Product Description
3/8" UNC A2 Stainless Steel Socket Cap Bolts with Shank
These 3/8" UNC socket cap bolts are manufactured from corrosion-resistant A2 stainless steel and feature a partially threaded shank. The cylindrical head and internal hexagon drive provide a strong, compact fastening solution for engineering, machinery, automotive, maintenance and general assembly applications.
The bolts have a 3/8"-16 UNC thread, meaning the thread diameter is 3/8" and there are 16 threads per inch. Their principal inch-series dimensions correspond to ASME B18.3 hexagon socket head cap screw requirements.
A 5/16" AF hexagon key is required for installation. This is approximately 7.94mm, so an 8mm key may sometimes appear to fit but should not be specified as the correct drive size.
Key Features
- 3/8" nominal thread diameter
- UNC unified coarse thread
- 16 threads per inch
- A2 stainless steel construction
- Good resistance to corrosion and moisture
- Part-threaded design with an unthreaded shank
- Cylindrical socket cap head
- 5/16" AF internal hexagon drive
- ASME B18.3 dimensional pattern
- Available in lengths from 1 3/4" to 3 1/2"
- Multiple pack quantities available
Product Specifications
- Thread size: 3/8"-16 UNC
- Threads per inch: 16 TPI
- Material: A2 stainless steel
- Head style: Cylindrical socket cap
- Drive type: Internal hexagon
- Hex key size: 5/16" AF
- Head diameter: 0.550–0.562"
- Head height: 0.368–0.375"
- Minimum socket engagement: 0.182"
- Thread coverage: Part threaded with shank
- Dimensional standard: ASME B18.3
- British thread standard: BS 1580-1
Please note: The thread length is a minimum standard value. The actual thread and plain shank lengths may vary slightly according to the manufacturer or production batch. Please contact us before ordering if either dimension is critical.
Related Products and Information
- Browse all socket cap screws
- UNC, UNF and metric thread data guide
- A2 versus A4 stainless steel guide
- M8 A2 stainless socket cap bolts with shank
| A | B | C | D | E | F | G |
| 3/8" | 2" | 1.33 | 0.54 | 0.35 | 8mm | 16 |
| 3/8" | 3" | 1.54 | 0.54 | 0.35 | 8mm | 16 |
| 3/8" | 1 3/4" | 1.35 | 0.54 | 0.35 | 8mm | 16 |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.
