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Hex Keys — 3905 series specs & sizes

An L-shaped hex key with a ball point on the long arm, allowing for use at an angle. Made from durable chrome-molybdenum steel. Sizes, lengths and weights in American units.

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Written by David Crosbie

An L-shaped hex key with a ball point on the long arm, allowing for use at an angle. Made from durable chrome-molybdenum steel.

mm · CrMo

Features

  • Manufactured in Chrome molybdenum steel for added strength

  • Ball point end on the long key end giving access at angles of up to 25°

  • Ideal for use in confined spaces

  • Regular hex end on the short arm giving the ability to apply higher torque

  • Individually marked for size for easier identification

Sizes & specifications

Part no.

Size

Length

Weight

Docs

Availability

1.5 mm

3.0" (77 mm)

0.2 oz (7 g)

In store

2.5 mm

3.5" (90 mm)

0.3 oz (9 g)

In store

2 mm

3.3" (83 mm)

0.4 oz (10 g)

In store

3 mm

3.9" (98 mm)

0.5 oz (14 g)

In store

4 mm

4.2" (106 mm)

0.7 oz (20 g)

In store

5 mm

4.6" (118 mm)

1.2 oz (33 g)

In store

6 mm

5.4" (137 mm)

1.7 oz (47 g)

In store

8 mm

6.1" (156 mm)

3.0 oz (85 g)

In store

10 mm

6.7" (170 mm)

5.1 oz (145 g)

In store

Dimensions shown in inches with millimeters in parentheses — figures come straight from the official Teng Tools product data. Docs links open the official Teng Tools PDF data sheet, user manual or parts diagram for that part number.

Also included in these sets

Availability & help

Items marked “In store” are stocked at tengtoolsusa.com and ship from our Fort Worth, Texas warehouse. For anything marked “Ask us”, contact us — we can usually get it. Every Teng Tools hand tool carries our lifetime warranty against manufacturing defects.

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