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1/2-20 Hex Bolts

Hex Machine Bolts are threaded bolts with a hexagonal head on one end, with no washer face on the bearing surface and a threaded shaft on the other end. Hex bolts are tightened with a wrench and are used to connect metal parts. The body tolerances of hex machine bolts are not as close as those of hex cap screws. Hex machine bolts are covered under ASME Standard B18.2.1

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 1/41/2-20x1-1/4 18-8 ss fin hex bolt fine thread2
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SunPackFLHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 11/2-20x1 j429 gr8 fin hex bolt yellow zinc fine thread45
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SunPackFLHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 31/2-20x3 j429 gr8 fin hex bolt yellow zinc fine thread60
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Future FastenerTXHex Machine BoltGrade 5Zinc/Clear1/2-20 x 1 1/41/2-20x1 1/4 g5 hex bolt plt50
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CenturyFLHex Machine BoltGrade 5Plain1/2-20 x 111/2-20 x 11 hex hd bolt gr 5 20
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CenturyFLHex Machine BoltSteelCadmium/Yellow1/2-20 x 31/32an8-7a bolt (BOLT) (BOLT) 1564
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CenturyFLHex Machine BoltSteelCadmium/Yellow1/2-20 x 2 31/32an8-27a 4
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CenturyFLHex Machine BoltSteelCadmium/Yellow1/2-20 x 3 3/32an8-30 bolt 2
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CenturyFLHex Machine BoltSteelCadmium/Yellow1/2-20 x 1 15/32an8-13a 46
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EndriesWIHex Machine BoltSteelPlain1/2-20 x 1 1/21/2-20x1 1/2 hex bolt per print ms-121550
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MESAFASTCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 2h/b 18-8 s/s19.0
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MESAFASTCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 1/2h/b 18-8 s/s19.0
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MESAFASTCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1h/b 18-8 s/s22.0
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MESAFASTCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 2 1/2h/b 18-8 s/s68.0
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MESAFASTCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 3/4h/b gr550.0
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MESAFASTCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 2h/b gr5177.0
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MESAFASTCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 2 1/2h/b gr5144.0
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MESAFASTCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 1 1/4h/b gr533.0
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MESAFASTCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 1h/b gr525.0
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GLFOHHex Machine BoltSteelCadmium/Yellow1/2-20 x 4 31/32bolt AN8-47 b18.2.1 () () ()138
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GLFOHHex Machine BoltSteelCadmium/Yellow1/2-20 x 4 23/32bolt AN8-45 b18.2.1 () () ()14
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GLFOHHex Machine BoltSteelCadmium/Yellow1/2-20 x 1 7/32bolt AN8-11A b18.2.1 () () ()164
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GLFOHHex Machine BoltSteelCadmium/Yellow1/2-20 x 2 11/32an8-22a b18.2.1 () ()2
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GLFOHHex Machine BoltSteelCadmium/Yellow1/2-20 x 1 11/32an8-12a b18.2.1 () () ()1100
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SunPackFLHex Machine BoltGrade 5Zinc/Clear1/2-20 x 3 1/41/2-20x3-1/4 gr5 fin hex bolt zinc fine thread5
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 5 1/21/2-20 x 5 1/2 g8 y/zn hex hd bolts ptstock
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 4 1/21/2-20 x 4 1/2 g8 y/zn hex hd bolts pt3,720
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 3 1/41/2-20 x 3 1/4 g8 y/zn hex hd bolts p/thstock
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MTPCAHex Machine BoltGrade 8Zinc/Clear1/2-20 x 2 1/41/2-20 x 2 1/4 gr.8 zn hex hd boltsstock
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 2 1/41/2-20 x 2 1/4 gr.8 y/zn hex hd boltsstock
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 11/2-20 x 1 g8 y/zn hex hd bolts4,950
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MTPCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 11/2-20x1 gr.5 zn hex hd bolt300
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MTPCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 3 1/21/2-20x3 1/2 gr.5 zn hex hd bolt50
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RapidNYHex Machine BoltSteelCadmium/Yellow1/2-20 x 27/32bolt machine aircraft alloy steel 1/2-20 unf-3a 0.499-0.495 dia. x 0.844 long 0.063 grip cadmium plated ams-qq-p-416 type ii class 2 un-drilled head & shank AN8-6A1650
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RapidNYHex Machine BoltSteelCadmium/Yellow1/2-20 x 2 19/32bolt machine aircraft alloy steel 1/2-20 unf-3a 0.499-0.495 dia. x 2.594 long 1.813 grip cadmium plated ams-qq-p-416 type ii class 2 un-drilled head & shank AN8-24A4
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RapidNYHex Machine BoltSteelCadmium/Yellow1/2-20 x 4 15/32bolt machine aircraft alloy steel 1/2-20 unf-3a 0.499-0.495 dia. x 4.469 long 3.688 grip cadmium plated ams-qq-p-416 type ii class 2 un-drilled head & shank AN8-43A300
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RapidNYHex Machine BoltSteelCadmium/Yellow1/2-20 x 3 7/32bolt machine aircraft alloy steel 1/2-20 unf-3a 0.499-0.495 dia. x 3.219 long 2.438 grip cadmium plated ams-qq-p-416 type ii class 2 un-drilled head & shank AN8-31A29
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RapidNYHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/2-20 x 2.219bolt-machine close tolerance aircraft 431 cres 1/2-20 unf-3a x 2-7/32 length (1.4375 grip) passivate per ams2700 undrilled AN178C21A1
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RapidNYHex Machine BoltSteelCadmium/Yellow1/2-20 x 4 31/32bolt machine aircraft alloy steel 1/2-20 unf-3a 0.499-0.495 dia. x 4.969 long 4.188 grip cadmium plated ams-qq-p-416 type ii class 2 drilled shank only AN8-4725
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RapidNYHex Machine BoltSteelCadmium/Yellow1/2-20 x 1 27/32bolt machine aircraft alloy steel 1/2-20 unf-3a 0.499-0.495 dia. x 1.844 long 1.063 grip cadmium plated ams-qq-p-416 type ii class 2 un-drilled head & shank AN8-16A60
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RapidNYHex Machine BoltSteelCadmium/Yellow1/2-20 x 5 23/32bolt machine aircraft alloy steel 1/2-20 unf-3a 0.499-0.495 dia. x 5.719 long 4.938 grip cadmium plated ams-qq-p-416 type ii class 2 un-drilled head & shank AN8-55A180
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HBBOLTCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 5h/b50
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HBBOLTCAHex Machine Bolt316, 317, A4 StainlessPlain1/2-20 x 2h/b [316 ]30
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HBBOLTCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 3/4h/b [18-8 304]110
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ParkerAZHex Machine BoltSteelPassivated1/2-20 x 1.7351/2-20 x 1.735 hex cap screw .735 thread a286 hardened passivate per nas6708u16 made in u.s.a.675
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ParkerAZHex Machine BoltSteelPassivated1/2-20 x 1.7351/2-20 x 1.735 hex cap screw .735 thread a286 hardened passivate per nas6708u16 made in u.s.a.675
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 1/418-8 ss fin h/b fine thread fine thread2
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SunPackFLHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 31/2-20x3 j429 gr8 fin hex bolt yellow zinc fine thread fine thread60
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SunPackFLHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 11/2-20x1 j429 gr8 fin hex bolt yellow zinc fine thread fine thread50
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SunPackFLHex Machine BoltGrade 5Zinc/Clear1/2-20 x 3 1/4gr5 fin h/b fine thread fine thread5
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FasSpcMfgFLHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain1/2-20 x 1 1/41/2-20x1-1/4 h/b nitronic 601
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FasSpcMfgFLHex Machine BoltSilicon BronzePlain1/2-20 x 21/2-20x2 h/b 655 thread length 1.251
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HodellOHHex Machine BoltSteelPlain1/2-20 x 1 5/321/2-20x1-5/32 spcl hxblt tri/zi/ye to prt6
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SISAZHex Machine BoltGrade 8Plain1/2-20 x 2h/b150
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BHAMALHex Machine BoltSteelPlain1/2-20 x 1 59/64ms20073-08-17 1/2-20 x 1-59/64 bolt5
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JacksonMSHex Machine BoltGrade 8Plain1/2-20 x 1nf l.h. h/b custom order1
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FDLILHex Machine BoltGrade 5Plain1/2-20 x 1 3/41/2-20 x 1-3/4 hex hd machine bolt grade 5 steel plain per drawing#1536895 rev. a 300pcs/ctn & 18.6kgs/ctn b18.2.12500
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FDLILHex Machine BoltGrade 5Plain1/2-20 x 1 3/41/2-20 x 1-3/4 hex hd machine bolt grade 5 steel plain per drawing#1536895 rev. a 300pcs/ctn & 18.6kgs/ctn b18.2.12500
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 3 1/41/2-20 x 3 1/4 g8 y/zn hex hd bolts p/thstock
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 3 1/41/2-20 x 3 1/4 g8 y/zn hex hd bolts p/thstock
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JET FITTINGCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 3/4bolt hex 1/220x3/4 stainless steel b18.2.178
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OBRIENOHHex Machine BoltGrade 5Zinc/Clear1/2-20 x 2f.t. h/b gr5100
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OBRIENOHHex Machine BoltGrade 8Plain1/2-20 x 7f/t h/b gr841
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OBRIENOHHex Machine BoltGrade 8Plain1/2-20 x 2 1/2f/t h/b gr850
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 3 1/41/2-20 x 3 1/4 g8 y/zn hex hd bolts p/thstock
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 1 1/21/2-20 x 1 1/2 g8 y/zn hex hd bolts190
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MTPCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 2 1/41/2-20 x 2-1/4 gr.5 zn hex hd bolts a bb 25 fb 50 qk 250195
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MTPCAHex Machine BoltGrade 5Plain1/2-20 x 51/2-20 x 5 gr.5 hex hd boltsstock
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 1 1/41/2-20 x 1 1/4 g8 y/zn hex hd bolts40
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 2 3/41/2-20 x 2 3/4 gr.8 y/zn hex hd bolts99
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MTPCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 31/2-20 x 3 gr.5 zn hex hd bolts46
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MTPCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 21/2-20 x 2 gr.5 zn hex hd bolts a bb 25 fb 50 qk 250stock
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 51/2-20 x 5 g8 y/zn hex hd bolts99
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 3 3/41/2-20 x 3 3/4 gr.8 y/zn hex hd boltsstock
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 1 3/41/2-20 x 1 3/4 g8 y/zn hex hd bolts125
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MTPCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 3 3/41/2-20 x 3 3/4 gr.5 zn hex hd bolts40
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MTPCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 1 1/21/2-20 x 1 1/2 18-8 s.s hex hd bolts100
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 31/2-20 x 3 gr.8 y/zn hex hd bolts a bb 100 fb 500 qk 2500100
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 3 1/21/2-20 x 3 1/2 gr.8 y/zn hex hd boltsstock
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 2 1/21/2-20 x 2 1/2 gr.8 y/zn hex hd bolts a bb 100 fb 500 qk 25002,265
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MTPCAHex Machine BoltGrade 8Electrolytic Zinc Basecoat + Topcoats (Climacoat, Climaseal, etc.)1/2-20 x 21/2-20 x 2 gr.8-y/zn hex hd bolts a bb 100 fb 500 qk 2500175
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MTPCAHex Machine BoltGrade 8Electrolytic Zinc Basecoat + Topcoats (Climacoat, Climaseal, etc.)1/2-20 x 3 3/41/2-20 x 3 3/4 gr.8 blk hex hd bolts f/th a bb 100 fb 500 qk 2500stock
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MTPCAHex Machine BoltGrade 5Zinc/Clear1/2-20 x 2 1/21/2-20 x 2 1/2 gr.5 zn hex hd bolts a bb 100 fb 500 qk 2500425
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MTPCAHex Machine BoltGrade 8Zinc/Yellow1/2-20 x 41/2-20 x 4 gr.8 y/zn hex hd bolts a bb 100 fb 500 qk 2500stock
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All SizeTXHex Machine BoltGrade 8Plain1/2-20 x 41/2-20 x 4 gr. 8 hex bolt plain b18.2.1106
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All SizeTXHex Machine BoltGrade 5Plain1/2-20 x 21/2-20 x 2 gr. 5 hex bolt b18.2.151
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All SizeTXHex Machine BoltGrade 5Plain1/2-20 x 51/2-20 x 5 gr. 5 hex bolt b18.2.15
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All SizeTXHex Machine BoltGrade 8Plain1/2-20 x 71/2-20 x 7 gr. 8 hex bolt b18.2.190
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All SizeTXHex Machine BoltGrade 8Plain1/2-20 x 2 1/21/2-20 x 2 1/2 gr. 8 hex bolt plain b18.2.150
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 3/41/2-20 x 3/4 hex bolt-ss b18.2.161
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All SizeTXHex Machine BoltGrade 8Plain1/2-20 x 621/21/2-20 x 621/2 gr. 8 hex bolt drilled end-1/8 drilled 1/8 from the end b18.2.110
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OptimasILHex Machine BoltSteelPlain1/2-20 x 4 1/21/2-20 x 4-1/2 asme b18.2.1 hex bolt1,000
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OptimasILHex Machine BoltSteelPlain1/2-20 x 4 1/21/2-20 x 4-1/2 asme b18.2.1 hex bolt1,000
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OptimasILHex Machine BoltSteelPlain1/2-20 x 4 1/21/2-20 x 4-1/2 asme b18.2.1 hex machine bolt1000
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