Nuts - Thumb - Collared - Stainless

9 Products in this selection
  • This is the main category in this series
Additional resources:
Thumb Screws and Nuts PDF Quick Guide
Pan Head Screws
Screws
A more concise listing may be found on the Smallparts store at Nuts - Thumb - Collared - Stainless. Smallparts promote the most popular MBA products.
Thread Size Overall Length (C) Head Width (B) Head Diameter (A) Shoulder Diameter Shoulder Height Indicative
Image
Thread Size
2-56 UNC (2.18mm)
Overall Length (C)
6.4
mm

(0.252 in.)
Head Width (B)
3.18
mm

(0.125 in.)
Head Diameter (A)
6.35
mm
Thumb Nuts - 2-56 UNC -2.18mm- 6.4x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 4.76 mm    Collar Height (D): 3.18 mm   
Part Number: NT022C-THC-S3 Thumb Nuts - 2-56 UNC - 2.18mm - 6.4x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$11.23 AUD
$11.23 AUD
Each
Thread Size Overall Length (C) Head Width (B) Head Diameter (A) Indicative
Image
Thread Size
2-56 UNC (2.18mm)
Overall Length (C)
6.4
mm

(0.252 in.)
Head Width (B)
3.18
mm

(0.125 in.)
Head Diameter (A)
6.35
mm
Thumb Nuts - 2-56 UNC -2.18mm- 6.4x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 4.76 mm    Collar Height (D): 3.18 mm   
Part Number: NT022C-THC-S3 Thumb Nuts - 2-56 UNC - 2.18mm - 6.4x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$11.23 AUD
$11.23 AUD
Each
View the product page first if you are unsure.
Thread Size
4-40 UNC (2.85mm)
Overall Length (C)
6.4
mm

(0.252 in.)
Head Width (B)
3.18
mm

(0.125 in.)
Head Diameter (A)
7.94
mm
Thumb Nuts - 4-40 UNC -2.85mm- 6.4x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 6.35 mm    Collar Height (D): 3.18 mm   
Part Number: NT028C-THC-S3 Thumb Nuts - 4-40 UNC - 2.85mm - 6.4x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$13.77 AUD
$13.77 AUD
Each
Thread Size
4-40 UNC (2.85mm)
Overall Length (C)
6.4
mm

(0.252 in.)
Head Width (B)
3.18
mm

(0.125 in.)
Head Diameter (A)
7.94
mm
Thumb Nuts - 4-40 UNC -2.85mm- 6.4x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 6.35 mm    Collar Height (D): 3.18 mm   
Part Number: NT028C-THC-S3 Thumb Nuts - 4-40 UNC - 2.85mm - 6.4x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$13.77 AUD
$13.77 AUD
Each
View the product page first if you are unsure.
Thread Size
6-32 UNC (3.5mm)
Overall Length (C)
7.1
mm

(0.28 in.)
Head Width (B)
3.18
mm

(0.125 in.)
Head Diameter (A)
9.53
mm
Thumb Nuts - 6-32 UNC -3.5mm- 7.1x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 8.73 mm    Collar Height (D): 3.97 mm   
Part Number: NT035C-THC-S3 Thumb Nuts - 6-32 UNC - 3.5mm - 7.1x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$15.32 AUD
$15.32 AUD
Each
Thread Size
6-32 UNC (3.5mm)
Overall Length (C)
7.1
mm

(0.28 in.)
Head Width (B)
3.18
mm

(0.125 in.)
Head Diameter (A)
9.53
mm
Thumb Nuts - 6-32 UNC -3.5mm- 7.1x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 8.73 mm    Collar Height (D): 3.97 mm   
Part Number: NT035C-THC-S3 Thumb Nuts - 6-32 UNC - 3.5mm - 7.1x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$15.32 AUD
$15.32 AUD
Each
View the product page first if you are unsure.
Thread Size
8-32 UNC (4.17mm)
Overall Length (C)
7.1
mm

(0.28 in.)
Head Width (B)
3.18
mm

(0.125 in.)
Head Diameter (A)
11.11
mm
Thumb Nuts - 8-32 UNC -4.17mm- 7.1x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 9.53 mm    Collar Height (D): 3.97 mm   
Part Number: NT042C-THC-S3 Thumb Nuts - 8-32 UNC - 4.17mm - 7.1x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$19.41 AUD
$19.41 AUD
Each
Thread Size
8-32 UNC (4.17mm)
Overall Length (C)
7.1
mm

(0.28 in.)
Head Width (B)
3.18
mm

(0.125 in.)
Head Diameter (A)
11.11
mm
Thumb Nuts - 8-32 UNC -4.17mm- 7.1x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 9.53 mm    Collar Height (D): 3.97 mm   
Part Number: NT042C-THC-S3 Thumb Nuts - 8-32 UNC - 4.17mm - 7.1x3.18 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$19.41 AUD
$19.41 AUD
Each
View the product page first if you are unsure.
Thread Size
10-24 UNC (4.76mm)
Overall Length (C)
8.7
mm

(0.343 in.)
Head Width (B)
3.97
mm

(0.156 in.)
Head Diameter (A)
12.70
mm
Thumb Nuts - 10-24 UNC -4.76mm- 8.7x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 10.32 mm    Collar Height (D): 4.76 mm   
Part Number: NT048C-THC-S3 Thumb Nuts - 10-24 UNC - 4.76mm - 8.7x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$22.95 AUD
$22.95 AUD
Each
Thread Size
10-24 UNC (4.76mm)
Overall Length (C)
8.7
mm

(0.343 in.)
Head Width (B)
3.97
mm

(0.156 in.)
Head Diameter (A)
12.70
mm
Thumb Nuts - 10-24 UNC -4.76mm- 8.7x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 10.32 mm    Collar Height (D): 4.76 mm   
Part Number: NT048C-THC-S3 Thumb Nuts - 10-24 UNC - 4.76mm - 8.7x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$22.95 AUD
$22.95 AUD
Each
View the product page first if you are unsure.
Thread Size
10-32 UNF (4.76mm)
Overall Length (C)
8.7
mm

(0.343 in.)
Head Width (B)
3.97
mm

(0.156 in.)
Head Diameter (A)
12.70
mm
Thumb Nuts - 10-32 UNF -4.76mm- 8.7x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 10.32 mm    Collar Height (D): 4.76 mm   
Part Number: NT048F-THC-S3 Thumb Nuts - 10-32 UNF - 4.76mm - 8.7x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$26.23 AUD
$26.23 AUD
Each
Thread Size
10-32 UNF (4.76mm)
Overall Length (C)
8.7
mm

(0.343 in.)
Head Width (B)
3.97
mm

(0.156 in.)
Head Diameter (A)
12.70
mm
Thumb Nuts - 10-32 UNF -4.76mm- 8.7x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 10.32 mm    Collar Height (D): 4.76 mm   
Part Number: NT048F-THC-S3 Thumb Nuts - 10-32 UNF - 4.76mm - 8.7x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$26.23 AUD
$26.23 AUD
Each
View the product page first if you are unsure.
Thread Size
1/4-20 UNC (6.35mm)
Overall Length (C)
9.5
mm

(0.374 in.)
Head Width (B)
3.97
mm

(0.156 in.)
Head Diameter (A)
14.29
mm
Thumb Nuts - 1/4-20 UNC -6.35mm- 9.5x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 11.91 mm    Collar Height (D): 5.56 mm   
Part Number: NT064C-THC-S3 Thumb Nuts - 1/4-20 UNC - 6.35mm - 9.5x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$29.95 AUD
$29.95 AUD
Each
Thread Size
1/4-20 UNC (6.35mm)
Overall Length (C)
9.5
mm

(0.374 in.)
Head Width (B)
3.97
mm

(0.156 in.)
Head Diameter (A)
14.29
mm
Thumb Nuts - 1/4-20 UNC -6.35mm- 9.5x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 11.91 mm    Collar Height (D): 5.56 mm   
Part Number: NT064C-THC-S3 Thumb Nuts - 1/4-20 UNC - 6.35mm - 9.5x3.97 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$29.95 AUD
$29.95 AUD
Each
View the product page first if you are unsure.
Thread Size
5/16-18 UNC (7.94mm)
Overall Length (C)
10.3
mm

(0.406 in.)
Head Width (B)
4.76
mm

(0.187 in.)
Head Diameter (A)
15.88
mm
Thumb Nuts - 5/16-18 UNC -7.94mm- 10.3x4.76 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 13.49 mm    Collar Height (D): 5.56 mm   
Part Number: NT079C-THC-S3 Thumb Nuts - 5/16-18 UNC - 7.94mm - 10.3x4.76 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$34.77 AUD
$34.77 AUD
Each
Thread Size
5/16-18 UNC (7.94mm)
Overall Length (C)
10.3
mm

(0.406 in.)
Head Width (B)
4.76
mm

(0.187 in.)
Head Diameter (A)
15.88
mm
Thumb Nuts - 5/16-18 UNC -7.94mm- 10.3x4.76 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 13.49 mm    Collar Height (D): 5.56 mm   
Part Number: NT079C-THC-S3 Thumb Nuts - 5/16-18 UNC - 7.94mm - 10.3x4.76 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$34.77 AUD
$34.77 AUD
Each
View the product page first if you are unsure.
Thread Size
3/8-16 UNC (9.53mm)
Overall Length (C)
11.9
mm

(0.469 in.)
Head Width (B)
5.56
mm

(0.219 in.)
Head Diameter (A)
19.05
mm
Thumb Nuts - 3/8-16 UNC -9.53mm- 11.9x5.56 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 15.88 mm    Collar Height (D): 6.35 mm   
Part Number: NT095C-THC-S3 Thumb Nuts - 3/8-16 UNC - 9.53mm - 11.9x5.56 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$39.14 AUD
$39.14 AUD
Each
Thread Size
3/8-16 UNC (9.53mm)
Overall Length (C)
11.9
mm

(0.469 in.)
Head Width (B)
5.56
mm

(0.219 in.)
Head Diameter (A)
19.05
mm
Thumb Nuts - 3/8-16 UNC -9.53mm- 11.9x5.56 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Material: Stainless Steel 303 (Similar to A2, 304, 18-8)    Collar Diameter (E): 15.88 mm    Collar Height (D): 6.35 mm   
Part Number: NT095C-THC-S3 Thumb Nuts - 3/8-16 UNC - 9.53mm - 11.9x5.56 mm - Stainless Steel 303 Similar to A2, 304, 18-8
Out of Stock | Backorder Now | Orders can be expected around Thu, Jun 19, 2025
$39.14 AUD
$39.14 AUD
Each
View the product page first if you are unsure.