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Counterbore Screws, Steel
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
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| 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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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Black | 5/16-18 x 7/8 | 5/16-18x7/8 blk/zn 12 point flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 9/16-18 x 2 1/4 | 9/16-18 x 2 1/4 alloy 170psi 12 point flange bolts hrc 38-43 1-1/4 thread length | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 9/16-18 x 5 1/2 | 9/16-18 x 5 1/2 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38-43 | 2,710 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 9/16-18 x 6 | 9/16-18 x 6 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38-43 | 2,710 |
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| TownCountry | AR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8 x 3/16 | adjustable counterbore #5 | 4 |
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| TownCountry | AR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 13/64 | adjustable counterbore style #5 1/2 shank 4 1/2 oal | 1 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 1 1/2 | 7/16-20 x 1 1/2 alloy 12 point flange bolts | 13,150 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | M12-1.50 x 25 | m12-1.50 x 25 chromoly 4340 zn with heaby nylon patch 180m psi tensile 12 point flange bolt | 1,800 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Black | M12-1.25 x 140 | m12-1.25 x 140 chromoly 4340 blk/zn 180m psi tensile 12 point flange bolts thread class mj-4g6g | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 1 1/4 | 7/16-20 x 1 1/4 alloy 12 point flange bolts | 9,100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 alloy zn 12 pt flange screws | 300 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 1 1/4 | 1/2-20 x 1 1/4 alloy zn 12 pt flange screws | 114 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 2 1/4 | 3/4-10 x 2 1/4 nc ferry head c/s plain | 15 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2-1/4 nc ferry head c/s plain | 6 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3/4 | nc ferry c/s 170m psi 12-pt fl/b finish | 31 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-9 x 3 | 7/8-9 x 3 nc ferry head c/s plain | 4 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-14 x 2 | 7/8-14 x 2 nf ferry head c/s plain | 65 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 | 1/4-20 x 2 12 pt flange screw alloy steel | 96 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 3/4 | 1/4-20 x 1-3/4 12 pt flange screw alloy steel | 97 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8 12 pt flange screw alloy steel | 398 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/4 | 1/4-20 x 1-1/4 12 pt flange screw alloy steel | 35 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 | 1/4-20 x 1 12 pt flange screw alloy steel | 5 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16 x 1-1/2 12 pt flange screw alloy steel | 87 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3/4 | 3/8-16 x 3/4 12 pt flange screw alloy steel | 34 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 5/16-18 x 1/2 | 5/16-18 x 1/2 12 pt flange screw alloy steel zinc | 10 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3 | 3/8-16 x 3 12 pt flange screw alloy steel | 43 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | 3/8-16 x 2 12 pt flange screw alloy steel | 95 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/4 | 3/8-16 x 2-1/4 12 pt flange screw alloy steel | 9 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 12 pt flange screw alloy steel | 32 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | 1/2-20 x 3 12 pt flange screw alloy steel | 12 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | 1/2-13 x 3 12 pt flange screw alloy steel | 73 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2-1/2 12 pt flange screw alloy steel | 109 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-14 x 2 | 7/16-14 x 2 12 point flange screw alloy steel plain (bd8flb03502014p-s/50) (bd8flb03502014p/500) | 85 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | 1/2-20 x 2 12 pt flange screw alloy steel (170 000 psi) | 25 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | 1/2-20 x 1-1/2 12 pt flange screw alloy steel | 9 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/4 | 5/8-11 x 1-1/4 12 pt flange screw alloy steel | 13 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 | 5/8-11 x 1 12 pt flange screw alloy steel | 13 |
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| YANKEE | NH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4-12-point flange screw high strength alloy steel | 41 |
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| YANKEE | NH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/2 | 3/8-16 x 2-1/2 12 point flange bolt-high tensile strength-alloy steel | 20 |
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| YANKEE | NH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1.25 | -12-pt flange high strength screw | 72 |
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| Endries | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-9 x 2 1/4 | 7/8-9x2-1/4 alloy stl 170 000 psi 12 point flange screw | 10 |
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| OneMonroe | NC | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | M6-1.0-1.00 x 16 | m6-1.0 x 16 ind hex phil double sem yellow zinc | 2000 |
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| OneMonroe | NC | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | M6-1.0-1.00 x 20 | m6-1.0 x 20 ind hex phil double sem yellow zinc | 2200 |
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| OneMonroe | NC | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1-1/4 12 point plain finish flange screw | 85 |
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| OneMonroe | NC | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1-8 x 4 | 1-8 x 4 12 point plain finish flange screw | 5 |
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| OneMonroe | NC | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/2 | 5/8-11 x 1 1/2 12 pt. counterbore screw | 25 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/8-24 x 1 | nf ferry c/s | 35 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | ferry c/s | 1 |
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| Future Fastener | TX | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/4-16 x 2 | 3/4-16x2 ferry hd cap screw blk | 900 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4 x 4-1/2 ferry head cap screw 170m psi 12 point plain partially threaded | 8 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 3 | 5/8-11 x 3 12 pt flange screw alloy steel | 5 |
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| Endries | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-9 x 6 1/2 | 7/8-9x6-1/2 alloy stl 170 000 psi 12 point flange screw plain | 6 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | M8-1.25 x 20 | m8-1.25 x 20 12 point cap screw alloy | 246 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/4 | 1/4-20 x 1 1/4 12 point cap screw alloy b18.2.1 | 100 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 3/4 | 1/4-20 x 3/4 12 point cap screw alloy b18.2.1 | 75 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/4 | 1/4-28 x 1 1/4 12 point cap screw alloy b18.2.1 | 125 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/2 | 1/4-28 x 1 1/2 12 point cap screw alloy b18.2.1 | 65 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 3/4 | 1/4-28 x 3/4 12 point cap screw alloy b18.2.1 | 20 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 | 5/16-18 x 1 12 point cap screw alloy b18.2.1 | 69 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 12 point cap screw alloy b18.2.1 | 50 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 3/4 | 5/16-18 x 1 3/4 12 point cap screw alloy b18.2.1 | 75 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 12 point cap screw alloy b18.2.1 | 62 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 7/8 | 5/16-18 x 7/8 12 point cap screw alloy b18.2.1 | 125 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 1 | 5/16-24 x 1 12 point cap screw alloy b18.2.1 | 295 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 1 1/4 | 5/16-24 x 1 1/4 12 point cap screw alloy b18.2.1 | 120 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 3/4 | 5/16-24 x 3/4 12 point cap screw alloy b18.2.1 | 150 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 7/8 | 5/16-24 x 7/8 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16 x 1 12 point cap screw alloy b18.2.1 | 44 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16 x 1 1/2 12 point cap screw alloy b18.2.1 | 111 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 | 3/8-24 x 1 12 point cap screw alloy b18.2.1 | 60 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/8-24 x 1 1/4 | 3/8-24 x 1 1/4 12 point cap screw alloy znc b18.2.1 | 2224 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 1/2 | 3/8-24 x 1 1/2 12 point cap screw alloy b18.2.1 | 72 |
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| Express | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 5/16-24 x 1 3/4 | 5/16-24x1-3/4 flange bolt 12pt black alloy | 400 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 1-14 x 2 3/4 | scr 12pt flange (po) dhd 1-14x2 3/4 (W030) (W030) | 54 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | x 3 1/2 | scr 12pt flange all pl 3/4-16x3 1/2 (W000) (W000) | 347 |
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| OneMonroe | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | M3.5 | screw m3.5x12 pt pan/phil steel zinc | 2974 |
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| OneMonroe | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Black | M3.5 | screw m3.5x12 pt pan/phil black zinc | 1884 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Black | 5/16-18 x 7/8 | 5/16-18x7/8 blk/zn 12 point flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 9/16-18 x 5 1/2 | 9/16-18 x 5 1/2 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38-43 | 2,710 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 9/16-18 x 6 | 9/16-18 x 6 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38-43 | 2,710 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 9/16-18 x 2 1/4 | 9/16-18 x 2 1/4 alloy 170psi 12 point flange bolts hrc 38-43 1-1/4 thread length | 4,179 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/8-16 x 1 | 3/8-16 x 1 zinc 12 point flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 7/8 | 1/2-20x7/8 alloy yzn 12 point flange bolt | stock |
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| OneMonroe | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | screw hex double sems m4x8 split & flat combo 10mm od on flat steel yellow zinc | 1150 |
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| HBBOLT | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 1/4 | m psi 12 pt fl/b | 100 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 1 3/4 | scr 12pt flange st (zn) 1/2-13x1 3/4 (W050) | 836 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 1 1/4 | 1/2x1 1/4nc ferry head cap screw b18.2.1 | 100 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 ferry head c/s alloy plain b18.2.1 | 800 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/4-10 x 2 | 3/4-10x2 ferry head c/s 170ksi mech zinc mtrs must show hrc 37-45 and chemistry b18.2.1 | 74 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4 | 1/4 counterbore # csc55655 b18.2.1 | 1 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 | 5/16-18 x 1 12 pt flange bolts b18.2.1 | 9 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 12 pt flange bolts b18.2.1 | 347 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 1 | 5/16-24 x 1 12 pt flange bolts b18.2.1 | 54 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 3/4 | 3/8-16 x 1 3/4 12 pt flange bolts b18.2.1 | 2 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 3/4 | 3/8-16 x 4 3/4 12 pt flange bolts b18.2.1 | 104 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 12 pt flange bolts b18.2.1 | 25 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2 1/2 12 pt flange bolts b18.2.1 | 25 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 12 pt flange bolts b18.2.1 | 65 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 3/4 | 5/8-11 x 1 3/4 12 pt flange bolts b18.2.1 | 44 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 2 | 5/8-18 x 2 12 pt flange bolts b18.2.1 | 17 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 2 1/2 | 5/8-18 x 2 1/2 12 pt flange bolts b18.2.1 | 28 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-14 x 4 | 7/8-14 x 4 12 pt flange bolts b18.2.1 | 1 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 9/16-18 x 2 1/4 | 9/16-18 x 2 1/4 alloy 170psi 12 point flange bolts hrc 38-43 1-1/4 thread length | stock |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | ferry c/s | 5 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | M10-1.25 x 130 | m10-1.25 x 130 chromoly 4340 zn 190m psi tensile 12 point flange bolts | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | M10-1.25 x 140 | m10-1.25 x 140 chromoly 4340 zn 190m psi tensile 12 point flange bolts | stock |
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| Eurolink | SC | 12 Point Flange Screw (CounterBore) | Steel | Galvanized | M12 | m12 lindapter gt f 9 hot dip galvanized lindapter flange clamp with two parts with screws nuts and washers | 1 |
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| Eurolink | SC | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | M12 | m12 lindapter gt f 9 zinc plated lindapter flange clamp with two parts with screws nuts and washers | 1 |
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