Ratchet wrench set saTra 503.5905, chromium-vanadium steel, 72 ratchet heads, certified DIN 3113/ISO 3318

saTra 503.5905 is a ratchet wrench set manufactured from chromium-vanadium steel, designed for mechanical and maintenance work that requires multiple socket sizes and durable hand tools. The set includes 72 ratchet heads and complies with DIN 3113 and ISO 3318 standards, offering a combination of standardized geometry and resistance to wear and corrosion. The tools are suited for repeated use in workshop and service environments and are supplied in packs of five.

Advantages

The chromium-vanadium steel construction provides a balance of strength and toughness while enhancing resistance to deformation under torque. Conformance with DIN 3113 and ISO 3318 ensures compatibility with metric fasteners that follow these standards and supports consistent fit and function. The high number of ratchet heads included enables broad coverage of common sizes, reducing the need to switch toolsets and increasing efficiency. The set is compact enough for organized storage yet comprehensive for many mechanical applications.

Suitable for

• Vehicle maintenance and light automotive repairs
• Industrial equipment servicing and assembly
• General mechanical workshops and technician toolkits
• Maintenance tasks in facilities and plant operations

Key specifications

• Material: chromium-vanadium steel for enhanced strength and wear resistance
• Quantity of ratchet heads: 72 pieces to cover a wide range of sizes
• Standards: manufactured to meet DIN 3113 and ISO 3318 specifications
• Pack configuration: supplied in packs of five pieces; single pack weight approx. 661 g

How to use

Select the appropriate ratchet head for the fastener size and attach it securely to the wrench. Use the ratchet function to apply torque in the desired direction, engaging the reversal mechanism as required for tightening or loosening. Maintain a steady hand and apply force smoothly to avoid slippage; when higher torque is needed, ensure the head and wrench are properly seated to prevent rounding fasteners. After use, clean contact surfaces and store the heads in a designated case or organizer to prevent corrosion and loss.

Recommendations

For prolonged tool life, avoid using the ratchet set as a hammer or pry bar, and regularly inspect ratchet teeth and heads for wear. Keep tools clean and lightly lubricated on moving parts to maintain smooth ratchet action. Use the correct size head for each fastener to reduce the risk of damage to both the tool and the fastener.