Socket bit set Asta 1/2" impact hex long H5–H19 8 pcs (A-1MHEX8)

Asta 1/2" impact hex long socket bit set A-1MHEX8 contains eight long hex bits that cover sizes H5 through H19. These impact-rated hex bits are made for use with 1/2" drive impact wrenches and ratchets and are intended to engage hex fasteners securely in automotive, industrial and maintenance settings. Their extended length helps reach recessed bolts and fasteners in confined spaces while withstanding the higher torque produced by impact tools.

Advantages

The set offers a continuous size range from H5 to H19, reducing the need to switch tools when working on different fasteners. Impact-rated construction provides improved resistance to wear and deformation under high torque. Long bit length increases access to deep or countersunk hex fasteners and improves leverage for efficient fastening and loosening. Suitable for repeated use in workshop and field environments.

Suitable for

• Automotive repair and maintenance
• Industrial assembly and disassembly
• Facility maintenance and mechanical servicing
• Accessing deep or recessed hex bolts and screws

Key specifications

• Drive size: 1/2" compatible
• Bit type: long hex (internal hexagon)
• Sizes included: H5, H6, H7, H8, H9, H10, H12, H14, H17, H19 — note: set covers sizes H5 to H19 with eight long hex bits
• Number of pieces: 8
• Intended use: impact-rated for high-torque applications
• Application areas: automotive, industrial, maintenance

How to use

Select the correct hex bit size for the fastener to ensure proper engagement without rounding. Fit the long hex bit into a 1/2" drive impact socket adapter or directly into a 1/2" drive impact wrench or ratchet. Insert the bit squarely into the fastener head, apply steady engagement, and operate the impact tool according to the tool manufacturer's instructions. For removal, apply reverse rotation and maintain axial pressure to avoid slippage. After use, inspect bits for wear or damage and replace any deformed bits to maintain safe operation.

Usage recommendations

Use these impact-rated long hex bits with compatible 1/2" drive impact tools only; avoid using non-impact drivers or excessive side load. Wear appropriate eye and hand protection when operating impact tools and rotate bits at controlled speeds for best life. Store bits in a dry, organised case to prevent corrosion and maintain quick size selection.