Bench tools — how a hacksaw blade is specified In fitting practice, a hand hacksaw blade is primarily specified by which characteristic?

Introduction / Context:
Hacksaw blades are interchangeable and must fit the frame. Clear specification ensures correct procurement and selection for the job.

Given Data / Assumptions:

• Standard hand hacksaw blades with pinned ends.
• Common lengths measured between pin holes (e.g., 250 mm or 300 mm).
• Other properties like teeth per inch are also chosen, but the primary designation is by length.

Concept / Approach:
The most fundamental descriptor of a hacksaw blade is its length (distance between fixing holes), ensuring it mounts correctly in the frame. Secondary specifications include teeth per inch (TPI), material (e.g., HSS all-hard or flexible back), and set. While TPI is important for performance, the first identifier is length.

Step-by-Step Solution:
Identify how blades are catalogued: by length first.Confirm other selections (TPI, material) are supplementary.Choose “length”.

Verification / Alternative check:
Vendor catalogues list blades grouped primarily by 250 mm and 300 mm sizes, then by TPI and composition.

Why Other Options Are Wrong:

• Material / width / number of teeth: important but not the primary specification used to match the blade to the frame.

Common Pitfalls:
Ordering the correct TPI but wrong length prevents mounting in the frame; always confirm the length first.

Final Answer:
length