rolling screw With Taptite 2000® thread, flattened half round head with collar and hexalobular drive

GEFU DIN 7500-1 steel, z-p., TX flat hr/hd collar
SCR-HRDHD-FLG-DIN7500-TX20-(A2K)-M4,0X8

Art.-no. 020977408
EAN 4050642299207

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GEFU® thread-rolling screw With Taptite 2000® thread, flattened half round head with collar and hexalobular drive

Art.-no. 020977408

Prices for customers after login
Quantity
PU

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DIN 7500-1 case-hardened (-O-) zinc-plated steel, blue passivated (A2K) with anti-friction coating

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.
Notice

The suitability of the GEFU for the application or component in question must be determined through preliminary testing. Guideline values for suitable hole diameters are specified in DIN 7500-2.

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Application area

Examples of materials suitable for this type of non-cutting direct screwing are ductile materials such as steel (up to approx. 500 N/mm²), die-cast zinc, aluminium, copper, copper alloys etc.

Thread type x nominal diameter (d1)

M4

Length (l1)

8 mm

Head diameter (dk)

9.4 mm

Head height (k1)

2.2 mm

Internal drive

TX20

Guideline values for hole diameters

3.7 mm

Head type

Button head with collar

Standards

DIN 7500-1

Material

Steel, case-hardened

Surface

Zinc plated

RoHS-compliant

Yes

Art.-no.
Cust. Mat. No.

Hazardous Material

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Datasheets()

Datasheets ()

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Technical information