Thumb Nuts
A thumb nut has a tall, knurled body you grip and turn by hand, giving tool-free tightening for covers, guards, jigs, instruments, and frequently-adjusted fixtures. Eugene Fastener & Supply stocks thumb nuts in steel, stainless, and brass, in common threads.
Where a wing nut uses two flared wings, a thumb nut uses a round knurled grip — better where wings would catch or where a cleaner profile is wanted. Choose stainless or brass for corrosion resistance and zinc steel for general use. By the piece or in bulk, same-day shipping before 2pm Pacific.
Goes Well With
- BRAKN#10-24
- #10 - 24 BRASS KNURLED NUTS
- F
- 0
- Weight: 0.0034400
| Diameter: | #10#10 |
| Thread pitch: | 2424 |
| Material: | BrassBrass |
| Finish: | PlainPlain |
| Part Number: | BRAKN#10-24BRAKN#10-24 |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Knurled NutKnurled Nut |
- BRAKN#10-32
- #10 - 32 BRASS KNURLED NUTS
- F
- 0
- Weight: 0.0034400
| Diameter: | #10#10 |
| Thread pitch: | 3232 |
| Material: | BrassBrass |
| Finish: | PlainPlain |
| Part Number: | BRAKN#10-32BRAKN#10-32 |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Knurled NutKnurled Nut |
- BRAKN#4-40
- #4 - 40 BRASS KNURLED NUTS
- F
- 0
- Weight: 0.0012000
| Diameter: | #4#4 |
| Thread pitch: | 4040 |
| Material: | BrassBrass |
| Finish: | PlainPlain |
| Part Number: | BRAKN#4-40BRAKN#4-40 |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Knurled NutKnurled Nut |
- BRAKN1/4-20
- 1/4" - 20 BRASS KNURLED NUTS
- F
- 0
- Weight: 0.0067000
| Diameter: | 1/41/4 |
| Thread pitch: | 2020 |
| Material: | BrassBrass |
| Finish: | PlainPlain |
| Part Number: | BRAKN1/4-20BRAKN1/4-20 |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Knurled NutKnurled Nut |
- BRAKN5/16-18
- 5/16"-18 NC KNURLED NUT BRASS
- F
- 0
- Weight: 0.0132000
| Diameter: | 5/165/16 |
| Thread pitch: | 1818 |
| Material: | BrassBrass |
| Finish: | PlainPlain |
| Part Number: | UNC (Coarse)UNC (Coarse) |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Knurled NutKnurled Nut |
- NKN1/4-20
- 1/4"-20 NYLON KNURLED THUMB NUT
- F
- 0
- Weight: 0.0100000
| Diameter: | 1/41/4 |
| Thread pitch: | 2020 |
| Material: | NylonNylon |
| Finish: | PlainPlain |
| Part Number: | NKN1/4-20NKN1/4-20 |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Knurled NutKnurled Nut |
- SHRF012B-1024-0.290C
- #10-24 SHEAR LOC THUMB NUT (BLACK ONLY STOCKED)
- F
- 0
- Weight: 0.0100000
| Diameter: | #10#10 |
| Thread pitch: | 2424 |
| Material: | SteelSteel |
| Finish: | PlainPlain |
| Part Number: | SHRF012B-1024-0.290CSHRF012B-1024-0.290C |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Shear-Loc Thumb NutShear-Loc Thumb Nut |
- SHRF01B-0832-0.260C
- #8-32 SHEAR LOC THUMB NUT (BLACK ONLY STOCKED)
- F
- 0
- Weight: 0.0100000
| Diameter: | #8#8 |
| Thread pitch: | 3232 |
| Material: | SteelSteel |
| Finish: | PlainPlain |
| Part Number: | SHRF01B-0832-0.260CSHRF01B-0832-0.260C |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Shear-Loc Thumb NutShear-Loc Thumb Nut |
- SHRF02B-1032-0.290C
- #10-32 SHEAR LOC THUMB NUT (BLACK ONLY STOCKED)
- F
- 0
- Weight: 0.0100000
| Diameter: | #10#10 |
| Thread pitch: | 3232 |
| Material: | SteelSteel |
| Finish: | PlainPlain |
| Part Number: | SHRF02B-1032-0.290CSHRF02B-1032-0.290C |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Shear-Loc Thumb NutShear-Loc Thumb Nut |
- SHRF03B-2520-0.350C
- 1/4-20 SHEAR LOC THUMB NUT (BLACK ONLY STOCKED)
- F
- 0
- Weight: 0.0092500
| Diameter: | 1/41/4 |
| Thread pitch: | 2020 |
| Material: | SteelSteel |
| Finish: | PlainPlain |
| Part Number: | |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Shear-Loc Thumb NutShear-Loc Thumb Nut |
- SHRF03B-2528-0.350C
- 1/4-28 SHEAR LOC THUMB NUT (BLACK ONLY STOCKED)
- F
- 0
- Weight: 0.0100000
| Diameter: | 1/41/4 |
| Thread pitch: | 2828 |
| Material: | SteelSteel |
| Finish: | PlainPlain |
| Part Number: | SHRF03B-2528-0.350CSHRF03B-2528-0.350C |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Shear-Loc Thumb NutShear-Loc Thumb Nut |
- SHRF06B-3118-0.420C
- 5/16-18 SHEAR LOC THUMB NUT (BLACK ONLY STOCKED)
- F
- 0
- Weight: 0.0100000
| Diameter: | 5/165/16 |
| Thread pitch: | 1818 |
| Material: | SteelSteel |
| Finish: | PlainPlain |
| Part Number: | SHRF06B-3118-0.420CSHRF06B-3118-0.420C |
| Thread: | Thumb NutsThumb Nuts |
| tYPE: | Shear-Loc Thumb NutShear-Loc Thumb Nut |
No items match your selected filters. Please change or reset your filters to try again.
Thumb Nuts — Knurled Hand Tightening
Need these for a production run or a specific size?
Get Job Pricing / Submittals Email Sales
Thumb Nut vs Wing Nut
Both tighten by hand with no tool. A thumb nut has a knurled cylindrical grip that gives a clean profile and works where wings would snag; a wing nut has two flared wings for more leverage by hand. Pick by clearance and grip preference. Both are light-to-moderate clamp load; for high torque use a hex nut and wrench.
FAQ
What is a thumb nut?
A thumb nut is a hand-tightening nut with a tall, knurled body you grip and turn without a tool. It is used for covers, guards, jigs, instruments, and frequently-adjusted fixtures.
What is the difference between a thumb nut and a wing nut?
Both are tool-free. A thumb nut has a round knurled grip and a cleaner profile; a wing nut has two flared wings for more hand leverage. Choose by clearance and feel.
What materials do thumb nuts come in?
Steel (zinc), stainless, and brass in common threads. Use stainless or brass for corrosion resistance and electrical or decorative work.
How much can you tighten a thumb nut?
Light to moderate clamp load by hand. For high or load-rated clamping, use a hex nut and wrench.
Why Buy from Eugene Fastener
- By the piece or in bulk, with cross-reference help.
- Same-day shipping on orders placed before 2pm Pacific.
- Since 1969 — serving Pacific Northwest manufacturers, contractors, and equipment makers for over 55 years.
Thumb nuts complement our wing nuts for tool-free assembly. Browse all nut types or contact our sales team for sizing, cross-references, or bulk pricing. Eugene Fastener & Supply — serving the Pacific Northwest since 1969.
View Cart
View Wishlist