Thread Size |
N/A .250-20 (1/4-20) |
Type |
N/A Smooth Cap - PF12MF |
Thread Code |
N/A 0420 |
Screw Length Code |
N/A 2 |
A Max. |
N/A
.072 in
 |
Min. Sheet Thickness |
N/A .060 in |
Hole Size in Sheet + 0.005 - 0.000 |
N/A .323 in |
C Max. |
N/A .322 in |
E ± .010 |
N/A .575 in |
G ± .025 |
N/A .410 in |
P ± .025 |
N/A .084 in |
T1 Nom. |
N/A .530 in |
T2 Nom. |
N/A .790 in |
Driver Size |
N/A
Slotted/#3 Phillips
 |
| Thread Specification1 | N/A ANSI B1.1, 2A |
Material Knob |
N/A Aluminum |
Material Retainer |
N/A Aluminum |
Material Screw |
N/A Heat-Treated Carbon Steel |
Material Spring |
N/A 300 Series Stainless Steel |
Finish Knob |
N/A Natural Finish |
Finish Retainer |
N/A Natural finish |
Finish Screw |
N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless |
Finish Spring |
N/A Natural Finish |
| Optional Finish2 |
N/A
Knob (aluminum) – Black Anodize Screw (steel and stainless) – Black Nitride |
CAD View |
N/A Fastened |
CAD Supplier |
N/A PennEngineering® (PEM®) |
- 1 As with all external plated threads, Class 2A/6g, the maximum major and pitch, after plating, may equal basic sizes and be gauged to Class 3A/4h, per ANSI B1.1, Section 8, Table 3A and ANSI B1.13M, Section 8, Paragraph 8.2
- 2 “BL” suffix will be added to part number to designate DuraBlack™ finish.
