Hex Bolts & Cap Screws

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Expected delivery: Wed, Nov 18

Hex bolts and hex cap screws are the workhorse fasteners for machinery, structural brackets, truck bodies and equipment repair. This section covers inch sizes in UNC and UNF threads and metric sizes in class 8.8 and 10.9, with partial or full threads. Materials include Grade 2, Grade 5 and Grade 8 steel plus 18-8 and 316 stainless, in plain, zinc, yellow zinc and hot-dip galvanized finishes.

What to check before you order

Grade or property class. Match the grade to the load. Grade 5 covers most equipment work, and Grade 8 is for high-stress joints such as suspension and heavy machinery. The hex bolt grades guide shows head markings.
Thread pitch. A 1/2" bolt comes in 1/2"-13 coarse and 1/2"-20 fine. They will not interchange, so confirm the nut or tapped hole first.
Length and thread length. Measure from under the head. Longer bolts are often partially threaded, which leaves a smooth shank in the shear plane.
Finish. Hot-dip galvanized bolts need galvanized nuts, because the coating adds thickness to the threads.

Common questions

Is a Grade 8 bolt always the safer choice?

Not always. Grade 8 is stronger but less ductile than Grade 5. Use the grade the equipment maker or engineer specifies.

Pair your bolts with matching nuts and washers, or browse all fasteners.

Hex Bolts & Cap Screws: page 37

Approved Vendor M12-1.75x60 Class 8.8 Hex Flange Bolts Zinc Yellow SKU 27391 $3.21
Approved Vendor M12-1.75x65 A4-70 Stainless Steel Hex Cap Screws SKU 6034 $5.63
Approved Vendor M12-1.75x65 Class 10.9 Hex Flange Bolts Phos & Oil SKU 27337 $3.22
Approved Vendor M12-1.75x70 A4-70 Stainless Steel Hex Cap Screws SKU 6035 $5.96
Approved Vendor M12-1.75x70 Class 10.9 Hex Cap Screws Zinc Clear SKU 27238 $2.23
Approved Vendor M12-1.75x70 Class 10.9 Hex Flange Bolts Phos & Oil SKU 26900 $0.98
Approved Vendor M12-1.75x70 Class 10.9 Hex Flange Bolts Zinc Clear SKU 27469 $3.44
Approved Vendor M12-1.75x70 Class 10.9 Hex Flange Bolts Zinc Yellow SKU 26940 $3.64
Approved Vendor M12-1.75x70 Class 8.8 Hex Cap Screws Zinc Clear SKU 27401 $1.80
Approved Vendor M12-1.75x75 A4-70 Stainless Steel Hex Cap Screws SKU 6036 $6.59
Approved Vendor M12-1.75x75 Class 10.9 Hex Flange Bolts Phos & Oil SKU 27170 $3.28
Approved Vendor M12-1.75x80 A4-70 Stainless Steel Hex Cap Screws SKU 6037 $6.93
Approved Vendor M12-1.75x80 Class 10.9 Hex Cap Screws Zinc Clear SKU 27396 $2.50
Approved Vendor M12-1.75x80 Class 10.9 Hex Flange Bolts Phos & Oil SKU 27229 $3.47
Approved Vendor M12-1.75x80 Class 10.9 Hex Flange Bolts Zinc Yellow SKU 26910 $3.23
Approved Vendor M12-1.75x80 Class 8.8 Hex Cap Screws Zinc Clear SKU 27372 $2.23
Approved Vendor M12-1.75x90 A4-70 Stainless Steel Hex Cap Screws SKU 6038 $7.57
Approved Vendor M12-1.75x90 Class 10.9 Hex Cap Screws Zinc Yellow SKU 27395 $4.14
Approved Vendor M12-1.75x90 Class 10.9 Hex Flange Bolts Phos & Oil SKU 27118 $3.79
Approved Vendor M12-1.75x90 Class 10.9 Hex Flange Bolts Zinc Yellow SKU 27360 $4.42
Approved Vendor M14-1.50x35 Class 8.8 Hex Cap Screws Zinc Clear SKU 28920 $3.55
Approved Vendor M14-1.5x100 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 26872 $8.01
Approved Vendor M14-1.5x100 Class 10.9 Fine Thread Hex Flange Bolts Zinc Yellow SKU 27169 $8.01
Approved Vendor M14-1.5x120 Class 10.9 Fine Thread Hex Cap Screws Zinc Clear SKU 27214 $8.02
Approved Vendor M14-1.5x30 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 26743 $3.64
Approved Vendor M14-1.5x30 Class 10.9 Fine Thread Hex Flange Bolts Zinc Yellow SKU 26852 $3.64
Approved Vendor M14-1.5x35 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 27145 $4.01
Approved Vendor M14-1.5x35 Class 10.9 Fine Thread Hex Flange Bolts Zinc Yellow SKU 27293 $4.01
Approved Vendor M14-1.5x40 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 27006 $4.34
Approved Vendor M14-1.5x40 Class 10.9 Fine Thread Hex Flange Bolts Zinc Yellow SKU 26961 $4.34
Approved Vendor M14-1.5x45 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 27017 $4.63
Approved Vendor M14-1.5x45 Class 10.9 Fine Thread Hex Flange Bolts Zinc Yellow SKU 27005 $4.63
Approved Vendor M14-1.5x50 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 26893 $4.82
Approved Vendor M14-1.5x60 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 27268 $5.37
Approved Vendor M14-1.5x60 Class 10.9 Fine Thread Hex Flange Bolts Zinc Yellow SKU 27080 $5.41
Approved Vendor M14-1.5x70 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 26865 $5.98
Approved Vendor M14-1.5x70 Class 10.9 Fine Thread Hex Flange Bolts Zinc Yellow SKU 27116 $5.98
Approved Vendor M14-1.5x80 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 26825 $6.59
Approved Vendor M14-1.5x80 Class 10.9 Fine Thread Hex Flange Bolts Zinc Yellow SKU 26960 $6.59
Approved Vendor M14-1.5x90 Class 10.9 Fine Thread Hex Flange Bolts Phos & Oil SKU 27106 $7.18
Approved Vendor M14-1.5x90 Class 10.9 Fine Thread Hex Flange Bolts Zinc Yellow SKU 26848 $7.18
Approved Vendor M14-2.00x100 Class 10.9 Hex Cap Screws Zinc Yellow SKU 27024 $6.70
Approved Vendor M14-2.00x110 Class 10.9 Hex Cap Screws Zinc Yellow SKU 27394 $8.66
Approved Vendor M14-2.00x120 Class 10.9 Hex Cap Screws Zinc Yellow SKU 26949 $7.90
Approved Vendor M14-2.00x55 Class 8.8 Hex Cap Screws Zinc Clear SKU 28923 $3.15
Approved Vendor M14-2.00x60 Class 10.9 Hex Cap Screws Zinc Yellow SKU 28912 $4.20
Approved Vendor M14-2.00x70 Class 10.9 Hex Cap Screws Zinc Yellow SKU 28911 $4.65
Approved Vendor M14-2.00x70 Class 8.8 Full Thread Hex Cap Screws Zinc Clear SKU 28922 $5.73

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