1/4 inch screwdriver bit hexagon socket 4 mm, 50 mm long, zinc phosphated, pack of 5 - Bahco 59S/50H4

A hexagon socket screw at the bottom of a bore or behind a cover is hard to reach with a 25 mm bit, and every add-on extension introduces play into the joint. This bit measures 50 mm and works straight out of the bit holder. Size 4 mm matches socket head cap screws of size M5 to DIN EN ISO 4762.

Benefits in use

• Tool length of 50 mm instead of the usual 25 mm, deep seated screws are reached without an adapter in between.
• 1/4 inch drive to DIN 3126-E 6.3 and ISO 1173, so the bit fits common bit holders, ratchet screwdrivers and cordless drivers.
• Size 4 mm for hexagon socket screws, typical for socket head cap screws M5 to DIN EN ISO 4762.
• High performance steel alloy as the tool material, laid out for repeated fastening work in trade and industry.
• Zinc phosphated surface as corrosion protection during storage and workshop use.
• Five bits per pack in a plastic box, which keeps the stock at the assembly bench predictable.

Applications

Assembly and maintenance in machine, device and control cabinet construction, fixture building, workshop and service vehicle. The 50 mm length pays off wherever the screw sits in a counterbore, a profile channel or behind a panel. Typical for assemblies in machine and fixture construction.

Standards and conformity

Drive to DIN 3126-E 6.3 and ISO 1173. The bit is not insulated, the manufacturer property table lists VDE as no, so it is not intended for live working to IEC 60900. No dissipative rating to IEC 61340-5-1 is stated for this article.