Counterbore Screws (b18.2.1)

12-point Flange Screws, Counterbore Screws,  Ferry Head Cap Screws or Counterbore Screws, feature a 12 point head and a flanged bearing surface. Usually fully threaded, the 12-point design provides for higher tightening torque, without edge rounding and they are covered under ASME Standard B18.2.1

12 Point Flange Screw (CounterBore) (b18.2.1), showing 200, (click on any line for more information)

Search Results Sponsored by Metric Threaded Products, Inc., your source for 12 Point Flange Screws. For more results, visit   www.metric-threaded.com
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain1/41/4 counterbore # csc55655 b18.2.11
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 15/16-18 x 1 12 pt flange bolts b18.2.19
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 1 1/45/16-18 x 1 1/4 12 pt flange bolts b18.2.1347
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain5/16-24 x 15/16-24 x 1 12 pt flange bolts b18.2.158
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain3/8-16 x 1 3/43/8-16 x 1 3/4 12 pt flange bolts b18.2.12
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain3/8-16 x 4 3/43/8-16 x 4 3/4 12 pt flange bolts b18.2.1104
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain1/2-13 x 1 1/41/2-13 x 1 1/4 12 pt flange bolts b18.2.125
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain1/2-13 x 2 1/21/2-13 x 2 1/2 12 pt flange bolts b18.2.125
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain1/2-20 x 2 1/21/2-20 x 2 1/2 12 pt flange bolts b18.2.165
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B & K FASTPA12 Point Flange Screw (CounterBore)Grade 8Plain9/16-18 x 1 1/29/16-18 x 1 1/2 12 pt flange bolts gr 8 plain b18.2.11
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain5/8-11 x 1 1/25/8-11 x 1 1/2 12 pt flange bolts b18.2.112
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain5/8-11 x 1 3/45/8-11 x 1 3/4 12 pt flange bolts b18.2.144
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain5/8-18 x 25/8-18 x 2 12 pt flange bolts b18.2.117
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain5/8-18 x 2 1/25/8-18 x 2 1/2 12 pt flange bolts b18.2.128
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B & K FASTPA12 Point Flange Screw (CounterBore)SteelPlain7/8-14 x 47/8-14 x 4 12 pt flange bolts b18.2.11
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General FMI12 Point Flange Screw (CounterBore)SteelPlain7/8-9 x 4 1/47/8-9 x 4.25 12-pt ctrb scr q29 b18.2.13,899
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General FMI12 Point Flange Screw (CounterBore)SteelPlain7/8-9 x 2 1/47/8-9 x 2.25 12 pt ctbr scr q-29 b18.2.110,564
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General FMI12 Point Flange Screw (CounterBore)SteelPhosphate3/4-10 x 3 1/23/4-10 x 3.5 12 pt ctbr scr b18.2.11,031
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General FMI12 Point Flange Screw (CounterBore)SteelPlain3/8-24 x 3/43/8-24 x .75 12 pt ctbr scr b18.2.15,000
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General FMI12 Point Flange Screw (CounterBore)SteelPlain7/16-20 x 1 1/87/16-20 x 1.125 12-pt ctbr scr b18.2.18,533
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General FMI12 Point Flange Screw (CounterBore)SteelPlain3/8-16 x 13/8-16 x 1 12 pt ctbr scr b18.2.1849
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General FMI12 Point Flange Screw (CounterBore)SteelPlain3/4-10 x 63/4-10 x 6 12 pt ctbr scr b18.2.184
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General FMI12 Point Flange Screw (CounterBore)Grade 8Plain29-20 x 1.75 12-pt flange scr gr8 q29 b18.2.1900
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BHAMAL12 Point Flange Screw (CounterBore)SteelPlain3/8-16 x 1 1/43/8-16 x 1 1/4 12 pt flaneg c/s 170m b18.2.1126
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BHAMAL12 Point Flange Screw (CounterBore)SteelPlain5/16-24 x 2 1/45/16-24 x 2-1/4 12 point flange bolt b18.2.1732
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BHAMAL12 Point Flange Screw (CounterBore)SteelPlain3/8-24 x 2 1/23/8-24 x 2 1/2 (12 point) counterbore b18.2.1468
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BHAMAL12 Point Flange Screw (CounterBore)SteelPlain3/8-24 x 2 1/43/8-24 x 2 1/4 (12 point) counterbore b18.2.1974
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BHAMAL12 Point Flange Screw (CounterBore)SteelPlain7/16-14 x 1 1/27/16-14 x 1 1/2 12 pt counterbore bolt b18.2.1770
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain7/16-20 x 2 1/2fine 12-point fl/b b18.2.140
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain5/8-11 x 1 1/4coarse 12-point fl/b b18.2.1210
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain3/8-16 x 3 1/2coarse 12-point fl/b b18.2.125
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain1/2-20 x 1 3/4fine 12-point fl/b b18.2.1195
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain1/2-13 x 5coarse 12-point fl/b b18.2.125
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain1/4-28 x 2fine 12-point fl/b b18.2.1100
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain5/16-24 x 3 1/4fine 12-point fl/b b18.2.150
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain1/4-28 x 2 1/4fine 12-point fl/b b18.2.1100
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain3/8-16 x 2 1/4coarse 12-point fl/b b18.2.119
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 45/16-18x4 coarse 12-point flange screw alloy pln b18.2.135
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain7/8-9 x 2 1/47/8-9x2 1/4 coarse 12-point flange screw alloy pln b18.2.18
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain5/8-18 x 2 3/45/8-18x2 3/4 fine 12-point flange screw alloy pln b18.2.115
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain7/16-14 x 2 1/27/16-14x2 1/2 coarse 12-point flange screw alloy pln b18.2.125
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 3 1/45/16-18x3 1/4 coarse 12-point flange screw alloy pln b18.2.15
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain5/8-18 x 3 1/25/8-18x3 1/2 fine 12-point flange screw alloy pln b18.2.120
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ASMCIL12 Point Flange Screw (CounterBore)SteelPlain1/2-20 x 31/2-20x3 fine 12-point flange screw alloy pln b18.2.133
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-20 x 1 1/41/4-20 x 1 1/4 12 point cap screw alloy b18.2.1100
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-20 x 1 1/41/4-20 x 1 1/4 12 point cap screw alloy b18.2.125
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-20 x 1 1/21/4-20 x 1 1/2 12 point cap screw alloy b18.2.125
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-20 x 1 1/21/4-20 x 1 1/2 12 point cap screw alloy b18.2.150
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-20 x 3/41/4-20 x 3/4 12 point cap screw alloy b18.2.1104
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-28 x 1 1/41/4-28 x 1 1/4 12 point cap screw alloy b18.2.175
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-28 x 1 1/41/4-28 x 1 1/4 12 point cap screw alloy b18.2.1100
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-28 x 1 1/21/4-28 x 1 1/2 12 point cap screw alloy b18.2.1175
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-28 x 1 1/21/4-28 x 1 1/2 12 point cap screw alloy b18.2.125
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain1/4-28 x 3/41/4-28 x 3/4 12 point cap screw alloy b18.2.1200
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 15/16-18 x 1 12 point cap screw alloy b18.2.11294
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 15/16-18 x 1 12 point cap screw alloy b18.2.1100
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 1 1/45/16-18 x 1 1/4 12 point cap screw alloy b18.2.1200
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 1 1/45/16-18 x 1 1/4 12 point cap screw alloy b18.2.150
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 1 3/45/16-18 x 1 3/4 12 point cap screw alloy b18.2.125
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AbabaCA12 Point Flange Screw (CounterBore)SteelPlain5/16-18 x 1 3/45/16-18 x 1 3/4 12 point cap screw alloy b18.2.125
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QFCTX12 Point Flange Screw (CounterBore)SteelZinc/Clear3/4-10 x 2 1/23/4-10x2 1/2 ferry cap screw 170ksi mech zinc mtrs showing hrc 37-45 and chemistry reqd b18.2.180
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QFCTX12 Point Flange Screw (CounterBore)SteelPlain3/8 x 1 1/43/8x1 1/4nc ferry head cap scr b18.2.1100
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QFCTX12 Point Flange Screw (CounterBore)SteelPlain3/4-10 x 2 1/23/4-10x2 1/2 ferry head c/s 170ksi plain mtrs showing hrc 37-45 and chemistry reqd b18.2.12
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QFCTX12 Point Flange Screw (CounterBore)SteelPlain1/2 x 1 1/21/2x1 1/2nf ferry hd cap screw b18.2.1122
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QFCTX12 Point Flange Screw (CounterBore)SteelPlaincounter bore hss 0.625 1/2sh b18.2.11
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QFCTX12 Point Flange Screw (CounterBore)SteelZinc/Clear1-8 x 2 1/41-8x2-1/4 ferry hd cap screw mech zinc b18.2.1103
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QFCTX12 Point Flange Screw (CounterBore)SteelPlain1-8 x 3 1/21-8x3-1/2 ferry hd cap screw b18.2.136
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Spring BoTX12 Point Flange Screw (CounterBore)316, 317, A4 StainlessPlain5/8-11 x 25/8 (11) x 2 flange screw 12 point 316ss b18.2.1 b18.2.1 usainquire
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Spring BoTX12 Point Flange Screw (CounterBore)Grade B7Plain1 1/4-8 x 71-1/4(8) x 7 12 pt flange screw b7 b18.2.1 b18.2.1 usainquire
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Spring BoTX12 Point Flange Screw (CounterBore)Grade B7Plain7/16-14 x 1 3/47/16(14) x 1-3/4 flange screw 12 point a193 b7 / a320 l7 b18.2.1 b18.2.1 usainquire
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Spring BoTX12 Point Flange Screw (CounterBore)316, 317, A4 StainlessPlain5/8-11 x 1 3/45/8 (11) x 1-3/4 flange screw 12 point 316ss b18.2.1 b18.2.1 usainquire
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Spring BoTX12 Point Flange Screw (CounterBore)SteelPlain7/8-9 x 37/8(9) x 3 flange screw 12 point A286 660B b18.2.1 b18.2.1 usainquire
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Spring BoTX12 Point Flange Screw (CounterBore)Grade B16Plain3/4-10 x 73/4(10-3a) x 7 flange screw 12 point ..a193 grade b16 b18.2.1 b18.2.1 usainquire
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Spring BoTX12 Point Flange Screw (CounterBore)Superalloy (Inconel, Hastelloy, Alloy 20)Plain5/16-24 x 2.005/16(24) x 2.00 flange 12-point screw nitronic 60 b18.2.1 b18.2.1 usainquire
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Spring BoTX12 Point Flange Screw (CounterBore)Grade B7Plain7/16-14 x 3/47/16(14) x 3/4 flange screw 12 point..a193 grade b7 b18.2.1 b18.2.1 usainquire
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Spring BoTX12 Point Flange Screw (CounterBore)Superalloy (Inconel, Hastelloy, Alloy 20)Plain5/16-18 x 1.005/16(18) x 1.00 12point flange screw 17-4ph h1150 b18.2.1 b18.2.1 usainquire
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Spring BoTX12 Point Flange Screw (CounterBore)316, 317, A4 StainlessPlain3/4-10 x 33/4 (10) x 3 flange screw 12 point flange screw 316 b18.2.1 b18.2.1 usainquire
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THRDFASTFL12 Point Flange Screw (CounterBore)SteelPlain1/2-13 x 1 1/412 pt counterbore screw b18.2.11
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THRDFASTFL12 Point Flange Screw (CounterBore)SteelPlain5/8-11 x 1 1/412 pt counterbore screw b18.2.11
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THRDFASTOK12 Point Flange Screw (CounterBore)SteelPlain1/4-20 x 7/812 pt counterbore screw b18.2.125
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THRDFASTOK12 Point Flange Screw (CounterBore)SteelPlain1 1/8nf-12x3 12pt counterbore screw b18.2.19
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THRDFASTOK12 Point Flange Screw (CounterBore)SteelPlain11 nf-14x3 12 pt counterbore screw b18.2.11
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WSBKY12 Point Flange Screw (CounterBore)SteelPlain3/4-10 x 8q/screw 12pt flange st (xyl) 3/4-10x8 b18.2.113
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WSBKY12 Point Flange Screw (CounterBore)SteelPlain3/4-10 x 3 1/2screw countrbr 12pt all 3/4-10x3 1/2 b18.2.1712
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WSBKY12 Point Flange Screw (CounterBore)Grade B7Zinc/Yellow1 1/4-8 x 5 1/2q/screw 12pt flange b7 zy 1 1/4-8x5 1/2 b18.2.1192
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WSBKY12 Point Flange Screw (CounterBore)SteelPhosphate1/2-13 x 6q/screw 12pt flange all (po) 1/2-13x6 b18.2.1320
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WSBKY12 Point Flange Screw (CounterBore)SteelPhosphate1/2-13 x 1 1/4q/screw 12pt flange all (po) 1/2-13x1 1/4 b18.2.1865
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WSBKY12 Point Flange Screw (CounterBore)SteelPhosphate1/2-13 x 2 1/4q/screw 12pt flange all (po) 1/2-13x2 1/4 b18.2.14,600
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WSBKY12 Point Flange Screw (CounterBore)SteelPlain3/4-10 x 3 1/4screw 12pt flange alloy (pl) 3/4-10x3 1/4 b18.2.1100
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WSBKY12 Point Flange Screw (CounterBore)SteelPlain7/8-9 x 1 3/4screw 12pt flange alloy (pl) 7/8-9x1 3/4 b18.2.162
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WSBKY12 Point Flange Screw (CounterBore)SteelPlain3/4-10 x 4screw 12pt flange alloy (pl) 3/4-10x4 b18.2.1441
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WSBKY12 Point Flange Screw (CounterBore)SteelPlain7/8-9 x 5screw 12pt flange alloy (pl) 7/8-9x5 b18.2.160
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WSBKY12 Point Flange Screw (CounterBore)SteelPlain3/4-10 x 4screw 12pt flange alloy (pl) 3/4-10x4 b18.2.1347
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain1/2-20 x 11/2-20 x 1 12 point flange bolt alloy plain b18.2.130
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain3/4-16 x 2 3/43/4-16 x 2 3/4 12 point flange bolt plain b18.2.1115
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain3/8-16 x 2 1/43/8-16 x 2 1/4 12 point flange bolt plain b18.2.189
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain3/8-16 x 1 1/43/8-16 x 1 1/4 12 point flange bolt plain b18.2.150
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain3/4-16 x 3 1/23/4-16 x 3 1/2 12 point flange bolt plain b18.2.134
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain5/8-18 x 4 1/25/8-18 x 4-1/2 12 point flange bolt plain b18.2.11
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain3/4-10 x 2 3/43/4-10 x 2 3/4 12 point flange bolt plain b18.2.1177
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain7/16-20 x 1 1/47/16-20 x 1 1/4 12 point flange bolt plain b18.2.1389
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain3/4-10 x 1 1/23/4-10 x 1 1/2 12 point flange bolt plain b18.2.1160
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain3/4-16 x 2 1/43/4-16 x 2 1/4 12 point flange bolt plain b18.2.112
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain3/8-24 x 2 1/43/8-24 x 2 1/4 12 point flange bolt plain b18.2.1142
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain1/2-13 x 21/2-13 x 2 12 point flange bolt plain b18.2.133
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain1-8 x 5 3/41-8 x 5 3/4 12 point flange bolt plain-3 way cross drilled head b18.2.1180
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain1/4-20 x 2 1/21/4-20 x 2-1/2 12 point flange bolt plain b18.2.1149
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain3/8-16 x 43/8-16 x 4 12 point flange bolt plain b18.2.182
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All SizeTX12 Point Flange Screw (CounterBore)SteelPlain5/8-11 x 3 1/25/8-11 x 3-1/2 12 point flange bolt plain b18.2.123
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