ASME B16.5 Flanges

Bolt and Stud DimensionsASME B16.5150 LB. Flanges (3) 300 LB. Flanges (3) 400 LB. Flanges (4)NominalPipeSizeNo. ofBolts orStudsDia. ofBolts orStudsLengthof BoltsALengthof StudsBNo. ofBolts orStudsDia. ofBolts orStudsLengthof BoltsALengthof StudsBNo. ofBolts orStudsDia. ofBolts orStudsLengthof StudsB1/2 4 0.50 2.00 2.25 4 0.50 2.25 2.50 * .* .*3/4 4 0.50 2.00 2.50 4 0.62 2.50 3.00 * .* .*1 4 0.50 2.25 2.50 4 0.62 2.50 3.00 * .* .*1 1 /4 4 0.50 2.25 2.75 4 0.62 2.75 3.25 * .* .*1 1 /2 4 0.50 2.50 2.75 4 0.75 3.00 3.50 * .* .*2 4 0.62 2.75 3.25 8 0.62 3.00 3.50 * .* .*2 1 /2 4 0.62 3.00 3.50 8 0.75 3.25 4.00 * .* .*3 4 0.62 3.00 3.50 8 0.75 3.50 4.25 * .* .*3 1 /2 8 0.62 3.00 3.50 8 0.75 3.75 4.25 * .* .*4 8 0.62 3.00 3.50 8 0.75 3.75 4.50 8 0.88 5.505 8 0.75 3.25 3.75 8 0.75 4.25 4.75 8 0.88 5.756 8 0.75 3.25 4.00 12 0.75 4.25 4.75 12 0.88 6.008 8 0.75 3.50 4.25 12 0.88 4.75 5.50 12 1.00 6.7510 12 0.88 4.00 4.50 16 1.00 5.50 6.25 16 1.12 7.5012 12 0.88 4.00 4.75 16 1.12 5.75 6.75 16 1.25 8.0014 12 1.00 4.50 5.25 20 1.12 6.25 7.00 20 1.25 8.2516 16 1.00 4.50 5.25 20 1.25 6.50 7.50 20 1.38 8.7518 16 1.12 5.00 5.75 24 1.25 6.75 7.75 24 1.38 9.0020 20 1.12 5.50 6.25 24 1.25 7.25 8.00 24 1.50 9.5024 20 1.25 6.00 6.75 24 1.50 8.00 9.00 24 1.75 10.50NominalPipeSizeNo. ofBolts orStudsDia. ofBolts orStuds600 LB. Flanges (4) No. ofLengthof StudsBBolts orStudsDia. ofBolts orStuds900 LB. Flanges (4) No. ofLengthof StudsBBolts orStudsDia. ofBolts orStuds1500 LB. Flanges (4) No. of2500 LB. Flanges (4)Lengthof StudsBBolts orStudsDia. ofBolts orStudsLengthof StudsB1/2 4 0.50 3.00 † .† .† 4 0.75 4.25 4 0.75 4.753/4 4 0.62 3.50 † .† .† 4 0.75 4.50 4 0.75 5.001 4 0.62 3.50 † .† .† 4 0.88 5.00 4 0.88 5.501 1 /4 4 0.62 3.75 † .† .† 4 0.88 5.00 4 1.00 6.001 1 /2 4 0.75 4.25 † .† .† 4 1.00 5.50 4 1.12 6.752 8 0.62 4.25 † .† .† 8 0.88 5.75 8 1.00 7.002 1 /2 8 0.75 4.75 † .† .† 8 1.00 6.25 8 1.13 7.753 8 0.75 5.00 8 0.88 5.75 8 1.12 7.00 8 1.25 8.753 1 /2 8 0.88 5.50 — .— .— — .— .— — .— .—4 8 0.88 5.75 8 1.12 6.75 8 1.25 7.75 8 1.50 10.005 8 1.00 6.50 8 1.25 7.50 8 1.50 9.75 8 1.75 11.756 12 1.00 6.75 12 1.12 7.50 12 1.38 10.25 8 2.00 13.508 12 1.12 7.50 12 1.38 8.75 12 1.62 11.50 12 2.00 15.0010 16 1.25 8.50 16 1.38 9.25 12 1.88 13.25 12 2.50 19.2512 20 1.25 8.75 20 1.38 10.00 16 2.00 14.75 12 2.75 21.2514 20 1.38 9.25 20 1.50 10.75 16 2.25 16.00 — .— .—16 20 1.50 10.00 20 1.62 11.25 16 2.50 17.50 — .— .—18 20 1.62 10.75 20 1.88 12.75 16 2.75 19.50 — .— .—20 24 1.62 11.25 20 2.00 13.75 16 3.00 21.25 — .— .—24 24 1.88 13.00 20 2.50 17.25 16 3.50 24.25 — .— .—(1) All dimensions in inches.(2) Lengths include allowance for pulling-up.(3) Length based on .06" raised faced Welding Neck, Slip-On,Screwed or Blind Flanges. For lap joint, add the thickness of bothlaps.(4) Length based on 0.25" raised faced Welding Neck, Slip-On,Screwed or Blind Flanges. For lap joint, add the thickness of both lapsand subtract 0.50". For male and female or tongue and groove flangefaces, subtract 0.25".* Same as 600 lb. flanges. † Same as 1500 lb. flanges.Revised 1-99 71