The Klein 610-5/16 is a lightweight single nut driver at $7.99 and 0.1 pounds, earning a 4.7-star rating from 336 reviews and offering professional Klein quality at an entry-level price.
Electricians, technicians, and tradespeople who need a specific 5/16-inch driver in the Klein lineup at the lowest possible cost.
Skip if
Buyers who need multiple sizes or want a hollow-shaft design for accessing longer fasteners.
Weight 0.1 Pounds
Priced 50% below the category median ($15.99 across 47 tracked models)
Our scorecard
4.6/5overall
Owner rating4.7/5
4.7 average across 336 owner ratings
Popularity0.3/5
336 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other hand tools and workshop hand tools we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
At $7.99 and 0.1 pounds, the Klein 610-5/16 is the most affordable and lightest entry in the Klein nut driver lineup covered here. The 4.7-star rating from 336 reviews confirms it holds up to Klein's quality standard at a fraction of the cost of heavier models.
The listed weight of 0.1 pounds signals a compact, solid-shaft design well-suited for tight spaces and frequent transitions between fasteners. For 5/16-inch applications, it provides direct torque transfer in a tool light enough to carry without adding pocket weight.
At under $8, this is an easy buy for any tradesperson who frequently works with 5/16-inch fasteners and wants a Klein-branded driver without a major upfront cost. The 336-review volume across four-plus stars reflects years of consistent use by professionals.
Pros
Very affordable at $7.99 for a Klein-brand nut driver
Ultra-lightweight at 0.1 pounds, easy to carry throughout a workday
4.7-star rating from 336 reviews reflects sustained professional satisfaction
Klein name adds reliability in trade and electrical applications
Cons
Single size only, not useful as a standalone set
No shaft length, drive size confirmation, or material finish published
Zero buyers recorded last month, suggesting slower recent sales relative to other Klein models
Specifications
Weight
0.1 Pounds
Performance notes
At 0.1 pounds, the Klein 610-5/16 is designed for one-handed use in precise fastening tasks. The low weight indicates a compact shaft and handle suited for repetitive use without fatigue. No shaft length or finish specs are listed, but the 4.7-star average from 336 verified reviews suggests consistent torque performance for its intended size.
What buyers say
Owners tend to appreciate the quality relative to the sub-$8 price and cite it as a dependable addition to a Klein set. Some note they purchased it as a single-size add-on to fill a gap in their existing collection.
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