Description
Overview
DIN7 specifies the dimensional requirements for parallel pins, ensuring reliable interchangeability and engineering performance.
This selected size is specified with diameter 5/16 in, length 1/2 in (12.7 mm), pitch 18 TPI.
Sold per piece. Screwman code CCBSW51612H.
Material, Grade & Strength
Select the material and grade according to the intended load, environment and application.
Finish & Corrosion Protection
Plain finish is intended for protected indoor applications.
Typical Uses
Used in machinery, maintenance, manufacturing, agriculture, mining and general engineering applications.
Technical Tips
- Select the correct size and material for the application.
- Inspect components before installation.
- Follow recognised engineering practices and manufacturer recommendations.
Data Sheet
Technical Drawing – ASME B18.3
Dimension symbols refer to the table below. Drawing source: Fabory data sheet 07470.
Dimensions – ASME B18.3 5/16 BSW x 1/2 in
| Standard | ASME B18.3 |
|---|---|
| Product | Hexagon socket flat countersunk screw, inch series |
| Thread | 5/16-18 BSW |
| Length (l) | 1/2 in (12.7 mm) |
| Head diameter (dk, approx.) | 5/8 in (15.9 mm) |
| Head angle | 82° |
| Hex key (s) | 10/47 in (5.4 mm) |
| Weight (calculated) | 6.67 kg per 1 000 pieces |
Material, Grade & Strength
| Material | High tensile alloy steel, property class 10.9 |
|---|---|
| Property class | 10.9 |
| Tensile strength Rm (min) | 1040 MPa |
| Yield / 0.2% proof Rp0.2 (min) | 940 MPa |
| Proof load stress | 830 MPa |
| Hardness | 320-380 HV |
| Elongation after fracture (min) | 9 % |
| Matching nut | property class 10 (ISO 898-2) |
Finish & Corrosion Protection
Plain / self colour: No applied coating. Stainless, brass and nylon parts are supplied plain; plain steel parts need oil, paint or protected environments.
Nominal dimensions per ASME B18.3. Weights are calculated from nominal dimensions and are a guide only (±10%). Values for fit and strength should be confirmed against the standard for critical applications.
Specifications
| Measurement Type | Imperial |
|---|---|
| Thread Pitch | 18 TPI |
| Thread Style | Fully Thread |
| Drive Type | Hex |
| Head Style | Round |
| Diameter | 5/16 in |
| Length | 1/2 in (12.7 mm) |
| Material | Hi - Tensile Steel |
| Finish | Plain |
| Grade | Grade 10.9 |
| Standards Met | ASME B18.3 |
| Package Quantity | 1 |
| Package Type | Box |