https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-8-bolt-star-asme-pcc-1.svg 8-Bolt Star Pattern Fig. 8-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 5 → 3 → 7 → 2 → 6 → 4 → 8. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/4-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-4-bolt-star-asme-pcc-1.svg 4-Bolt Cross Pattern Fig. 4-bolt cross pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 3 → 2 → 4. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/4-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-4-bolt-circular-asme-pcc-1.svg 4-Bolt Circular Pattern Fig. 4-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/8-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-8-bolt-star-asme-pcc-1.svg 8-Bolt Star Pattern Fig. 8-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 5 → 3 → 7 → 2 → 6 → 4 → 8. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/8-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-8-bolt-circular-asme-pcc-1.svg 8-Bolt Circular Pattern Fig. 8-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/12-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-12-bolt-star-asme-pcc-1.svg 12-Bolt Star Pattern Fig. 12-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 7 → 4 → 10 → 2 → 8 → 5 → 11 → 3 → 9 → 6 → 12. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/12-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-12-bolt-circular-asme-pcc-1.svg 12-Bolt Circular Pattern Fig. 12-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/16-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-16-bolt-star-asme-pcc-1.svg 16-Bolt Star Pattern Fig. 16-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 9 → 5 → 13 → 3 → 11 → 7 → 15 → 2 → 10 → 6 → 14 → 4 → 12 → 8 → 16. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/16-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-16-bolt-circular-asme-pcc-1.svg 16-Bolt Circular Pattern Fig. 16-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/20-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-20-bolt-star-asme-pcc-1.svg 20-Bolt Star Pattern Fig. 20-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 11 → 6 → 16 → 2 → 12 → 7 → 17 → 3 → 13 → 8 → 18 → 4 → 14 → 9 → 19 → 5 → 15 → 10 → 20. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/20-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-20-bolt-circular-asme-pcc-1.svg 20-Bolt Circular Pattern Fig. 20-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16 → 17 → 18 → 19 → 20. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/24-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-24-bolt-star-asme-pcc-1.svg 24-Bolt Star Pattern Fig. 24-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 13 → 7 → 19 → 4 → 16 → 10 → 22 → 2 → 14 → 8 → 20 → 5 → 17 → 11 → 23 → 3 → 15 → 9 → 21 → 6 → 18 → 12 → 24. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/24-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-24-bolt-circular-asme-pcc-1.svg 24-Bolt Circular Pattern Fig. 24-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16 → 17 → 18 → 19 → 20 → 21 → 22 → 23 → 24. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/32-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-32-bolt-star-asme-pcc-1.svg 32-Bolt Star Pattern Fig. 32-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 17 → 9 → 25 → 5 → 21 → 13 → 29 → 3 → 19 → 11 → 27 → 7 → 23 → 15 → 31 → 2 → 18 → 10 → 26 → 6 → 22 → 14 → 30 → 4 → 20 → 12 → 28 → 8 → 24 → 16 → 32. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/32-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-32-bolt-circular-asme-pcc-1.svg 32-Bolt Circular Pattern Fig. 32-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16 → 17 → 18 → 19 → 20 → 21 → 22 → 23 → 24 → 25 → 26 → 27 → 28 → 29 → 30 → 31 → 32. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/36-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-36-bolt-star-asme-pcc-1.svg 36-Bolt Star Pattern Fig. 36-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 19 → 10 → 28 → 2 → 20 → 11 → 29 → 3 → 21 → 12 → 30 → 4 → 22 → 13 → 31 → 5 → 23 → 14 → 32 → 6 → 24 → 15 → 33 → 7 → 25 → 16 → 34 → 8 → 26 → 17 → 35 → 9 → 27 → 18 → 36. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/36-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-36-bolt-circular-asme-pcc-1.svg 36-Bolt Circular Pattern Fig. 36-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16 → 17 → 18 → 19 → 20 → 21 → 22 → 23 → 24 → 25 → 26 → 27 → 28 → 29 → 30 → 31 → 32 → 33 → 34 → 35 → 36. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/40-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-40-bolt-star-asme-pcc-1.svg 40-Bolt Star Pattern Fig. 40-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 21 → 11 → 31 → 6 → 26 → 16 → 36 → 2 → 22 → 12 → 32 → 7 → 27 → 17 → 37 → 3 → 23 → 13 → 33 → 8 → 28 → 18 → 38 → 4 → 24 → 14 → 34 → 9 → 29 → 19 → 39 → 5 → 25 → 15 → 35 → 10 → 30 → 20 → 40. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/40-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-40-bolt-circular-asme-pcc-1.svg 40-Bolt Circular Pattern Fig. 40-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16 → 17 → 18 → 19 → 20 → 21 → 22 → 23 → 24 → 25 → 26 → 27 → 28 → 29 → 30 → 31 → 32 → 33 → 34 → 35 → 36 → 37 → 38 → 39 → 40. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/48-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-48-bolt-star-asme-pcc-1.svg 48-Bolt Star Pattern Fig. 48-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 25 → 13 → 37 → 7 → 31 → 19 → 43 → 4 → 28 → 16 → 40 → 10 → 34 → 22 → 46 → 2 → 26 → 14 → 38 → 8 → 32 → 20 → 44 → 5 → 29 → 17 → 41 → 11 → 35 → 23 → 47 → 3 → 27 → 15 → 39 → 9 → 33 → 21 → 45 → 6 → 30 → 18 → 42 → 12 → 36 → 24 → 48. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/48-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-48-bolt-circular-asme-pcc-1.svg 48-Bolt Circular Pattern Fig. 48-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16 → 17 → 18 → 19 → 20 → 21 → 22 → 23 → 24 → 25 → 26 → 27 → 28 → 29 → 30 → 31 → 32 → 33 → 34 → 35 → 36 → 37 → 38 → 39 → 40 → 41 → 42 → 43 → 44 → 45 → 46 → 47 → 48. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/56-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-56-bolt-star-asme-pcc-1.svg 56-Bolt Star Pattern Fig. 56-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 29 → 15 → 43 → 8 → 36 → 22 → 50 → 2 → 30 → 16 → 44 → 9 → 37 → 23 → 51 → 3 → 31 → 17 → 45 → 10 → 38 → 24 → 52 → 4 → 32 → 18 → 46 → 11 → 39 → 25 → 53 → 5 → 33 → 19 → 47 → 12 → 40 → 26 → 54 → 6 → 34 → 20 → 48 → 13 → 41 → 27 → 55 → 7 → 35 → 21 → 49 → 14 → 42 → 28 → 56. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/56-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-56-bolt-circular-asme-pcc-1.svg 56-Bolt Circular Pattern Fig. 56-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16 → 17 → 18 → 19 → 20 → 21 → 22 → 23 → 24 → 25 → 26 → 27 → 28 → 29 → 30 → 31 → 32 → 33 → 34 → 35 → 36 → 37 → 38 → 39 → 40 → 41 → 42 → 43 → 44 → 45 → 46 → 47 → 48 → 49 → 50 → 51 → 52 → 53 → 54 → 55 → 56. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/64-bolt-star https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-64-bolt-star-asme-pcc-1.svg 64-Bolt Star Pattern Fig. 64-bolt star pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 33 → 17 → 49 → 9 → 41 → 25 → 57 → 5 → 37 → 21 → 53 → 13 → 45 → 29 → 61 → 3 → 35 → 19 → 51 → 11 → 43 → 27 → 59 → 7 → 39 → 23 → 55 → 15 → 47 → 31 → 63 → 2 → 34 → 18 → 50 → 10 → 42 → 26 → 58 → 6 → 38 → 22 → 54 → 14 → 46 → 30 → 62 → 4 → 36 → 20 → 52 → 12 → 44 → 28 → 60 → 8 → 40 → 24 → 56 → 16 → 48 → 32 → 64. https://www.fieldengineerskit.com/calculator/flange-bolt-tightening-sequence/64-bolt-circular https://www.fieldengineerskit.com/images/diagrams/bolt-sequence/flange-bolt-tightening-sequence-64-bolt-circular-asme-pcc-1.svg 64-Bolt Circular Pattern Fig. 64-bolt circular pattern tightening sequence (ASME PCC-1 screening). Order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16 → 17 → 18 → 19 → 20 → 21 → 22 → 23 → 24 → 25 → 26 → 27 → 28 → 29 → 30 → 31 → 32 → 33 → 34 → 35 → 36 → 37 → 38 → 39 → 40 → 41 → 42 → 43 → 44 → 45 → 46 → 47 → 48 → 49 → 50 → 51 → 52 → 53 → 54 → 55 → 56 → 57 → 58 → 59 → 60 → 61 → 62 → 63 → 64. https://www.fieldengineerskit.com/calculator/blind-flange-thickness https://www.fieldengineerskit.com/images/diagrams/blind-flange/blind-flange-thickness-chart-ambient-class-rating-imperial-asme.svg Blind Flange Thickness Chart — ASME B16.5 Ambient Class (imperial) Fig. ASME B16.5 ambient class blind flange thickness chart (inches · ambient −29…100 °F · c = 0.125 in). Screening plate sizes from UG-34 / B31.3 style formula — not a purchase certificate. https://www.fieldengineerskit.com/images/diagrams/blind-flange/blind-flange-thickness-chart-ambient-class-rating-metric-asme.svg Blind Flange Thickness Chart — ASME B16.5 Ambient Class (metric) Fig. ASME B16.5 ambient class blind flange thickness chart (mm · ambient −29…38 °C · c = 3.0 mm). Screening plate sizes from UG-34 / B31.3 style formula — not a purchase certificate. https://www.fieldengineerskit.com/images/diagrams/blind-flange/blind-flange-thickness-chart-hydrotest-plate-capability-imperial-asme.svg Blind Flange / Test Blind Thickness Chart — Hydrotest Plate Capability (imperial) Fig. Hydrotest / test-blind plate capability chart (max allowable test pressure in psi). Full public matrix — screening only per ASME B31.3 / VIII-1 UG-34 style relation. https://www.fieldengineerskit.com/images/diagrams/blind-flange/blind-flange-thickness-chart-hydrotest-plate-capability-metric-asme.svg Blind Flange / Test Blind Thickness Chart — Hydrotest Plate Capability (metric) Fig. Hydrotest / test-blind plate capability chart (max allowable test pressure in bar). Full public matrix — screening only per ASME B31.3 / VIII-1 UG-34 style relation.