Collection: Screws - Thumb

Screws (With Images)

Thumb

269 Products in this selection

This is a combined category of products from multiple levels.
Use the filters in the table below, or the category tree above to refine the selection. To order any item, simply click the part number for a full product page, then add to your cart.

Miniature Bearings Australia (Minibearings)

Additional resources:
Thumb Screws and Nuts PDF Quick Guide
PDF Screws Catalogue
Nuts

A more concise listing may be found on the Smallparts store at Screws - Thumb. Smallparts promote the most popular MBA products.

Thread Size (A)	Thread Length (B)	Overall Length (D)	Head Diameter (E)	Head Height (D)
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 63.50 mm _{(2.5 in.)}	Overall Length (D) 87.31 mm _{(3.437 in.)}	Head Diameter (E) 33.34 mm
Material: Malleable Iron Finish: Tumbled Category: Screws - Thumb - Flat Key Head
Part Number: THS127C-064-F-MI Thumb Screws - 1/2-13 UNC - 12.7mm - 63.5x87.31 mm - Malleable Iron Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 15, 2025 Regular price $42.59 AUD Regular price Sale price $42.59 AUD Unit price per Each
Thread Size (A)	Thread Length (B)	Overall Length (D)	Indicative Image
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 63.50 mm _{(2.5 in.)}	Overall Length (D) 87.31 mm _{(3.437 in.)}
Material: Malleable Iron Head Diameter (E): 33.34 mm Finish: Tumbled Category: Screws - Thumb - Flat Key Head
Part Number: THS127C-064-F-MI Thumb Screws - 1/2-13 UNC - 12.7mm - 63.5x87.31 mm - Malleable Iron Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 15, 2025 Regular price $42.59 AUD Regular price Sale price $42.59 AUD Unit price per Each View the product page first if you are unsure.
THS127C-064-F-MI --- Thumb Screws - 1/2-13 UNC - 12.7mm - 63.5x87.31 mm - Malleable Iron THS127C-064-F-MI --- Thumb Screws - 1/2-13 UNC - 12.7mm - 63.5x87.31 mm - Malleable Iron Regular price $42.59 AUD Regular price Sale price $42.59 AUD Unit price per Out of stock! Backorder Now
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 69.85 mm _{(2.75 in.)}		Head Diameter (E) 31.75 mm	Head Height (D) 12.70 mm
Material: Steel Finish: Black Oxide Category: Screws - Thumb - Dog Point
Part Number: THS127C-070-K-CS-DP Thumb Screws - 1/2-13 UNC - 12.7mm - 69.85 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 15, 2025 Regular price $61.68 AUD Regular price Sale price $61.68 AUD Unit price per Each
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 69.85 mm _{(2.75 in.)}
Material: Steel Head Diameter (E): 31.75 mm Head Height (D): 12.70 mm Finish: Black Oxide Category: Screws - Thumb - Dog Point
Part Number: THS127C-070-K-CS-DP Thumb Screws - 1/2-13 UNC - 12.7mm - 69.85 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 15, 2025 Regular price $61.68 AUD Regular price Sale price $61.68 AUD Unit price per Each View the product page first if you are unsure.
THS127C-070-K-CS-DP --- Thumb Screws - 1/2-13 UNC - 12.7mm - 69.85 - Steel THS127C-070-K-CS-DP --- Thumb Screws - 1/2-13 UNC - 12.7mm - 69.85 - Steel Regular price $61.68 AUD Regular price Sale price $61.68 AUD Unit price per Out of stock! Backorder Now
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 76.20 mm _{(3 in.)}	Overall Length (D) 101.60 mm _{(4 in.)}	Head Diameter (E) 57.15 mm	Head Height (D) 25.40 mm
Material: Steel Category: Screws - Thumb - Wing
Part Number: THS127C-076-W-CS Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2x101.6 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 15, 2025 Regular price $28.05 AUD Regular price ~~$33.65 AUD~~ Sale price $28.05 AUD Unit price per Each
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 76.20 mm _{(3 in.)}	Overall Length (D) 101.60 mm _{(4 in.)}
Material: Steel Head Diameter (E): 57.15 mm Head Height (D): 25.40 mm Category: Screws - Thumb - Wing
Part Number: THS127C-076-W-CS Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2x101.6 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 15, 2025 Regular price $28.05 AUD Regular price ~~$33.65 AUD~~ Sale price $28.05 AUD Unit price per Each View the product page first if you are unsure.
THS127C-076-W-CS --- Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2x101.6 mm - Steel Sale THS127C-076-W-CS --- Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2x101.6 mm - Steel Regular price $28.05 AUD Regular price ~~$33.65 AUD~~ Sale price $28.05 AUD Unit price per Out of stock! Backorder Now Sale
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 76.20 mm _{(3 in.)}		Head Diameter (E) 25.40 mm	Head Height (D) 9.53 mm
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80 Category: Screws - Thumb - Flat Tip
Part Number: THS127C-076-K-CS-FT Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2 - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 2 Available Immediately \| Item Discontinued - Up to 2 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $23.23 AUD Regular price ~~$40.57 AUD~~ Sale price $23.23 AUD Unit price per Each
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 76.20 mm _{(3 in.)}
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80 Head Diameter (E): 25.40 mm Head Height (D): 9.53 mm Category: Screws - Thumb - Flat Tip
Part Number: THS127C-076-K-CS-FT Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2 - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 2 Available Immediately \| Item Discontinued - Up to 2 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $23.23 AUD Regular price ~~$40.57 AUD~~ Sale price $23.23 AUD Unit price per Each
THS127C-076-K-CS-FT --- Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2 - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Sale THS127C-076-K-CS-FT --- Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2 - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Regular price $23.23 AUD Regular price ~~$40.57 AUD~~ Sale price $23.23 AUD Unit price per 2 Available Now Sale
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 76.20 mm _{(3 in.)}		Head Diameter (E) 25.40 mm	Head Height (D) 9.53 mm
Material: Steel 12L14 Finish: Black Oxide Category: Screws - Thumb - Flat Tip
Part Number: THS127C-076-K-CB-FT Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2 - Steel 12L14 1 Available Immediately \| Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $16.23 AUD Regular price ~~$28.30 AUD~~ Sale price $16.23 AUD Unit price per Each
Thread Size (A) 1/2-13 UNC (12.7mm)	Thread Length (B) 76.20 mm _{(3 in.)}
Material: Steel 12L14 Head Diameter (E): 25.40 mm Head Height (D): 9.53 mm Finish: Black Oxide Category: Screws - Thumb - Flat Tip
Part Number: THS127C-076-K-CB-FT Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2 - Steel 12L14 1 Available Immediately \| Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity Regular price $16.23 AUD Regular price ~~$28.30 AUD~~ Sale price $16.23 AUD Unit price per Each
THS127C-076-K-CB-FT --- Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2 - Steel 12L14 Sale THS127C-076-K-CB-FT --- Thumb Screws - 1/2-13 UNC - 12.7mm - 76.2 - Steel 12L14 Regular price $16.23 AUD Regular price ~~$28.30 AUD~~ Sale price $16.23 AUD Unit price per 1 Available Now Sale