The P1008 Unistrut channel nut is a crucial component in Unistrut systems, engineered for robust performance and secure connections. Manufactured from high-quality mild steel cold rolled coil, the P1008 undergoes a precise case hardening process after stamping and machining. This hardening treatment ensures a positive and reliable bite into the inturned edge of the Unistrut channel, providing exceptional holding power. The screws used with P1008 channel nuts conform to SAE J429 GR 2 standards, exceeding ASTM A307 requirements, guaranteeing a Proof Load of 55KSI and a Tensile Load of 74 KSI.
Material Specifications of P1008 Channel Nuts
The P1008 Unistrut channel nut is constructed with specific steel grades depending on the bolt size it accommodates, ensuring optimal strength and compatibility. The following table outlines the ASTM standards for the steel used in P1008 channel nuts based on bolt size:
| Bolt Size | Channel Nut ASTM Standard |
|---|---|
| 1/4″ & 5/16″ | A1011 SS GR33 |
| 3/8″, 7/16″ & 1/2″ | A576 GR1015 Modified |
| 5/8″ & 3/4″ | A36 or A675 GR60 |
| 7/8″ | A36 |
This variety in steel grades ensures that the P1008 channel nut maintains its structural integrity and performance across different load requirements and applications within Unistrut systems.
Finishes Available for P1008 Channel Nuts
To cater to diverse environmental conditions and application needs, the P1008 Unistrut channel nut is available in several protective finishes:
- Electro-galvanized (EG): Conforming to ASTM B633 type III SC1, this finish provides a standard level of corrosion protection suitable for indoor and mildly corrosive environments.
- Hot-dipped galvanized (HG): Meeting ASTM A153 standards, hot-dipped galvanization offers a thicker, more robust zinc coating, ideal for outdoor and harsh environments requiring superior rust resistance.
- Plain (PL): Unfinished steel, suitable for applications where additional finishing is applied post-installation or where corrosion resistance is not a primary concern.
- Unistrut Defender™ (DF): Conforming to ASTM A1059, Unistrut Defender™ finish provides an advanced, proprietary coating system offering exceptional corrosion protection, exceeding the performance of standard galvanized finishes.
While Perma Green finish may be available, it is important to note that this is a commercial grade finish and is susceptible to scuffs and scratches. For applications demanding a flawless aesthetic, touch-up paint is recommended. Hardware components used with P1008 channel nuts, such as hex nuts, bolts, and washers, typically come with an Electro-Galvanized (EG) finish as per ASTM B633 Type III SC1, unless specified otherwise. Stainless steel options are also available for enhanced corrosion resistance; consult the factory for ordering information on stainless steel P1008 channel nuts and related hardware.
Threads and Design Bolt Torque for P1008
P1008 Unistrut channel nuts and their corresponding bolts are manufactured with Unified Screw Threads adhering to ANSI B1.1, coarse series (UNC) class 2 standards. This ensures interchangeability and reliable thread engagement within Unistrut assemblies.
Proper bolt torque is critical for the performance and safety of Unistrut systems. The following table provides recommended and maximum torque values for different bolt sizes used with P1008 channel nuts:
| Bolt Size | 1/4″-20 | 5/16″-18 | 3/8″-16 | 1/2″-13 | 5/8″-11 | 3/4″-10 |
|---|---|---|---|---|---|---|
| Rec. Torque Ft/Lbs (N•m) | 6 (8) | 11 (15) | 19 (26) | 50 (68) | 100 (136) | 125 (170) |
| Max Torque Ft/Lbs (N•m) | 7 (9) | 15 (20) | 25 (34) | 70 (95) | 125 (170) | 135 (183) |
Adhering to these torque specifications ensures optimal clamping force and prevents bolt failure or damage to the Unistrut channel.
Dimensions and Metric Availability
Dimensions for P1008 channel nuts are typically provided in imperial units (inches). Metric dimensions are often included in parentheses or as explicitly noted. Unless otherwise specified, metric dimensions are in millimeters and rounded to one decimal place. For projects requiring metric standard components, many Unistrut nuts, bolts, and hardware items, including variations of the P1008 channel nut, are available in standard metric dimensions. Consult the factory for specific dimensions and ordering information for metric P1008 channel nuts to ensure compatibility with your project requirements.
