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 44

Approved Vendor M8-1.25x45 A4-70 Stainless Steel Hex Cap Screws SKU 5997 $1.77
Approved Vendor M8-1.25x45 Class 10.9 Hex Flange Bolts Phos & Oil SKU 27339 $0.95
Approved Vendor M8-1.25x45 Class 10.9 Hex Flange Bolts Zinc Yellow SKU 27171 $1.07
Approved Vendor M8-1.25x45 Class 10.9 JIS Hex Flange Bolts Zinc Clear SKU 27191 $1.02
Approved Vendor M8-1.25x45 Class 8.8 Hex Cap Screws Zinc Clear SKU 27283 $0.76
Approved Vendor M8-1.25x45 Class 8.8 Hex Flange Bolts Zinc Clear SKU 27343 $1.05
Approved Vendor M8-1.25x50 A4-70 Stainless Steel Hex Cap Screws SKU 5998 $1.93
Approved Vendor M8-1.25x50 Class 10.9 Hex Cap Screws Zinc Clear SKU 26857 $0.80
Approved Vendor M8-1.25x50 Class 10.9 Hex Cap Screws Zinc Yellow SKU 27399 $1.07
Approved Vendor M8-1.25x50 Class 10.9 Hex Flange Bolts Phos & Oil SKU 27232 $1.04
Approved Vendor M8-1.25x50 Class 10.9 Hex Flange Bolts Zinc Clear SKU 27472 $1.17
Approved Vendor M8-1.25x50 Class 10.9 Hex Flange Bolts Zinc Yellow SKU 26993 $1.15
Approved Vendor M8-1.25x50 Class 10.9 JIS Hex Flange Bolts Zinc Clear SKU 27049 $1.10
Approved Vendor M8-1.25x50 Class 8.8 Full Thread Hex Cap Screws Zinc Clear SKU 27494 $0.74
Approved Vendor M8-1.25x50 Class 8.8 Hex Cap Screws Zinc Clear SKU 26853 $0.64
Approved Vendor M8-1.25x50 Class 8.8 Hex Flange Bolts Zinc Yellow SKU 27366 $1.22
Approved Vendor M8-1.25x55 A4-70 Stainless Steel Hex Cap Screws SKU 5999 $2.06
Approved Vendor M8-1.25x55 Class 8.8 Hex Cap Screws Zinc Clear SKU 27404 $0.89
Approved Vendor M8-1.25x60 A4-70 Stainless Steel Hex Cap Screws SKU 6000 $2.21
Approved Vendor M8-1.25x60 Brass Hex Cap Screws SKU 28904 $5.55
Approved Vendor M8-1.25x60 Class 10.9 Hex Cap Screws Zinc Clear SKU 27346 $1.26
Approved Vendor M8-1.25x60 Class 10.9 Hex Cap Screws Zinc Yellow SKU 27487 $1.24
Approved Vendor M8-1.25x60 Class 10.9 Hex Flange Bolts Phos & Oil SKU 27210 $1.17
Approved Vendor M8-1.25x60 Class 10.9 Hex Flange Bolts Zinc Yellow SKU 26962 $1.26
Approved Vendor M8-1.25x60 Class 10.9 JIS Hex Flange Bolts Zinc Clear SKU 27144 $1.24
Approved Vendor M8-1.25x60 Class 8.8 Hex Cap Screws Zinc Clear SKU 27113 $0.73
Approved Vendor M8-1.25x70 A4-70 Stainless Steel Hex Cap Screws SKU 6001 $2.55
Approved Vendor M8-1.25x70 Brass Hex Cap Screws SKU 28903 $7.40
Approved Vendor M8-1.25x70 Class 10.9 Hex Cap Screws Zinc Clear SKU 27345 $1.31
Approved Vendor M8-1.25x70 Class 10.9 Hex Flange Bolts Phos & Oil SKU 27338 $1.36
Approved Vendor M8-1.25x70 Class 10.9 Hex Flange Bolts Zinc Yellow SKU 27007 $1.42
Approved Vendor M8-1.25x70 Class 8.8 Hex Cap Screws Zinc Clear SKU 27240 $1.12
Approved Vendor M8-1.25x70 Class 8.8 Hex Flange Bolts Zinc Clear SKU 27432 $1.56
Approved Vendor M8-1.25x75 A4-70 Stainless Steel Hex Cap Screws SKU 6002 $2.70
Approved Vendor M8-1.25x80 A4-70 Stainless Steel Hex Cap Screws SKU 6003 $2.84
Approved Vendor M8-1.25x80 Class 10.9 Hex Flange Bolts Phos & Oil SKU 27274 $1.67
Approved Vendor M8-1.25x80 Class 10.9 Hex Flange Bolts Zinc Yellow SKU 27054 $1.71
Approved Vendor M8-1.25x80 Class 8.8 Hex Cap Screws Zinc Clear SKU 27376 $1.27
Approved Vendor M8-1.25x80 Class 8.8 Hex Flange Bolts Zinc Yellow SKU 27478 $1.92
Approved Vendor M8-1.25x90 A4-70 Stainless Steel Hex Cap Screws SKU 6004 $3.19
Approved Vendor M8-1.25x90 Class 10.9 Hex Flange Bolts Zinc Yellow SKU 27148 $5.09
Milwaukee Open-Lok 1-3/8" HCS Woodmulti-Tool Blade SKU 495-49-25-1101 $11.45
Milwaukee Open-Lok 1-3/8"HCS Woodmulti-Tool Blades SKU 495-49-25-1103 $9.94
Milwaukee Open-Lok 2-1/2" HCS Woodmulti-Tool Blades SKU 495-49-25-1113 $11.24
Milwaukee Open-Lok 2-1/2" HCS Woodmulti-Tool Blades 10pk SKU 495-49-25-1119 $10.11/pack of 10

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