Aluminum Hand Knob - Tapped 4 Lobe

Aluminum Hand Knob - Tapped 4 Lobe
Aluminum Hand Knob - Tapped 4 Lobe
Aluminum Hand Knob - Tapped 4 Lobe

This 4 lobbed aluminum hand knob is manufactured from the highest quality aluminum, and is designed to meet the requirements of even the most demanding industrial applications. The 4 lobe design of this hand knob (also known as a clamping knob) ensures positive palm and finger grip, each and every time. Available in a clear anodized finish, and features a blank hub with centering spot. Contact one of our sales engineers concerning specialty bores, taps and set screws. Inch and metric versions available.  Please see component diagram below.

JBF National Part Number / InchThreadReamed Dia"A""B""C""D"
1HKA-1010-Solid1"7/8"1/2"1/2"
1HKA-10111/4-20 Tapped-1"7/8"1/2"1/2"
1HKA-10121/4-20 Tapped Through-1"7/8"1/2"1/2"
1HKA-1013-1/4"1"7/8"1/2"1/2"
2HKA-1014-Solid1 1/2"7/8"5/8"3/8"
2HKA-10155/16-18 Tapped-1 1/2"7/8"5/8"3/8"
2HKA-10165/16-18 Tapped Through-1 1/2"7/8"5/8"3/8"
2HKA-1017-5/16"1 1/2"7/8"5/8"3/8"
3HKA-1018-Solid2"1"13/16"1/2"
3HKA-10193/8-16 Tapped-2"1"13/16"1/2"
3HKA-10203/8-16 Tapped Through-2"1"13/16"1/2"
3HKA-1021-3/8"2"1"13/16"1/2"
4HKA-1022-Solid2 1/2"1 1/8"1"9/16"
4HKA-10231/2-13 Tapped-2 1/2"1 1/8"1"9/16"
4HKA-10241/2-13 Tapped Through-2 1/2"1 1/8"1"9/16"
4HKA-1025-1/2"2 1/2"1 1/8"1"9/16"
5HKA-1026-Solid3"1 1/4"1 1/4"5/8"
5HKA-10275/8-11 Tapped-3"1 1/4"1 1/4"5/8"
5HKA-10285/8-11 Tapped Through-3"1 1/4"1 1/4"5/8"
5HKA-10295/8"3"1 1/4"1 1/4"5/8"
JBF National Part Number / Metric ThreadReamed Dia"A""B""C""D"Ship Wt (lbs)
1HKA-1040-Solid252213130.02
1HKA-1041M6 Tapped-252213130.02
1HKA-1042M6 Tapped Through-252213130.02
1HKA-1043-6252213130.02
2HKA-1044-Solid382216100.05
2HKA-1045M8 Tapped-382216100.05
2HKA-1046M8 Tapped Through-382216100.05
2HKA-1047-8382216100.05
3HKA-1048-Solid512530130.08
3HKA-1049M10 Tapped-512530130.08
3HKA-1050M10 Tapped Through-512530130.08
3HKA-1051-10512530130.08
4HKA-1052-Solid642925140.14
4HKA-1053M12 Tapped-642925140.14
4HKA-1054M12 Tapped Through-642925140.14
4HKA-1055-12642925140.14
5HKA-1056-Solid763232160.22
5HKA-1057M16 Tapped-763232160.22
5HKA-1058M16 Tapped Through-763232160.22
5HKA-1059-16763232160.22