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 4

Approved Vendor 1/2-13x2 -1/2" Brass Hex Tap Bolts Full Thread SKU 15250 $19.65
Approved Vendor 1/2-13x2 Grade 8 Serrated Hex Flange Bolts Zinc Clear SKU 15251 $2.81
Approved Vendor 1/2-13x2" Grade 5 Serrated Hex Flange Bolts Zinc Yellow SKU 15252 $2.42
Approved Vendor 1/2-13x2" 18-8 Stainless Steel Serrated Hex Flange Bolts SKU 2104 $5.63
Approved Vendor 1/2-13x2" Brass Hex Tap Bolts Full Thread SKU 15260 $16.52
Approved Vendor 1/2-13x2" Grade 5 Hex Flange Bolts Zinc Clear SKU 15262 $2.84
Approved Vendor 1/2-13x2" Grade 5 Serrated Hex Flange Bolts Zinc Clear SKU 15264 $3.37
Approved Vendor 1/2-13x2" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 15265 $3.31
Approved Vendor 1/2-13x2" Grade 8 Hex Flange Frame Bolts Zinc Yellow SKU 15266 $4.07
Approved Vendor 1/2-13x2" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 15268 $1.32
Approved Vendor 1/2-13x2" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 15269 $2.55
Approved Vendor 1/2-13x2" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 15270 $1.87
Approved Vendor 1/2-13x2" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 15271 $1.65
Approved Vendor 1/2-13x2" Stainless Steel Hex Cap Screws Bolts SKU 1195 $2.55
Approved Vendor 1/2-13x2-1/2" 18-8 Stainless Steel Serrated Hex Flange Bolts SKU 2106 $6.37
Approved Vendor 1/2-13x2-1/2" Grade 5 Hex Flange Bolts Zinc Clear SKU 15280 $3.27
Approved Vendor 1/2-13x2-1/2" Grade 5 Serrated Hex Flange Bolts Zinc Clear SKU 15282 $3.49
Approved Vendor 1/2-13x2-1/2" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 15283 $4.28
Approved Vendor 1/2-13x2-1/2" Grade 8 Hex Flange Frame Bolts Zinc Yellow SKU 15284 $4.99
Approved Vendor 1/2-13x2-1/2" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 15286 $1.58
Approved Vendor 1/2-13x2-1/2" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 15287 $3.02
Approved Vendor 1/2-13x2-1/2" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 15288 $2.21
Approved Vendor 1/2-13x2-1/2" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 15289 $1.94
Approved Vendor 1/2-13x2-1/2" Stainless Steel Hex Cap Screws Bolts SKU 1197 $3.00
Approved Vendor 1/2-13x2-1/4" 18-8 Stainless Steel Serrated Hex Flange Bolts SKU 2105 $6.23
Approved Vendor 1/2-13x2-1/4" Brass Hex Tap Bolts Full Thread SKU 15296 $14.23
Approved Vendor 1/2-13x2-1/4" Grade 5 Hex Flange Bolts Zinc Clear SKU 15298 $2.97
Approved Vendor 1/2-13x2-1/4" Grade 5 Serrated Hex Flange Bolts Zinc Clear SKU 15299 $2.47
Approved Vendor 1/2-13x2-1/4" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 15300 $3.98
Approved Vendor 1/2-13x2-1/4" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 15301 $1.51
Approved Vendor 1/2-13x2-1/4" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 15302 $2.85
Approved Vendor 1/2-13x2-1/4" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 15303 $2.15
Approved Vendor 1/2-13x2-1/4" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 15304 $1.87
Approved Vendor 1/2-13x2-3/4" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 15307 $4.85
Approved Vendor 1/2-13x2-3/4" Grade 8 Hex Flange Frame Bolts Zinc Yellow SKU 15308 $5.70
Approved Vendor 1/2-13x2-3/4" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 15309 $1.87
Approved Vendor 1/2-13x2-3/4" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 15310 $3.35
Approved Vendor 1/2-13x2-3/4" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 15311 $2.65
Approved Vendor 1/2-13x2-3/4" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 15312 $2.32
Approved Vendor 1/2-13x2-3/4" Stainless Steel Hex Cap Screws Bolts SKU 1198 $3.40
Approved Vendor 1/2-13x3" Brass Hex Tap Bolts Full Thread SKU 15321 $23.20
Approved Vendor 1/2-13x3" Grade 5 Serrated Hex Flange Bolts Zinc Clear SKU 15324 $4.23
Approved Vendor 1/2-13x3" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 15325 $5.00
Approved Vendor 1/2-13x3" Grade 8 Hex Flange Frame Bolts Zinc Yellow SKU 15326 $5.88
Approved Vendor 1/2-13x3" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 15328 $1.88
Approved Vendor 1/2-13x3" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 15329 $3.53
Approved Vendor 1/2-13x3" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 15330 $2.59
Approved Vendor 1/2-13x3" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 15331 $2.36

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