BORDO Screw Extractor Set

(0 reviews)

BORDO Square Screw Extractor Set

Square Screw Extractor 5 Piece Set Nos 1-5
Chrome Molybdenum square screw extractor.
Square screw extractors feature four sided sharp undercut edges to provide a solid grip and will not expand damaged fastener during extraction.
They are ideally suited for removing broken bolts, studs & socket screws from medium to hard metals.
Typically the required screw extractor will be approx. 2/3 the diameter of the fixing you are extracting.
Use a centre punch to mark the centre of the fixing before drilling to prevent the drill bit wandering.
Select a drill bit that is suitable for drilling into the specific material – typically HSS or HSS-Co5. Ideally the drill should be Â“Left Hand” which will prevent further tightening of the fixing during drilling.
When using left hand drills ENSURE THE DRILL IS SET TO REVERSE.
Drill pilot hole in centre of broken bolt, screw or stud.
Lightly tap screw extractor into hole and turn anti-clockwise with a tap wrench or spanner.
Damaged bolt, screw or stud will unwind out of the hole.
Avoid excessive lateral loads – breakage could result.
Wear eye and hearing protection.

(0 reviews)

(0 reviews)

HSS-Co5 (Cobalt) Left Hand Twist Drill Set
Bordo Fractional Left Hand Cobalt Tough HSS-Co5 Twist Drills.
135° Split Point (crankshaft point)
Split point is self centering and the short distance from the drill axis to the outer corners results in faster penetration, reducing the need for end thrust.
The 135° point should be used to cut harder steel materials especially in deep hole applications.
In these situations it will produce thicker chips minimising work hardening of the cavity.
Faster penetration reduces abrasion and friction along the cutting edges.
Cobalt HSS Twist drills are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel.
Left Hand Twist drills are ideal for use with screw extractors to remove broken bolts and screws.
Bronze Finish (gold oxide) surface treatment. The metallic brown coloured low temperature temper treatment is normally only used on cobalt tools for identification purposes.

(0 reviews)