Flat Head Cap Screws

Imperial Socket Flat Head Cap Screws UNC & UNF

High-quality imperial socket flat head cap screws in UNC and UNF for workshops, restorers, motorcyclists, US car owners and service technicians. Socket Flat Head Cap Screws according to American standards ASME B18.3.

Available Grades:

Steel Grade: Diameter #0 - 1/2": minimum HRC 39 (approx. 12.9) | Diameter 5/8" and larger: HRC 37 min.
Stainless Steel Grade: Stainless steel 18-8 equivalent to approximately A2-50

American Standard Specifications:

82° countersunk angle (compared to 90° for metric screws)

Application Advantages:

Fully countersunk for flush surface without protrusion
No injury risk from protruding parts
Ideal for automotive, machinery and furniture applications
Perfect for aerodynamic and aesthetic applications

Perfect for US vehicles, American motorcycles, classic car restoration and US machinery.

Example Picture: Flat Head Socket Cap Screw, approx. DIN 7991, full thread, UNF, Alloy Steel, black oxide

#0 UNF x 1/2" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #0 80-UNFLength: 1/2"

Product number: 7991UNF#0x12

From €0.60

Details

> 500 available

#0 UNF x 1/4" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #0 80-UNFLength: 1/4"

Product number: 7991UNF#0x14

From €0.35

Details

Example Picture: Flat Head Socket Cap Screw, approx. DIN 7991, full thread, UNF, Stainless Steel 18-8 (A2), plain

#0 UNF x 1/4" Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #0 80-UNFLength: 1/4"

Product number: 7991A2UNF#0x14

From €0.35

Details

#0 UNF x 1/8" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #0 80-UNFLength: 1/8"

Product number: 7991UNF#0x18

From €0.35

Details

#0 UNF x 1/8" Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #0 80-UNFLength: 1/8"

Product number: 7991A2UNF#0x18

From €0.35

Details

#0 UNF x 3/16" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #0 80-UNFLength: 3/16"

Product number: 7991UNF#0x316

From €0.35

Details

> 500 available

#0 UNF x 3/16" Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #0 80-UNFLength: 3/16"

Product number: 7991A2UNF#0x316

From €0.35

Details

#0 UNF x 5/16" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #0 80-UNFLength: 5/16"

Product number: 7991UNF#0x516

From €0.35

Details

#1 UNF x 1/4" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #1 72-UNFLength: 1/4"

Product number: 7991UNF#1x14

From €0.35

Details

#1 UNF x 1/4" Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #1 72-UNFLength: 1/4"

Product number: 7991A2UNF#1x14

From €0.35

Details

#1 UNF x 1/8 Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #1 72-UNF

Product number: 7991A2UNF#1x18

From €0.35

Details

Example Picture: Flat Head Socket Cap Screw, approx. DIN 7991, full thread, UNC, Alloy Steel, black oxide

#10 UNC x 1.1/2" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #10 24-UNCLength: 1.1/2"

Product number: 7991UNC#10x112

From €0.35

Details

Example Picture: Flat Head Socket Cap Screw, approx. DIN 7991, full thread, UNC, Stainless Steel 18-8 (A2), plain

#10 UNC x 1.1/2" Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #10 24-UNCLength: 1.1/2"

Product number: 7991A2UNC#10x112

From €0.35

Details

#10 UNC x 1.1/4" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #10 24-UNCLength: 1.1/4"

Product number: 7991UNC#10x114

From €0.35

Details

#10 UNC x 1.1/4" Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #10 24-UNCLength: 1.1/4"

Product number: 7991A2UNC#10x114

From €0.35

Details

#10 UNC x 1.3/4" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #10 24-UNCLength: 1.3/4"

Product number: 7991UNC#10x134

From €0.40

Details

> 500 available

#10 UNC x 1" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #10 24-UNCLength: 1"

Product number: 7991UNC#10x1

From €0.35

Details

> 500 available

Top seller

#10 UNC x 1" Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #10 24-UNCLength: 1"

Product number: 7991A2UNC#10x1

From €0.35

Details

> 500 available

#10 UNC x 1/2" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #10 24-UNCLength: 1/2"

Product number: 7991UNC#10x12

From €0.35

Details

Example Picture: Flat Head Socket Cap Screw, approx. DIN 7991, full thread, UNC, Alloy Steel, zinc plated

#10 UNC x 1/2" Flat Head Socket Cap Screws, Alloy Steel, zinc plated

Flat Head Socket Cap Screws, Alloy Steel, zinc platedThread: #10 24-UNCLength: 1/2"

Product number: 7991ZNUNC#10x12

From €0.35

Details

#10 UNC x 1/2" Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #10 24-UNCLength: 1/2"

Product number: 7991A2UNC#10x12

From €0.35

Details

> 500 available

#10 UNC x 1/4" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #10 24-UNCLength: 1/4"

Product number: 7991UNC#10x14

From €0.35

Details

#10 UNC x 1/4" Flat Head Socket Cap Screws, Stainless Steel 18-8

Flat Head Socket Cap Screws, Stainless Steel 18-8Thread: #10 24-UNCLength: 1/4"

Product number: 7991A2UNC#10x14

From €0.35

Details

#10 UNC x 2.1/2" Flat Head Socket Cap Screws, Alloy Steel, black oxide

Flat Head Socket Cap Screws, Alloy Steel, black oxide Thread: #10 24-UNCLength: 2.1/2"

Product number: 7991UNC#10x212

From €0.80

Details