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 15

Approved Vendor 3/4-10x2-3/4" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21263 $6.13
Approved Vendor 3/4-10x2-3/4" Stainless Steel Hex Cap Screws Bolts SKU 1247 $8.20
Approved Vendor 3/4-10x3" Stainless Steel Hex Cap Screws Bolts SKU 1248 $8.67
Approved Vendor 3/4-10x3" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21267 $19.28
Approved Vendor 3/4-10x3" Grade 8 Hex Flange Frame Bolts Zinc Yellow SKU 21268 $15.19
Approved Vendor 3/4-10x3" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21270 $4.72
Approved Vendor 3/4-10x3" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21271 $8.80
Approved Vendor 3/4-10x3" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21272 $6.56
Approved Vendor 3/4-10x3" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 21273 $5.91
Approved Vendor 3/4-10x3-1/2" Stainless Steel Hex Cap Screws Bolts SKU 1249 $10.40
Approved Vendor 3/4-10x3-1/2" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21277 $10.86
Approved Vendor 3/4-10x3-1/2" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21279 $5.34
Approved Vendor 3/4-10x3-1/2" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21280 $9.96
Approved Vendor 3/4-10x3-1/2" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21281 $7.42
Approved Vendor 3/4-10x3-1/2" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 21282 $7.22
Approved Vendor 3/4-10x3-1/4" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21284 $11.15
Approved Vendor 3/4-10x3-1/4" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21285 $5.27
Approved Vendor 3/4-10x3-1/4" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21286 $9.64
Approved Vendor 3/4-10x3-1/4" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 21287 $7.14
Approved Vendor 3/4-10x3-3/4" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21288 $6.37
Approved Vendor 3/4-10x3-3/4" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21289 $10.72
Approved Vendor 3/4-10x4" Stainless Steel Hex Cap Screws Bolts SKU 1250 $10.68
Approved Vendor 3/4-10x4" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21292 $11.72
Approved Vendor 3/4-10x4" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21294 $6.22
Approved Vendor 3/4-10x4" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21295 $11.16
Approved Vendor 3/4-10x4" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21296 $8.32
Approved Vendor 3/4-10x4" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 21297 $8.11
Approved Vendor 3/4-10x4-1/2" Stainless Steel Hex Cap Screws Bolts SKU 1251 $12.13
Approved Vendor 3/4-10x4-1/2" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21298 $12.64
Approved Vendor 3/4-10x4-1/2" Hex Cap Screws Grade 5 Bolts Zinc Clear SKU 21299 $6.92
Approved Vendor 3/4-10x4-1/2" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21300 $12.30
Approved Vendor 3/4-10x4-1/2" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21301 $9.17
Approved Vendor 3/4-10x4-1/2" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 21302 $9.51
Approved Vendor 3/4-10x5" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21307 $13.68
Approved Vendor 3/4-10x5" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21309 $13.95
Approved Vendor 3/4-10x5" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21310 $10.16
Approved Vendor 3/4-10x5" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 21311 $9.76
Approved Vendor 3/4-10x5" Stainless Steel Hex Cap Screws Bolts SKU 1252 $13.20
Approved Vendor 3/4-10x5-1/2" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21312 $15.04
Approved Vendor 3/4-10x5-1/2" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21313 $12.01
Approved Vendor 3/4-10x5-1/2" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 21314 $11.28
Approved Vendor 3/4-10x5-1/2" Stainless Steel Hex Cap Screws Bolts SKU 1253 $11.46
Approved Vendor 3/4-10x6" Grade 8 Hex Flange Frame Bolts Phos & Oil SKU 21317 $15.25
Approved Vendor 3/4-10x6" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21319 $17.00
Brighton-Best 3/4-10x6" Hex Head Cap Screws Grade 8 Zinc Yellow SKU 21320 $12.62
Approved Vendor 3/4-10x6" Hex Tap Bolts Grade 5 Full Thread Zinc SKU 21321 $11.81
Approved Vendor 3/4-10x6-1/2" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21323 $19.43
Approved Vendor 3/4-10x7" Hex Head Cap Screws Grade 8 USA Zinc Yellow SKU 21327 $20.70

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