Product Description
3/8″-16 UNC Zinc Plated Steel Countersunk Socket Screws
3/8″-16 UNC countersunk socket screws manufactured from high tensile alloy steel with a zinc plated finish. The flat countersunk head seats flush in a matching 82° countersink, while the internal hexagon socket accepts a 7/32″ Allen key.
These fully threaded imperial screws are suitable for compatible UNC tapped holes or matching nuts. Choose from six lengths for machinery, equipment assembly, repairs and maintenance.
Specifications
| Thread size | 3/8″-16 UNC |
|---|---|
| Nominal thread diameter | 3/8″ / 9.525mm |
| Threads per inch | 16 TPI |
| Thread series | Unified National Coarse, right-hand |
| Material | High tensile alloy steel grade 8 |
| Mechanical specification | ASTM F835 |
| Finish | Zinc plated |
| Head style | Flat countersunk socket head |
| Head angle | 82° included angle |
| Drive size | 7/32″ hexagon socket / Allen key |
| Thread coverage | Fully threaded |
| Length measurement | Overall length, including the countersunk head |
Available Lengths
- 3/8″-16 UNC × 1/2″
- 3/8″-16 UNC × 5/8″
- 3/8″-16 UNC × 1″
- 3/8″-16 UNC × 1 1/2″
- 3/8″-16 UNC × 1 3/4″
- 3/8″-16 UNC × 2″
Key Features
- High tensile alloy steel construction.
- Zinc plated finish provides corrosion protection.
- 82° countersunk head for flush seating in a matching countersink.
- Internal hexagon drive accepts a 7/32″ Allen key.
- Fully threaded for use with compatible tapped holes or nuts.
Selection and Installation
Check that the mating thread is 3/8″-16 UNC. These screws are not interchangeable with 3/8″-24 UNF or metric threads.
Use a matching 82° countersink and measure the required screw length including the head. Seat the correct Allen key fully before tightening and use a torque appropriate to the joint and mating material.
Pack Sizes
Available in quantities of 1, 5, 10, 20, 50, 100, 250, 500 or 1000 screws. Select the required length and pack size before ordering.
Standards
- ASME B18.3 – imperial socket screw dimensions.
- ASTM F835 – alloy steel socket flat countersunk head cap screw mechanical specification.
- ASME B1.1 – Unified inch screw threads.
