Thumbnuts are knobs fitted with female threaded aluminum inserts or machine tapped plastic threads.
Try our new Extended Knurled, Tri-lobe and Machine Tapped Thumbnuts.
Available in both inch and metric. Thumbnuts are currently only available in black.
NOTE: 1/4-20, 1/4-28 and M6X1.0 Extended Knurled Thumbnuts with aluminum threaded inserts have a thread length of 0.256″/6.5mm.






Due to the large number of combinations offered, narrow down the table results using the filters below.
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wdt_ID | Part # | Thread | Thread Material | Style | A | B | C | D | Measure Unit |
---|---|---|---|---|---|---|---|---|---|
1 | F99B-0440-0.18C | 4-40 | Aluminum | Knurled | 5/16" | 3/16" | 9/64" | 9/32" | Inch |
2 | F00B-0632-0.21C | 6-32 | Aluminum | Knurled | 3/8" | 7/32" | 11/64" | 23/64" | Inch |
3 | F01B-0832-0.26C | 8-32 | Aluminum | Knurled | 1/2" | 17/64" | 11/64" | 25/64" | Inch |
4 | F02B-1024-0.29C | 10-24 | Aluminum | Knurled | 5/8" | 19/64" | 11/64" | 29/64" | Inch |
5 | F02B-1032-0.29C | 10-32 | Aluminum | Knurled | 5/8" | 19/64" | 11/64" | 29/64" | Inch |
6 | F03B-2520-0.35C | 1/4-20 | Aluminum | Knurled | 3/4" | 23/64" | 11/64" | 17/32" | Inch |
7 | F03B-2528-0.35C | 1/4-28 | Aluminum | Knurled | 3/4" | 23/64" | 11/64" | 17/32" | Inch |
8 | F04B-2520-0.35C | 1/4-20 | Aluminum | Knurled | 1" | 23/64" | 19/64" | 9/16" | Inch |
9 | F04B-2528-0.35C | 1/4-28 | Aluminum | Knurled | 1" | 23/64" | 19/64" | 9/16" | Inch |
10 | F06B-3118-0.42C | 5/16-18 | Aluminum | Knurled | 1" | 27/64" | 19/64" | 41/64" | Inch |
Thread | Thread Material | Style | Measure Unit |