3/4 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8)
3/4 inch (DN 20) to ASME B16.48: Outside dia 54 mm; Inside dia 21 mm; Centre line 70 mm; Thickness 3 mm; Web width 38 mm.
Key to dimensions
- A
- Outside diameter of blank and ring
- B
- Inside diameter of the ring (spacer) end
- C
- Centre line distance between blank and ring
- t
- Thickness
- W
- Web (tie bar) width
3/4 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8) — all dimensions
Spectacle blind, RF — Class 150 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Outside dia — A | 54 mm | 2.13 in |
| Inside dia — B | 21 mm | 0.827 in |
| Centre line — C | 70 mm | 2.76 in |
| Thickness — t | 3 mm | 0.118 in |
| Web width — W | 38 mm | 1.50 in |
Spectacle blind, RF — Class 300 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Outside dia — A | 64 mm | 2.52 in |
| Inside dia — B | 21 mm | 0.827 in |
| Centre line — C | 80 mm | 3.15 in |
| Thickness — t | 6.4 mm | 0.252 in |
| Web width — W | 38 mm | 1.50 in |
Spectacle blind, RF — Class 600 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Outside dia — A | 64 mm | 2.52 in |
| Inside dia — B | 21 mm | 0.827 in |
| Centre line — C | 80 mm | 3.15 in |
| Thickness — t | 6.4 mm | 0.252 in |
| Web width — W | 38 mm | 1.50 in |
Values are nominal, from ASME B16.48 Spectacle Blind Dimensions (Figure-8). Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
Find another size or standard
Pick a product, standard and size — or just type — to see every dimension and download a watermarked PDF for that one size.
FAQ
3/4 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8): common questions
What are the 3/4 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8)?
3/4 inch (DN 20) to ASME B16.48: Outside dia 54 mm; Inside dia 21 mm; Centre line 70 mm; Thickness 3 mm; Web width 38 mm.
Does Teshi Group supply 3/4 inch products?
Yes. Teshi Group stocks and supplies products to ASME B16.48 from India, with mill test certificates.
Can I download the 3/4 inch dimensions as a PDF?
Yes. Use “Download PDF for this size” on this page to get a single-size, print-ready PDF with the drawing and every tabulated dimension, or download the full ASME B16.48 Spectacle Blind Dimensions (Figure-8) chart.
Need 3/4 inch products?
Teshi Group stocks and supplies them in India — send your size, rating and material and get a quote in 24–48 hours.
Ready to build to spec?
Share your drawing, bill of materials or technical requirements with the Teshi team.