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 14

Approved Vendor 3/4"-10x2-1/4" Hex Cap Screws Grade L-9 Bolts USA Zinc Yellow SKU 21039 $16.70
Approved Vendor 3/4"-10x2-3/4" Hex Cap Screws Grade L-9 Bolts USA Zinc Yellow SKU 21042 $19.78
Approved Vendor 3/4"-10x3" Hex Cap Screws Grade L-9 Bolts USA Zinc Yellow SKU 21045 $21.19
Approved Vendor 3/4"-10x3-1/2" Hex Cap Screws Grade L-9 Bolts USA Zinc Yellow SKU 21048 $24.78
Approved Vendor 3/4"-10x4" Hex Cap Screws Grade L-9 Bolts USA Zinc Yellow SKU 21054 $27.19
Approved Vendor 3/4"-10x4-1/2" Hex Cap Screws Grade L-9 Bolts USA Zinc Yellow SKU 21057 $29.68
Approved Vendor 3/4"-10x5" Hex Cap Screws Grade L-9 Bolts USA Zinc Yellow SKU 21060 $32.65
Approved Vendor 3/4"-10x5-1/2" Hex Cap Screws Grade L-9 Bolts USA Zinc Yellow SKU 21063 $35.51
Approved Vendor 3/4"-10x6" Hex Cap Screws Grade L-9 Bolts USA Zinc Yellow SKU 21067 $38.04
Approved Vendor 3/4-10x1" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21212 $3.28
Approved Vendor 3/4-10x1" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21213 $4.97
Approved Vendor 3/4-10x1-1/2" Stainless Steel Hex Cap Screws Bolts SKU 1242 $5.94
Approved Vendor 3/4-10x1-1/2" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21216 $7.26
Approved Vendor 3/4-10x1-1/2" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21217 $3.53
Approved Vendor 3/4-10x1-1/2" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21218 $5.62
Approved Vendor 3/4-10x1-1/2" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21219 $4.80
Approved Vendor 3/4-10x1-1/4" Stainless Steel Hex Cap Screws Bolts SKU 1241 $5.65
Approved Vendor 3/4-10x1-1/4" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21220 $3.49
Approved Vendor 3/4-10x1-1/4" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21221 $5.37
Approved Vendor 3/4-10x1-1/4" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21222 $4.80
Approved Vendor 3/4-10x1-3/4" Stainless Steel Hex Cap Screws Bolts SKU 1243 $6.33
Approved Vendor 3/4-10x1-3/4" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21224 $7.94
Approved Vendor 3/4-10x1-3/4" Grade 8 Hex Flange Frame Bolts Zinc Yellow SKU 21225 $7.89
Approved Vendor 3/4-10x1-3/4" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21226 $3.51
Approved Vendor 3/4-10x1-3/4" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21227 $6.39
Approved Vendor 3/4-10x1-3/4" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21228 $5.22
Approved Vendor 3/4-10x10" Stainless Steel Hex Cap Screws Bolts SKU 1257 $25.99
Approved Vendor 3/4-10x10" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21229 $29.93
Approved Vendor 3/4-10x2" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21236 $10.26
Approved Vendor 3/4-10x2" Grade 8 Hex Flange Frame Bolts Zinc Yellow SKU 21237 $12.04
Approved Vendor 3/4-10x2" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21238 $3.49
Approved Vendor 3/4-10x2" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21239 $6.54
Approved Vendor 3/4-10x2" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21240 $4.88
Approved Vendor 3/4-10x2-1/2" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21244 $11.61
Approved Vendor 3/4-10x2-1/2" Grade 8 Hex Flange Frame Bolts Zinc Yellow SKU 21245 $13.61
Approved Vendor 3/4-10x2-1/2" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21247 $4.10
Approved Vendor 3/4-10x2-1/2" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21248 $7.67
Approved Vendor 3/4-10x2-1/2" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21249 $5.71
Approved Vendor 3/4-10x2-1/2" Stainless Steel Hex Cap Screws Bolts SKU 1246 $7.45
Approved Vendor 3/4-10x2-1/4" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21253 $10.92
Approved Vendor 3/4-10x2-1/4" Grade 8 Hex Flange Frame Bolts Zinc Yellow SKU 21254 $12.80
Approved Vendor 3/4-10x2-1/4" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21255 $3.89
Approved Vendor 3/4-10x2-1/4" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21256 $6.89
Approved Vendor 3/4-10x2-1/4" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21257 $5.52
Approved Vendor 3/4-10x2-1/4" Stainless Steel Hex Cap Screws Bolts SKU 1245 $6.95
Approved Vendor 3/4-10x2-3/4" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21260 $9.52
Approved Vendor 3/4-10x2-3/4" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21261 $4.96
Approved Vendor 3/4-10x2-3/4" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21262 $8.02

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