b&m-FORM®
Universally usable direct screwing system for all ductile metal materials
Metric fasteners require a pre-tapped thread in the counterpart. The time-consuming, expensive preparation (countersinking, cutting, cleaning the thread) can be avoided in ductile metal materials through the use of b&m FORM®. This direct screwing solution creates a metric thread in components made of materials such as aluminum, steel, magnesium, or even zinc. b&m-FORM® serves as a tool and fastener all in one.
Functional principle
Unlike conventional direct screwing solutions that are “trilobular” in design, the b&m-FORM® features a circular thread cross section. This structure, combined with fully formed thread flanks, allows for maximum flank coverage and therefore high stripping torque. The thread geometry of b&m-FORM® ensures a reliable and easy screw insertion processes, even under challenging conditions.
Benefits
- Cost efficient: Preparation steps are not required – b&m-FORM® can be screwed directly into the defined core hole
- Effortless hole alignment with a self-correcting rounded screw tip
- Effortless assembly with minimal axial force required during the screw-in process
- A metric thread is generated so that metric equivalents can also be used for repairs
- Repeated screw connections are possible
- Due to the self-locking effect no threadlocker is needed
Features
Diameter: M3 – M10
Length: depends on the diameter / 6 mm – 70 mm
Property class: F10 according to b&m factory standard WN 04/14 or according to DIN specification
Flank angle: 60°
Thread pitch: metric according to DIN 13
Head geometry: customer-specific solutions can be produced
Coating: black or silver zinc nickel; other coatings available upon customer request
Forming zone: 3 – 4 threads
Available dimensions
b&m-FORM®
THREAD FORMING SCREW – PAN HEAD – HEXALOBULAR INTERNAL DRIVING –
MATERIAL: STEEL ACC. TO DIN EN ISO 898-1 – SUITABLE FOR PROPERTY CLASS: 10.9 –
SURFACE: FE//ZNNI8//FN//T2YL ACC. TO DIN EN ISO 19598 – BLACK – CR-VI-FREE
Other dimensions, coatings and head shapes are available on request.
