Armstrong 7-840 1″ Drive 8-Point Impact Socket – Heavy Duty Industrial Tool

Armstrong 7-840 1″ Drive 8-Point Impact Socket — a robust, industrial-quality socket built for serious torque applications.

Condition:

The socket is used and shows visible wear—surface oxidation, patina, and signs of shop use are present. The marking “7-840” is visible (see photos). The 1″ square drive fits standard 1″ drive impact tools (please confirm your tool’s drive size). This is an 8-point socket, ideal for heavy equipment service or as a specialized tool.

Specifications / Key Details:

• Brand: Armstrong

• Model: 7-840 (marked)

• Drive Size: 1″ square

• Point Design: 8-Point interior

• Condition: Used – fair condition, surface rust but structurally sound

• Uses: Industrial work, large fasteners, tool collections, mechanics, heavy equipment

Why buy this?:

Armstrong is known for industrial-grade tools, many made in the USA, with high durability. The 8-point design helps reduce rounding of fasteners compared to some standard 6-point or 12-point designs. Because it’s a large drive size (1″) this socket is less common and therefore has value for serious tool users or collectors.

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