1/2" Extensions | McMaster-Carr

	System of Measurement System of Measurement

	Length Length

4 1/4" to 5 1/2"

	Square Drive Size Square Drive Size

	Socket Type Socket Type


Extension	Hex Shank to Square Drive Adapter

Square Drive Size Adapter	Secure-Hold Extension

Torque- Limiting Adapter	Flex Adapter

Hex Head Adapter	Secure-Hold Socket Adapter

Ratchet Adapter	Torque-and- Angle Measuring Adapter

Quick-Change Adapter

	Material Material

Aluminum-Bronze

High-Speed Steel

Stainless Steel

	Finish Finish

Hot-Dipped Galvanized

Titanium Nitride (TiN)
Coated

Zinc-Flake Coated

	Spring Type Spring Type

	Strip
	Extension
	Rotor
	Garter

	Thread Size Thread Size

	OD OD

	End Type End Type

Straight Wire
with Double
Loop

	Individual/Set Individual/Set

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Drive Type Drive Type

Nonimpact Power

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Wire Diameter Wire Diameter

	Extended Length @ Maximum Load Extended Length @ Maximum Load

	Load Load

0.92-10.99 lbs.

1.04-11.38 lbs.

1.05-11.65 lbs.

1.13-11.31 lbs.

1.17-12.33 lbs.

1.17-12.99 lbs.

1.17-13.08 lbs.

1.17-13.16 lbs.

1.18-11.25 lbs.

1.27-14.41 lbs.

1.29-14.38 lbs.

1.33-14.66 lbs.

1.34-11.26 lbs.

1.39-15.29 lbs.

1.39-15.46 lbs.

1.42-15.33 lbs.

1.42-15.66 lbs.

1.48-16.34 lbs.

1.54-14.25 lbs.

1.55-17.26 lbs.

1.57-11.22 lbs.

1.57-17.47 lbs.

1.57-17.51 lbs.

1.58-10.45 lbs.

1.58-16.49 lbs.

1.58-17.24 lbs.

1.67-18.49 lbs.

1.67-18.52 lbs.

1.74-14.74 lbs.

1.74-14.79 lbs.

1.74-16.44 lbs.

1.74-17.16 lbs.

1.74-17.17 lbs.

1.74-18.48 lbs.

1.82-20.17 lbs.

1.84-10.18 lbs.

1.85-10.18 lbs.

1.89-20.97 lbs.

1.89-21.02 lbs.

1.92-21.31 lbs.

1.94-21.54 lbs.

1.95-14.21 lbs.

2.18-24.21 lbs.

2.25-15.16 lbs.

2.25-24.99 lbs.

2.29-16.29 lbs.

2.29-19.56 lbs.

2.29-25.41 lbs.

2.31-10.36 lbs.

2.31-15.12 lbs.

2.31-25.67 lbs.

2.33-25.86 lbs.

2.34-10.39 lbs.

2.34-12.48 lbs.

2.38-10.03 lbs.

2.38-10.07 lbs.

2.38-11.03 lbs.

2.38-11.76 lbs.

2.57-12.08 lbs.

2.57-12.25 lbs.

2.59-11.76 lbs.

2.59-14.11 lbs.

2.59-14.12 lbs.

2.64-10.88 lbs.

2.64-11.36 lbs.

2.65-11.99 lbs.

2.69-14.35 lbs.

2.75-30.51 lbs.

2.76-11.17 lbs.

2.76-12.08 lbs.

2.77-30.82 lbs.

2.83-31.49 lbs.

2.84-14.94 lbs.

2.88-20.03 lbs.

2.88-24.05 lbs.

3.09-20.95 lbs.

3.09-34.33 lbs.

3.16-14.95 lbs.

3.17-20.23 lbs.

3.17-35.19 lbs.

3.26-13.59 lbs.

3.26-13.96 lbs.

3.26-13.97 lbs.

3.26-13.99 lbs.

3.44-11.75 lbs.

3.46-15.65 lbs.

3.47-15.66 lbs.

3.47-18.79 lbs.

3.51-11.76 lbs.

3.51-12.58 lbs.

3.52-14.68 lbs.

3.52-15.52 lbs.

3.52-15.58 lbs.

3.52-16.71 lbs.

3.52-18.67 lbs.

3.55-23.79 lbs.

3.56-28.55 lbs.

3.65-10.48 lbs.

3.65-11.26 lbs.

3.71-41.21 lbs.

3.73-13.92 lbs.

3.84-15.58 lbs.

3.92-19.31 lbs.

3.96-44.03 lbs.

4.08-26.29 lbs.

4.08-45.23 lbs.

4.12-16.36 lbs.

4.12-28.07 lbs.

4.12-45.78 lbs.

4.15-15.78 lbs.

4.15-16.73 lbs.

4.26-12.86 lbs.

4.33-18.06 lbs.

4.33-18.16 lbs.

4.34-35.29 lbs.

4.51-15.46 lbs.

4.59-51.02 lbs.

4.61-20.08 lbs.

4.61-21.62 lbs.

4.61-21.64 lbs.

4.69-11.86 lbs.

4.69-12.73 lbs.

4.77-26.38 lbs.

4.82-28.65 lbs.

4.82-53.59 lbs.

4.87-24.95 lbs.

4.88-24.95 lbs.

4.91-19.17 lbs.

4.95-54.96 lbs.

5.01-11.46 lbs.

5.05-21.64 lbs.

5.09-33.36 lbs.

5.09-56.54 lbs.

5.12-23.35 lbs.

5.15-57.16 lbs.

5.22-14.17 lbs.

5.22-15.19 lbs.

5.22-36.64 lbs.

5.22-58.05 lbs.

5.36-15.72 lbs.

5.36-16.76 lbs.

5.51-61.25 lbs.

5.54-18.98 lbs.

5.58-62.05 lbs.

5.77-24.45 lbs.

5.77-24.46 lbs.

5.77-26.38 lbs.

5.79-64.33 lbs.

6.01-44.96 lbs.

6.04-34.17 lbs.

6.06-17.94 lbs.

6.11-67.87 lbs.

6.14-31.37 lbs.

6.18-68.62 lbs.

6.27-69.69 lbs.

6.45-17.18 lbs.

6.45-18.32 lbs.

6.49-15.79 lbs.

6.49-16.89 lbs.

6.53-30.32 lbs.

6.59-46.71 lbs.

6.59-73.25 lbs.

6.62-73.62 lbs.

6.63-22.13 lbs.

6.63-23.28 lbs.

6.67-21.35 lbs.

6.67-25.63 lbs.

6.78-23.94 lbs.

6.95-30.34 lbs.

6.97-77.43 lbs.

7.02-54.62 lbs.

7.03-25.97 lbs.

7.03-41.17 lbs.

7.19-31.18 lbs.

7.31-25.64 lbs.

7.35-30.71 lbs.

7.35-36.87 lbs.

7.36-36.86 lbs.

7.41-37.61 lbs.

7.43-27.27 lbs.

7.43-28.22 lbs.

7.44-26.55 lbs.

7.44-27.35 lbs.

7.52-23.43 lbs.

7.52-24.64 lbs.

7.54-20.68 lbs.

7.54-21.92 lbs.

7.54-26.83 lbs.

7.56-83.98 lbs.

7.59-31.09 lbs.

7.59-31.18 lbs.

7.59-31.38 lbs.

7.59-33.94 lbs.

7.59-33.97 lbs.

7.82-16.82 lbs.

7.91-46.58 lbs.

7.91-87.89 lbs.

7.91-87.94 lbs.

7.95-88.38 lbs.

8.06-53.88 lbs.

8.06-89.61 lbs.

8.37-92.95 lbs.

8.53-33.18 lbs.

8.69-19.92 lbs.

8.69-21.24 lbs.

8.71-27.34 lbs.

8.71-32.82 lbs.

8.72-27.34 lbs.

8.75-31.18 lbs.

8.87-22.39 lbs.

8.87-29.43 lbs.

8.92-31.92 lbs.

8.92-44.35 lbs.

8.95-16.75 lbs.

9.14-56.93 lbs.

9.14-68.34 lbs.

9.14-101.54 lbs.

9.16-52.94 lbs.

9.24-21.38 lbs.

9.35-37.07 lbs.

9.35-44.51 lbs.

9.36-44.51 lbs.

9.5-105.51 lbs.

9.51-27.74 lbs.

9.68-107.57 lbs.

10.13-40.69 lbs.

10.13-40.77 lbs.

10.13-43.65 lbs.

10.13-43.69 lbs.

10.13-43.71 lbs.

10.25-40.68 lbs.

10.31-44.3 lbs.

10.41-37.41 lbs.

10.62-40.09 lbs.

10.73-60.75 lbs.

10.73-119.22 lbs.

10.88-44.38 lbs.

10.89-53.27 lbs.

10.89-53.28 lbs.

10.97-67.6 lbs.

10.97-121.9 lbs.

11.03-40.47 lbs.

11.04-33.7 lbs.

11.04-40.46 lbs.

12.15-70.59 lbs.

12.15-135.09 lbs.

12.59-42.12 lbs.

12.62-18.11 lbs.

12.62-29.97 lbs.

12.62-30.39 lbs.

12.62-45.61 lbs.

12.73-26.81 lbs.

12.73-28.47 lbs.

12.83-35.24 lbs.

12.88-143.12 lbs.

13.09-55.75 lbs.

13.12-30.58 lbs.

13.12-32.16 lbs.

13.19-51.56 lbs.

13.19-51.57 lbs.

13.19-51.86 lbs.

13.19-55.23 lbs.

13.19-55.24 lbs.

13.32-36.6 lbs.

13.6-42.76 lbs.

13.61-41.2 lbs.

13.61-49.46 lbs.

13.62-41.21 lbs.

13.63-49.45 lbs.

13.82-31.02 lbs.

13.87-54.87 lbs.

13.87-54.88 lbs.

13.87-65.87 lbs.

13.88-65.86 lbs.

13.94-46.54 lbs.

14.08-28.21 lbs.

14.08-29.91 lbs.

14.28-84.46 lbs.

14.28-101.38 lbs.

14.28-101.39 lbs.

14.59-162.17 lbs.

14.89-38.1 lbs.

15.55-49.74 lbs.

16.48-58.22 lbs.

16.95-56.67 lbs.

18.05-122.07 lbs.

18.06-122.07 lbs.

18.22-65.96 lbs.

18.89-40.9 lbs.

18.89-54.5 lbs.

18.99-72.9 lbs.

19.83-59.37 lbs.

19.84-71.26 lbs.

20.8-57.56 lbs.

20.8-87.75 lbs.

22.89-49.02 lbs.

23.24-53.78 lbs.

23.24-68.3 lbs.

23.74-84.89 lbs.

24.02-92.42 lbs.

24.19-88.58 lbs.

24.19-106.33 lbs.

26.68-89.92 lbs.

27.07-62.45 lbs.

27.07-78.61 lbs.

29.41-105.62 lbs.

29.41-126.79 lbs.

34.85-95.5 lbs.

34.85-114.65 lbs.

36.12-128.28 lbs.

36.12-153.99 lbs.

36.13-153.99 lbs.

43.55-151.31 lbs.

43.55-181.64 lbs.

43.55-181.65 lbs.

44.11-117.98 lbs.

44.99-78.72 lbs.

46.22-78.59 lbs.

54.45-141.76 lbs.

54.45-141.77 lbs.

54.45-170.18 lbs.

55.24-176.76 lbs.

55.79-140.57 lbs.

57.14-202.5 lbs.

58.5-155.18 lbs.

65.96-152.94 lbs.

71.71-178.09 lbs.

71.72-178.09 lbs.

71.72-213.79 lbs.

75.04-162.7 lbs.

85.08-207.87 lbs.

85.08-249.54 lbs.

85.09-207.86 lbs.

85.1-249.53 lbs.

	Color Color

	Spring Rate Spring Rate