Bristol multi-spline blade 0.069 inch, 4 flutes, Series 99 - Weller 9963N

Bristol spline screws sit in instruments, aerospace assemblies and older industrial plant. Blade 9963N matches the 0.069 inch profile with 4 flutes and spreads the torque across all flanks instead of loading one edge.

Practical benefits

• Bristol multi-spline 0.069 inch, 4 flutes, so the blade sits in the screw head without play
• Blade diameter of 1.8 mm, matched to the slim shape of spline fasteners
• Hardened and tempered steel, so the tip keeps its shape even with daily blade changes
• Fits every Series 99 handle, so one handle covers many drive profiles
• Change only the blade instead of the whole screwdriver, which keeps the tool set at the bench small

Applications

Servicing of measuring and test equipment, aerospace assemblies, older industrial plant with spline fasteners.

Compatibility and scope of delivery

The delivery contains one blade. A matching Series 99 handle is not included and is ordered separately. Series 99 handles hold the shank with a patented spring device and release it again without a tool.

Selection notes

The manufacturer lists this blade without ESD capability. At workplaces to IEC 61340-5-1 use dissipative handles and holders alongside it.