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Klein 32933 vs 32940: Threaded-Rod Clearance and Full-Set Carry

Choose the Klein 32933 for suitable hex-head jobs when you want all six SAE sizes stored on one shaft. Choose the 32940 when a matching threaded-rod job calls for its documented 3-3/4-inch hollow depth, accepting a six-driver set. Check fastener clearance first, then how much of the set you need to carry.

Published by Pickoryx · Published 2026-10-10

Source checked 2026-10-10 22:27 UTC

Products compared

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The buying question

Does the job need documented hollow depth, and how do you want to carry all six sizes?

The 32933 consolidates shallow flip sockets on one shaft; the 32940 supplies six separate drivers with documented hollow depth.

Quick verdict

When to skip: You require a hex size outside 1/4, 5/16, 3/8, 7/16, 1/2 and 9/16 inch. The task involves working on or near live electrical circuits; neither set is insulated.
When the recommendation changes
  • The rod projects farther into the tool than the available clearance permits.
  • You will carry only one selected size rather than the full six-size range.
  • The required hex size is outside the six sizes listed for both sets.

The differences that matter

Documented Threaded Rod Clearance

Klein Tools 32933 7-in-1 Impact Flip Socket Set, SAE

Shallow sockets intended for hex-head fasteners; the exact internal clearance is not specified.[1]

Klein Tools 32940 Magnetic Hollow Power Nut Driver Set, SAE, 6-Piece

Manufacturer-stated 3-3/4-inch hollow depth for working on threaded rod.[2]

What this changes: Choose the 32940 when the required rod clearance and fastener geometry fit its documented hollow depth. The 32933 suits matching shallow-socket jobs; its unspecified numerical clearance does not mean zero stud clearance.[1, 2]

The better fit depends on your priorities

Full Six Size Organization And Listed Weight

Klein Tools 32933 7-in-1 Impact Flip Socket Set, SAE

Flip sockets store on one shaft. The four-piece product lists 4.32 oz / 122 g.[1]

Klein Tools 32940 Magnetic Hollow Power Nut Driver Set, SAE, 6-Piece

Six separate power nut drivers. The six-piece set lists 16 oz / 454 g.[2]

What this changes: When all six sizes must travel together, the 32933 offers on-shaft organization and a lower manufacturer-listed product weight. These are listed product/set values: neither page defines whether packaging is included. They are not measured carry weights or weights for an individual 32940 driver.[1, 2]

The better fit depends on your priorities

Best for your routine

Taking the full six-size range to shallow hex-head jobs

Best fit: Klein Tools 32933 7-in-1 Impact Flip Socket Set, SAE

Based on listed features, not comparative testing.

The 32933 stores its flip sockets on the shaft and has the lower listed product weight. This choice assumes the socket geometry fits the work; it does not promise lower in-use fatigue or faster size changes.

View Klein Tools 32933 7-in-1 Impact Flip Socket Set, SAE on AmazonPaid link

A threaded-rod job that fits the documented hollow depth

Best fit: Klein Tools 32940 Magnetic Hollow Power Nut Driver Set, SAE, 6-Piece

Based on listed features, not comparative testing.

The 32940 supplies the stated 3-3/4-inch hollow depth. Verify rod and nut geometry as well as hex size; the depth is finite and does not establish pass-through operation. The full kit is six separate drivers.

View Klein Tools 32940 Magnetic Hollow Power Nut Driver Set, SAE, 6-Piece on AmazonPaid link

Value and trade-offs

One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.

If the 32940 costs more at checkout, its documented hollow depth is the reason to consider paying extra for a matching rod task. If shallow sockets fit your work, judge the 32933 by its full-range on-shaft organization rather than assuming the more expensive set is stronger.

There is not enough verified price history here to recommend buying now or waiting. Compare current offers for these exact models.

Limitations

  • Both sets are impact-rated, but no comparative torque, magnetic-retention, strength, fastening-speed or durability test supports a winner here.
  • The 32933 internal clearance is not numerically specified. The 32940 hollow depth is finite; confirm fit for the actual nut and rod rather than assuming unrestricted clearance.
  • Listed weights apply to the products/sets as described by Klein. Packaging treatment is unspecified, and the figures do not establish the weight of one hollow driver. A one-size carry choice needs a separate check.
  • Neither set is insulated or protects against electrical shock. Never use either on or near live electrical circuits. Wear approved eye protection and do not use either for prying or chiseling.

Questions shoppers ask

Does 7-in-1 mean the 32933 covers more nut sizes?

No. Both cover the same six SAE hex sizes: 1/4, 5/16, 3/8, 7/16, 1/2 and 9/16 inch. The 32933 adds a bit-holding function to those six sizes. This is separate from its four-piece count.

What if I only need one nut-driver size on the job?

Then the full-set carry comparison may not decide the purchase. Choose the required hex size and clearance first, and compare the specific pieces you will take. The 32940 set weight is not a single-driver weight.

Does the 32933 include a quick-connect handle?

No. Klein explicitly says its compatible quick-connect handles are not included with the 32933. Check the exact package if you need a hand-driving handle.

Methodology and sources

We compared the exact SAE 32933 and 32940 manufacturer pages for fastener clearance, six-size coverage, socket organization, listed product/set weights and safety warnings. Recommendations describe feature fit, not measured performance.

AI assisted with source research, drafting and editing this comparison. Pickoryx did not conduct hands-on testing of either set.

View 2 sources
  1. 1.7-in-1 Impact Flip Socket Set - 32933Klein Tools · Official specifications · Source checked 2026-10-10 22:11 UTC
    Evidence used on this page
    • Exact model heading; feature bullets; product description; Specifications: Socket Size/Included, Number of Pieces, Weight (oz/g), UPC; Warnings. 32933 also specifies on-shaft storage and handles not included.: Exact SAE 32933 shallow-depth flip socket set, six sizes, on-shaft socket storage, four pieces and listed 4.32 oz / 122 g; shared safety warnings.
  2. 2.Magnetic Hollow Color-Coded Power Nut Drivers Set, 6-Piece - 32940Klein Tools · Official specifications · Source checked 2026-10-10 22:11 UTC
    Evidence used on this page
    • Exact 32940 heading; feature bullets; description with 3-3/4-inch hollow depth; Specifications: Number of Pieces, Included hex sizes, Weight (oz/g), UPC; Warnings.: Exact SAE 32940 six-driver set, six matching sizes, documented 3-3/4-inch hollow depth and listed 16 oz / 454 g; shared safety warnings.