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ANSI B16.47 Series A Class 300 Flanges

SERIES A 300 BLIND FLANGE

SERIES A 300 WELD NECK FLANGE

(Click any image above to enlarge it and lock it in place, then scroll to the bottom table for dimensions)
ThicknessDrillingWeight
Nom SizeODWeld NeckBlindOD of  RFDia at BaseBoreLTHDia BevelBolt CircleBolt LengthHole Dia # of HolesWeld NeckBlind
OCCRXBYA(1)(2)
2638.253.073.2529.528.38flanges, flange, industrial flanges, industrial flange, industrial pipe flanges, industrial fittings, industrial pipe, industrial carbon steel, industrial blind, industrial blinds, industrial, industrial waterworks, industrial stainless steel, industrial steel, industrial weld, industrial forgings, industrial orifice, industrial slip, industrial steel flange, industrial steel flanges, industrial titanium flange, industrial titanium flanges7.192634.510.751.75286051078
2840.753.323.531.530.57.69283711.251.75287451315
30433.573.6933.7532.568.193039.25121.88288701543
3245.253.823.883634.698.693241.512.522810051795
3447.53.944.073836.889.073443.51322811452068
36504.074.3240.25399.44364613.52.123212752436
38464.194.1940.539.127.06384312.51.62326952001
4048.754.444.4442.7541.257.564045.513.251.75328402380
4250.754.634.6344.7543.257.824247.513.751.75329502688
4453.254.824.824745.258.064449.7514.251.883210553079
4655.75554947.388.4446521522812353499
4857.755.195.1951.2549.388.75485415.2523213803896
5060.255.445.4453.551.389.075056.25162.123215304442
5262.255.635.6355.553.389.325258.2516.52.123216604906
5465.255.945.9457.7555.59.88546117.52.382820505684
5667.256659.7557.6210.19566317.752.382821556098
5869.256.196.196259.6210.445865182.383222706669
6071.256.386.386461.6210.69606718.52.383224707274

Dimensions are in inches. Weights are in pounds.

(1)- Bolt lenghts are calculated based on bolting one WN to one Blind.
(2)- Bolt diameter should be 1/8″ less than the bolt hole diameter

Note:
Larger sizes as well as intermediate sizes can be furnished.
ANSI B16.47 Series A Class 300 Flange PDF (for printing).