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TEKTON 1/2 Inch Drive x 3 Inch Impact Extension
1/2 Inch Drive x 3 Inch Impact Extension. Attach an extension to your drive tool to reach past obstructions or into tight, narrow spaces. SIA21103.
1/2 Inch Drive x 3 Inch Impact Extension. Attach an extension to your drive tool to reach past obstructions or into tight, narrow spaces. SIA21103.
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Item #SIA21103

1/2 Inch Drive x 3 Inch Impact Extension

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Length

3 in.
$7
6 in.
$9
10 in.
$11
$7.00
DetailsSpecs

Details

Tekton impact extensions are for use with impact tools

Extend Your Reach

Attach an extension to your drive tool to reach past obstructions or into tight spaces.

Drive Tool Retention

Extensions work with both types of anvils found on 1/2 inch drive impact wrenches:
Graphic showing green check marks on friction ring anvil and detent pin anvil
Available in 3, 6, and 10 inch lengths

Available in Three Lengths

50BV30 Chromium-Vanadium (Cr-V)

Carbon: 0.27 - 0.33%
Chromium: 0.30 - 0.50%
Manganese: 0.70 - 1.00%
Phosphorous: ≤0.030%
Silicon: ≤0.10%
Sulfur: ≤0.030%
Vanadium: 0.10 - 0.15%
Boron: ≥0.0005%
Iron: 97.86 - 98.47%

4140 Chromium-Molybdenum (Cr-Mo)

Carbon: 0.38 - 0.43%
Chromium: 0.80 - 1.10%
Manganese: 0.75 - 1.00%
Molybdenum: 0.15 - 0.30%
Nickel: ≤0.025%
Phosphorous: ≤0.025%
Silicon: 0.15 - 0.35%
Sulfur: ≤0.025%
Iron: 96.74 - 97.69%

6140 Chromium-Vanadium (Cr-V)

Carbon: 0.38 - 0.43%
Chromium: 0.50 - 0.70%
Manganese: 0.6 - 0.9%
Nickel: ≤0.030%
Phosphorous: ≤0.030%
Silicon: 0.15 - 0.35%
Sulfur: ≤0.030%
Vanadium: 0.10 - 0.15%
Iron: 97.38 - 98.18%

8660 Nickel-Chromium-Molybdenum (Ni-Cr-Mo)

Carbon: 0.56 - 0.64%
Chromium: 0.40 - 0.60%
Manganese: 0.75 - 1.00%
Molybdenum: 0.15 - 0.25%
Nickel: 0.40 - 0.70%
Phosphorous: ≤0.035%
Silicon: 0.15 - 0.35%
Sulfur: ≤0.04%
Vanadium: 0.15 - 0.25%
Iron: 96.13 - 97.36%

Sockets (Standard and Deep Lengths)

INCH

Sockets that use 50BV30 Cr-V

5/16 – 1-1/4 in.
(50BV30 Cr-V)

Sockets that use 4140 Cr-Mo

1-5/16 – 2 in.
(4140 Cr-Mo)

METRIC

Sockets that use 50BV30 Cr-V

8 – 32 mm
(50BV30 Cr-V)

Sockets that use 4140 Cr-Mo

33 – 38 mm
(4140 Cr-Mo)

Accessories

Impact socket extensions that use 6140 Cr-V

3 in., 6 in., and 10 in. Extensions
(6140 Cr-V)

Impact socket adapter and reducer that use 8660 Ni-Cr-Mo

Adapter and Reducer
(8660 Ni-Cr-Mo)

Color coded icons showing that impact universal joints use 8660 Ni-Cr-Mo for the ball end and 4140 Cr-Mo for the socket end

Universal Joint
(Ball: 8660 Ni-Cr-Mo)
(Socket: 4140 Cr-Mo)

High-Performing Steel Alloys

Part by part, we choose the best combination of steel alloys, heat treating specifications, and forming processes to meet the highest performance requirements. All pieces have a corrosion-resistant manganese phosphate coating.
Learn More

Specs

1/2 Inch Drive x 3 Inch Impact Extension

Specs for 1/2 Inch Drive x 3 Inch Impact Extension
Country of Origin
Taiwan
Item Weight
0.31 lb.