Impact socket 5/8 inch ELORA 790A-5/8S short 1/2 inch square drive

The impact socket 5/8 inch ELORA 790A-5/8S is engineered for pneumatic and electric impact wrenches. It carries a 1/2 inch square drive conforming to DIN 3121-G 12.5 and ISO 1174. The 6-point hex profile grips fastener flats firmly, reducing slip and rounding. Black phosphate surface treatment protects against rust and wear in workshop environments. A through-hole accepts a retaining pin, and a groove holds a rubber retention ring to secure the socket on the drive anvil.

Special alloy steel construction absorbs shock loads from impact tools. The short body measures 37.8 mm in length and 24 mm across the outer diameter. This compact design suits applications where clearance is limited. Weight is 78 g. Operating standards include DIN 3129 and ISO 2725-2, ensuring compatibility with professional fastening equipment.

Impact Socket 5/8 Inch Design and Construction

Material and Finish

The socket is forged from special alloy steel selected for impact duty. Black phosphate coating provides a durable, non-reflective surface that resists oxidation. This finish also reduces glare under workshop lighting. The coating adheres tightly to the base metal, maintaining protection even after repeated use.

• Material: special alloy steel for impact applications
• Surface: black phosphate coating
• Corrosion resistance: suitable for industrial environments
• Finish durability: maintains integrity under repeated shock loads

Phosphate treatment penetrates surface irregularities, creating a uniform layer. This process enhances adhesion and extends service life. The black finish distinguishes impact sockets from chrome-plated hand sockets, preventing accidental misuse on manual ratchets.

Drive and Retention Features

The 1/2 inch square drive meets DIN 3121-G 12.5 geometry. A through-hole in the drive end accepts a standard retaining pin. A circumferential groove accommodates a rubber O-ring or C-clip. These features lock the socket onto the tool anvil, preventing ejection during high-speed rotation.

• Drive size: 1/2 inch square
• Drive standard: DIN 3121-G 12.5, ISO 1174
• Pin hole: accepts safety retaining pin
• Retention groove: holds rubber ring or clip

Retention systems are critical when operating impact tools at several thousand RPM. The pin and ring combination ensures the socket remains attached even if the fastener suddenly releases. This design reduces the risk of the socket becoming a projectile.

Hex Opening and Profile

The 5/8 inch hex opening is equivalent to approximately 16 mm. Six-point internal geometry contacts fastener flats across their full width. This distributes torque evenly and minimizes corner rounding. Wall thickness is optimized to balance strength and socket diameter.

• Hex size: 5/8 inch (approx. 16 mm)
• Profile: 6-point (hexagon)
• Contact area: full flat engagement
• Wall design: optimized for impact loads

Six-point sockets are preferred for high-torque applications because they apply force to fastener flats rather than corners. This reduces the likelihood of stripping or deforming bolt heads and nuts. The short body length of 37.8 mm allows access in confined spaces.

Technical Specifications

Dimensions and Weight

Compact dimensions suit tight clearances around automotive suspension, engine mounts, and machinery frames. The 24 mm outer diameter fits standard deep-well clearances. Weight of 78 g is light enough for extended overhead work yet substantial enough to absorb impact energy.

• Overall length: 37.8 mm
• Outer diameter: 24 mm
• Hex size: 5/8 inch
• Drive size: 1/2 inch square
• Weight: 78 g

Short sockets are selected when bolt protrusion is minimal or when a deep socket would interfere with adjacent components. The 790A-5/8S model is part of a broader series; a long-body variant (790A-5/8L) is available for recessed fasteners.

Standards and Compliance

The socket conforms to multiple international standards governing drive geometry and operational safety. DIN 3121-G 12.5 specifies the 1/2 inch square drive dimensions and tolerances. ISO 1174 provides equivalent international recognition. DIN 3129 and ISO 2725-2 define performance requirements for impact sockets, including material hardness, torque capacity, and fatigue resistance.

• Drive geometry: DIN 3121-G 12.5, ISO 1174
• Operational standards: DIN 3129, ISO 2725-2
• Application: power tools, impact wrenches

Compliance with these standards ensures interchangeability with tools and accessories from multiple manufacturers. It also provides a baseline for expected service life and failure modes under rated loads.

Common Applications

This impact socket is suited to automotive repair, heavy equipment maintenance, and industrial assembly lines. Typical tasks include wheel lug nut removal, suspension component fastening, and engine assembly. The 5/8 inch size is common in North American automotive and machinery applications. Pneumatic impact wrenches operating at 90 PSI and electric models up to 300 ft-lb torque are compatible. The retention features are particularly important in production environments where tool changes occur frequently and speed is critical.

Usage and Safety Notes

Always use a retaining pin and rubber ring when operating at high speeds. Inspect the pin hole and groove for wear before each shift. Do not use impact sockets on manual ratchets or breaker bars; the hardened steel may crack under slow, steady loads. For fasteners recessed deep within assemblies, consider the long-body variant ELORA 790A-5/8L. Store sockets in a clean, dry environment to preserve the phosphate finish.