304 Stainless Steel Bi-Metal Self-Drilling Fasteners JT3 & JF3
EJOT Super-SAPHIR JT3
Stainless-steel self-drilling fasteners
EJOT Super-SAPHIR® fasteners are manufactured from 304 (A2) grade austenitic stainless steel with a hardened carbon steel drill point welded to the stainless steel shank. The hardened drill point enables the screw to drill carbon steel sections and by having the lead threads formed on the hardened point, this allows for correct tapping at high drilling speed. Where specified they are assembled with a stainless steel / EPDM vulcanized sealing washer, ensuring a safe seal every time. These fasteners are zinc coated for aesthetic reasons and waxed to lubricate the surface during installation.
The EJOT SUPER-SAPHIR innovation can reduce drilling time up to 50% and noticeably saves labor costs when fastening roof and cladding panels. In practice this means a reduction in assembly times.
The EJOT Super-SAPHIR range is used by roofing and cladding manufacturers and installers worldwide, as well as by leading solar mounting system manufacturers.
Features and characteristics
Drilling, thread-forming and fastening in one step
Connect components in one step
Decrease assembly times
Save tool changes and costs for drilling tools
Available with stainless steel / EPDM vulcanized sealing washer
Hexagon or hexalobular drive / TORX® drive
Free Spin Zone under the head facilitates longitudinal joints
Small dead centre prevents misalignment on the component surface
Excellent atmospheric and UV resistance.
A2 stainless steel with case-hardened carbon steel drill point
Screw material: A2 stainless steel with case-hardened carbon steel drill point
For components made of: Steel or aluminum
Building authorities approved: Ü
Max. drill capacity [inches (mm)]: 0.472" (12mm)
Approval: Z-14.4-426 and Z-14.1-537
Drilling capacity ti + tii : 1.0 + 1.0 mm
External hexagon drive: A/F8
Approved for sheet metal thicknesses of:
EJOT EJOFAST JF3
Fastens sheet metal fast: used extensively for side-lap stitching on exposed fastener metal panel roofs.
For fixing metal profiles, profiled metal sheets, insulated metal panels, solar mounting systems, wind deflectors; directly to steel roof profiles.
Excellent clamping characteristics
Self-drilling screw without the common drill tip
Twin thread for faster installation
Asymmetric thread for high-pull-out values
New screw point geometry prevents the fastener from slipping
Point geometry ensures almost no metal chips
Material SS 304 (A2) with case-hardened drill point
Preassembled 304 SS washer with vulcanized elastomer for excellent atmospheric/UV resistance and optimal load transmission and secure sealing.
The EJOFAST® thin sheet metal screw is part of the latest screw generation at EJOT. It is a self-drilling screw without the usual cutting bit.
And yes, it works!
EJOFAST's innovative point geometry fastens thin sheet metal fast!
By displacing the material in the axial direction, the screw joint does not produce long metal chips, avoiding extra cleaning work or customer complaints.
The innovative double-thread can reduce installation time considerably and noticeably save labor costs.
The EJOFAST range of bi-metal self-drilling screws are manufactured from SS grade 304 and feature an
extremely hard carbon steel drill point in combination with high-performance leading threads.
Specifically engineered to fix components to thin metal profile,
EJOFAST features excellent clamping properties.
To view the UES Evaluation Report,
Fixing to thin sheet metal (steel): 26 gage - 20 gage
Max. clamping-range: 3/8’’
A/F5/16‘‘ hexagon drive