These Class 300 Mild Steel Flat-Face Slip-On Flanges are fully machined and made of A105 Mild Steel. The material meets ASTM A105 requirements. Dimensions and Tolerances per ASME B16.5. Flanges are painted black for corrosion resistance. Bolt pattern per ANSI Class 300. We stock ASME B16.5 flanges in both domestic (AIS) and import options. Our machine shop can also modify ANSI/ASME flanges to meet your project requirements.
Downloads:
| API Part Number | Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK 1 | THK 2 | H.D. | Weight Lbs |
| FFS0050-30 | 0.5 | 3.75 | 0.88 | 2.63 | 0.750 | 4 | 0.563 | 0.880 | 1.500 | 2.0 |
| FFS0075-30 | 0.75 | 4.63 | 1.09 | 3.25 | 0.750 | 4 | 0.625 | 1.000 | 1.875 | 2.4 |
| FFS0100-30 | 1 | 4.88 | 1.36 | 3.50 | 0.750 | 4 | 0.688 | 1.063 | 2.125 | 3.0 |
| FFS0125-30 | 1.25 | 5.25 | 1.70 | 3.88 | 0.750 | 4 | 0.750 | 1.063 | 2.500 | 4.5 |
| FFS0150-30 | 1.5 | 6.13 | 1.95 | 4.50 | 0.875 | 4 | 0.813 | 1.188 | 2.750 | 6.5 |
| FFS0200-30 | 2 | 6.50 | 2.44 | 5.00 | 0.750 | 8 | 0.875 | 1.313 | 3.313 | 7.0 |
| FFS0250-30 | 2.5 | 7.50 | 2.94 | 5.88 | 0.875 | 8 | 1.000 | 1.500 | 3.938 | 10.0 |
| FFS0300-30 | 3 | 8.25 | 3.57 | 6.63 | 0.875 | 8 | 1.125 | 1.688 | 4.625 | 13.0 |
| FFS0350-30 | 3.5 | 9.00 | 3.57 | 7.25 | 0.875 | 8 | 1.188 | 1.750 | 5.250 | 17.0 |
| FFS0400-30 | 4 | 10.00 | 4.57 | 7.88 | 0.875 | 8 | 1.250 | 1.875 | 5.750 | 23.5 |
| FFS0500-30 | 5 | 11.00 | 5.66 | 9.25 | 0.875 | 8 | 1.375 | 2.000 | 7.000 | 29.0 |
| FFS0600-30 | 6 | 12.50 | 6.72 | 10.63 | 0.875 | 12 | 1.438 | 2.063 | 8.125 | 36.0 |
| FFS0800-30 | 8 | 15.00 | 8.72 | 13.00 | 1.000 | 12 | 1.625 | 2.438 | 10.250 | 56.0 |
| FFS1000-30 | 10 | 17.50 | 10.88 | 15.25 | 1.125 | 16 | 1.875 | 2.625 | 12.625 | 77.0 |
| FFS1200-30 | 12 | 20.50 | 12.88 | 17.75 | 1.250 | 16 | 2.000 | 2.875 | 14.750 | 113.0 |
| FFS1400-30 | 14 | 23.00 | 14.14 | 20.25 | 1.250 | 20 | 2.125 | 3.000 | 16.750 | 159.0 |
| FFS1600-30 | 16 | 25.50 | 16.16 | 22.50 | 1.375 | 20 | 2.250 | 3.250 | 19.000 | 210.0 |
| FFS1800-30 | 18 | 28.00 | 18.18 | 24.75 | 1.375 | 24 | 2.375 | 3.500 | 21.000 | 253.0 |
| FFS2000-30 | 20 | 30.50 | 20.20 | 27.00 | 1.375 | 24 | 2.500 | 3.750 | 23.125 | 307.0 |
| FFS2400-30 | 24 | 36.00 | 24.25 | 32.00 | 1.625 | 24 | 2.750 | 4.188 | 27.625 | 490.0 |
