BEX-T5 5-Pc Screw Extractor Set (Cr-Mo)

Q1: What sizes are included in the HansTools BEX-T5 screw extractor set?

A: The BEX-T5 includes five precision-engineered extractors: 7/64″, 9/64″, 5/32″, 1/4″, and 19/64″. These sizes correspond to standard drill bit pilot hole diameters used when extracting broken machine screws, automotive studs, and bolts ranging from M3 up to M16 (approx. 1/8″ to 5/8″).

Q2: Why is Chrome Molybdenum (Cr-Mo) steel critical for screw extractors?

A: Cheap screw extractors made from basic high-carbon steel are brittle; if they snap off flush inside a drilled bolt, they become hardened obstructions that cannot be drilled out with normal drill bits. HansTools uses forged Chrome Molybdenum (Cr-Mo) steel, which delivers superior torsional elasticity. It absorbs high shock loads and twists slightly rather than shattering, ensuring dependable extraction.

Q3: How does the BEX-T5 differ from spiral-fluted “Easy-Out” extractors (like the BEX-S series)?

A: Spiral-fluted extractors (BEX-S series) pull themselves deeper into the hole like a corkscrew, which can cause outward radial expansion on hollowed-out bolt walls, wedging the frozen fastener tighter into the threads. The BEX-T5 uses tapered linear/spline flutes that drive straight down into the pilot hole, creating firm rotational grip without wedging the outer diameter outward.

Q4: What is the step-by-step process for using the BEX-T5?

A:

1. Grind the top of the broken bolt flat and use a center punch (such as HansTools 5115M4) to mark the center.

2. Drill a straight pilot hole using a drill bit matching the specified extractor size (e.g., 7/64″, 9/64″, etc.).

3. Tap the matching BEX-T5 extractor straight into the drilled cavity with a brass hammer to seat the flutes.

4. Fit a tap wrench or box wrench onto the extractor’s drive end and turn slowly counterclockwise to back out the broken fastener.