Klein Tools Extra Capacity Adjustable Wrench 8-Inch with 1.125" Jaw Capacity Professional Hand Tool
Professional extra capacity design for confined space applications
Klein Tools delivers professional-grade performance with this 8-inch extra capacity adjustable wrench featuring 1.125" jaw capacity and forged heat-treated alloy steel construction. The precision-machined jaws are individually chosen and assembled by hand for smooth operation, while the high polish chrome finish provides rust resistance and long-lasting durability. This extra capacity design allows use of a smaller size wrench to handle bigger jobs, especially in confined spaces where standard wrenches cannot fit.
Professional Features & Benefits
- Extra Capacity Design: 1.125" jaw capacity allows smaller wrench to handle bigger jobs in confined spaces where standard tools cannot reach
- Precision-Machined Jaws: Individually chosen and hand-assembled components ensure smooth operation and precise fit on fasteners
- Forged Heat-Treated Alloy Steel: Maximum strength construction with lightweight design for reduced user fatigue during extended use
- High Polish Chrome Finish: Provides superior rust resistance and corrosion protection for long-lasting tool life
- Contoured Handle Design: Plastic-dipped transparent red handle with 5.5" length delivers comfortable grip and control
- Ground Rail Construction: Precision-ground rail ensures accurate fit and smooth knurl operation for easy adjustment
Technical Specifications
- Accessories: TT1, TT2
- Department: Electrical
- Handle Color: Transparent Red
- Handle Finish: Plastic-Dipped
- Handle Length: 5.5" (14 cm)
- Item Depth: 8.2500 in
- Item Height: 1.0000 in
- Item Weight: 0.6600 lbs
- Item Width: 1.0000 in
- Jaw Capacity: 1.125" (2.9 cm)
- Material: Steel
- Overall Height: 0.5" (1.3 cm)
- Overall Length: 8.25" (21 cm)
- Overall Width: 2.25" (5.7 cm)
- Product Details: Extra Capacity Adjustable Wrench
- Product Group: Hand Tools
- Product Subgroup: Hammers & Wrenches
- Product Type: Extra Capacity Adjustable Wrench
- Weight: 10.6 oz (300 kg)
Professional Applications
- Electrical panel and junction box work in confined spaces
- HVAC system maintenance and repair
- Plumbing fixture installation and service
- Automotive and machinery maintenance
- General maintenance and repair operations
- Professional contractor and technician use
Why Choose Klein Tools Quality?
Klein Tools delivers professional-grade reliability with forged heat-treated alloy steel construction and precision manufacturing processes. The chrome-plated finish and heat-treated components ensure long tool life, while the hand-assembled precision-machined jaws provide consistent performance for demanding professional applications.
Manufacturer Resources
Spec Sheet
Product Specs
- Accessories:
- TT1, TT2
- Handle Color:
- Transparent Red
- Handle Finish:
- Plastic-Dipped
- Handle Length:
- 5.5" (14 cm)
- Item Depth:
- 8.2500 in
- Item Height:
- 1.0000 in
- Item Weight:
- 0.6600 lbs
- Item Width:
- 1.0000 in
- Jaw Capacity:
- 1.125" (2.9 cm)
- Overall Height:
- 0.5" (1.3 cm)
- Overall Length:
- 8.25" (21 cm)
- Overall Width:
- 2.25" (5.7 cm)
- Department:
- Electrical
- Product Group:
- Hand Tools
- Product Subgroup:
- Hammers & Wrenches
- Product Type:
- Adjustable Wrench
- Product Details:
- Extra Capacity Adjustable Wrench
- Product Material:
- Steel
- Product Weight:
- 10.6 oz (300 kg)
- Product Width:
- 1 in
- Product Depth:
- 8.25 in
- Product Height:
- 1 in
Klein Tools D507-8 – Frequently Asked Questions
1) Will this adjustable wrench fit inside a panel or junction box to work a locknut?
That is the use it is built for. Overall length is 8.25 inches with an overall width of 2.25 inches and overall height of 0.5 inches, so the head is thin and the body short enough to get into a panel interior or a junction box. The extra 1.125 inch jaw opening means you still get onto a large conduit locknut or fitting without stepping up to a longer wrench you can't swing in the enclosure.
2) Is the handle on this Klein adjustable wrench insulated for live electrical work?
No. The handle is plastic-dipped in transparent red over a 5.5 inch grip length, which is a comfort and grip coating, not an insulating rating. For energized work you need a tool rated and marked for it. Treat the D507-8 as a standard hand tool for de-energized work.
3) Should I buy the 8-inch extra capacity adjustable wrench or a standard 10-inch wrench?
It comes down to swing room versus leverage. The extra capacity 8-inch opens to 1.125 inches, so it reaches fastener sizes you would normally need a longer wrench for, while keeping an 8.25 inch overall length that fits confined work like panel interiors and tight mechanical spaces. A standard 10-inch gives you more handle for breaking torque on stubborn fasteners, but it needs room to turn. If you are mostly working inside enclosures or between framing, the extra capacity 8-inch is the better call.
4) What is the exact part number to order this Klein extra capacity adjustable wrench for a standardized tool list?
Order Klein Tools D507-8. That is the 8-inch extra capacity adjustable wrench with the 1.125 inch jaw, and it is the only configuration under that number, so there is no finish or handle option to specify. For a crew kit it is a single-line item.
5) How much does the Klein D507-8 adjustable wrench weigh for a tool belt or pouch?
10.6 oz, listed as 0.66 lbs. For a pouch or belt loop that is light enough to carry all day alongside pliers and drivers, and at 8.25 inches overall it sits in a standard tool pouch without sticking out.
6) What is the Klein D507-8 wrench made of, and will it rust in a damp crawlspace or outdoors?
Forged heat-treated alloy steel with a high-polish chrome finish. The chrome plating is what resists rust and corrosion, so it holds up in damp service conditions better than a bare or black-oxide wrench. Wipe it down after wet work and the plating does its job.
7) Does the jaw on the Klein D507-8 stay tight, or does it slip under load?
The jaws are precision-machined, individually selected and hand-assembled, and the rail is precision-ground. That combination is what keeps jaw play down so the wrench sits square on the flats instead of rocking and rounding a nut. The knurl turns smoothly on the ground rail for one-handed adjustment.
How fast can I get the Klein Tools D507-8 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools D507-8 come with a warranty?
Absolutely. The Klein Tools D507-8 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools D507-8?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
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