1/2 SS Countersunk Machine Screw (INCH)
1/2" stainless steel countersunk machine screws per ASME B18.6.3 in A2-70 grade. 82° flat head with cross-recessed drive for flush mounting in inch-specification assemblies at 1/2-inch diameter.
Specification
#
Standard
ANSI/ASME B18.6.3
Thread
Coarse (standard)
Material
Stainless Steel 304 (A2)
Grade
A2-70
Stock
In stock (304). Grade 316 available against bulk order
Dimension
#
Size (inch)
Thread Dia (min-max inch)
Pitch (TPI)
Length (inch)
Thread Length (inch)
#6
0.138-0.1380
32
1/4-1 1/2
Full thread
#10
0.190-0.1900
24
3/8-2
Full thread
1/4"
0.250-0.2500
20
1/2-3
Full thread
5/16"
0.3125-0.3125
18
5/8-3
Full thread
3/8"
0.375-0.3750
16
3/4-4
Full thread
- All dimensions in inches, tolerance +/- 0.001 inch. Additional dimensions available on request.
Benefits
#
Inch-series stainless steel countersunk machine screws at 1/2-inch provide flush fastening in US-specification equipment requiring corrosion resistance. The 82° conical head seats flush in standard inch countersinks. A2 (304) stainless steel eliminates coating degradation in humid and atmospheric environments. Cross-recessed drive allows controlled torque application. This diameter serves legacy US-specification machinery, marine hardware, and aerospace interior panels.
Common Applications
#
Common applications for 1/2" inch-series SS countersunk machine screws include:
- Small US-spec instrument panels
- Legacy equipment flush covers
- Marine interior fittings (inch)
- Aerospace interior panels (inch)
- Small electrical enclosure covers
Read Me
| Standard | ANSI/ASME B18.6.3 |
| Thread | Coarse (standard) |
| Material | Stainless Steel 304 (A2) |
| Grade | A2-70 |
| Stock | In stock (304). Grade 316 available against bulk order |
| Size (inch) | Thread Dia (min-max inch) | Pitch (TPI) | Length (inch) | Thread Length (inch) |
|---|---|---|---|---|
| #6 | 0.138-0.1380 | 32 | 1/4-1 1/2 | Full thread |
| #10 | 0.190-0.1900 | 24 | 3/8-2 | Full thread |
| 1/4" | 0.250-0.2500 | 20 | 1/2-3 | Full thread |
| 5/16" | 0.3125-0.3125 | 18 | 5/8-3 | Full thread |
| 3/8" | 0.375-0.3750 | 16 | 3/4-4 | Full thread |
