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Hex Bolts

Hex head bolts to ASME B18.2.1 in UNC and UNF threads, from #4 up to 1-1/2 in. The range covers Grade 5 and Grade 8 steel (10B21, 35CrMo), 304 and 316 stainless in A2-70 / A4-80, and titanium Grades 2–5, with plain, zinc plated, yellow zinc, black oxide, black zinc and hot-dip galvanized finishes. Structural, machinery and automotive specifications including ASTM A325 and A193 are supported — send your standard, size and quantity for a quote.

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Hex Head Bolt — ASME B18.2.1 UNF Hexagon Head Bolt Grade 5 Zinc Plated Carbon Steel 1/4-28 3/8-24 1/2-20 3/4-16 7/8-14
1/4-283/8-241/2-203/4-167/8-14

ASME B18.2.1 UNF Hexagon Head Bolt Grade 5 Zinc Plated Carbon Steel

$0.00
ASME B18.2.1 UNF Hexagon Head Bolt Grade 5 Zinc Plated Carbon Steel Material: Carbon Steel Grade / Class: Grade 5 Standards: ASME B18.2.1 Thread Series: UNF Finish / Coating: Zinc...
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Hex Head Bolt — Grade5 Yellow Zinc Hex Bolt UNC 1/4-20 3/8-16 1/2-13 C/Steel Half Thread ASME B18.2.1 Carbon Steel 1-1/2-6 1-1/4-7 1-8 7/8-9
1/4-203/8-161/2-131-1/2-61-1/4-71-87/8-9

Grade5 Yellow Zinc Hex Bolt UNC C/Steel Half Thread ASME B18.2.1 Carbon Steel

$0.00
Grade5 Yellow Zinc Hex Bolt UNC C/Steel Half Thread ASME B18.2.1 Carbon Steel Material: Carbon Steel Grade / Class: Grade 5 Standards: ASME B18.2.1 Thread Series: UNC Finish / Coating:...
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Hex Head Bolt — ASME B18.2.1 Grade 5 Hex Head Bolt UNF 1/2-20 Zinc Plated Carbon Steel 1.5 Inch Length Hexagon Bolt
1/2-20

ASME B18.2.1 Grade 5 Hex Head Bolt UNF Zinc Plated Carbon Steel Length Hexagon Bolt

$0.00
ASME B18.2.1 Grade 5 Hex Head Bolt UNF Zinc Plated Carbon Steel Length Hexagon Bolt Material: Carbon Steel Grade / Class: Grade 5 Standards: ASME B18.2.1 Thread Series: UNF Finish...
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Hex Head Bolt — Electro-Galvanized Hex Head Bolt UNF 1/4-28 3/8-24 1/2-20 3/4-16 7/8-14 Grade 5 Carbon Steel ASME B18.2.1
1/4-283/8-241/2-203/4-167/8-14

Electro-Galvanized Hex Head Bolt UNF Grade 5 Carbon Steel ASME B18.2.1

$0.00
Electro-Galvanized Hex Head Bolt UNF Grade 5 Carbon Steel ASME B18.2.1 Material: Carbon Steel Grade / Class: Grade 5 Standards: ASME B18.2.1 Thread Series: UNF Finish / Coating: Zinc Plated...
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Hex Head Bolt — Yellow Zinc Plated Grade 5 Hex Head Bolt UNF 3/8-24 1/2-20 7/16-20 3/4-16 Carbon Steel ASME B18.2.1
3/8-241/2-207/16-203/4-16

Yellow Zinc Plated Grade 5 Hex Head Bolt UNF Carbon Steel ASME B18.2.1

$0.00
Yellow Zinc Plated Grade 5 Hex Head Bolt UNF Carbon Steel ASME B18.2.1 Material: Carbon Steel Grade / Class: Grade 5 Standards: ASME B18.2.1 Thread Series: UNF Finish / Coating:...
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Hex Head Bolt — 7/8-9 UNC Hex Head Bolt Grade 8 Black Zinc B7 Alloy Steel Large Diameter Coarse Thread Hex Bolt
7/8-9

UNC Hex Head Bolt Grade 8 Black Zinc B7 Alloy Steel Large Diameter Coarse Thread Hex Bolt

$0.00
UNC Hex Head Bolt Grade 8 Black Zinc B7 Alloy Steel Large Diameter Coarse Thread Hex Bolt Material: Alloy Steel Grade / Class: Grade 8, ASTM A193 B7 Standards: ASME...
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Hex Head Bolt — CL8.8 Yellow Zinc Hex Head Bolt UNC 1/2-13 5/8-11 3/4-10 Carbon Steel 1/2 Thd ASME 18.2.1 1-8 1-1/2-6 1-5/8-8 1-1/4-7 Unc
1/2-135/8-113/4-101-81-1/2-61-5/8-81-1/4-7

CL8.8 Yellow Zinc Hex Head Bolt UNC Carbon Steel Thd ASME 18.2.1 Unc

$0.00
CL8.8 Yellow Zinc Hex Head Bolt UNC Carbon Steel Thd ASME 18.2.1 Unc Material: Carbon Steel Grade / Class: Grade 8.8 Standards: ASME B18.2.1 Thread Series: UNC Finish / Coating:...
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Hex Head Bolt — Class8.8 YelZn Hex Head Bolt UNC 1/2-13 5/8-11 3/4-10 7/8-9 C/Steel Half Thread ASME Carbon Steel ASME B18.2.1
1/2-135/8-113/4-107/8-9

Class8.8 YelZn Hex Head Bolt UNC C/Steel Half Thread ASME Carbon Steel ASME B18.2.1

$0.00
Class8.8 YelZn Hex Head Bolt UNC C/Steel Half Thread ASME Carbon Steel ASME B18.2.1 Material: Carbon Steel Grade / Class: Grade 8.8 Standards: ASME B18.2.1 Thread Series: UNC Finish /...
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Hex Head Bolt — ASME B18.2.1 Grade 8 Hexagon Head Bolt UNC 1/4-20 3/8-16 1/2-13 3/4-10 7/8-9 7/16-14 Black Oxide B7 Alloy Steel Hex Bolt
1/4-203/8-161/2-133/4-107/8-97/16-14

ASME B18.2.1 Grade 8 Hexagon Head Bolt UNC Black Oxide B7 Alloy Steel Hex Bolt

$0.00
ASME B18.2.1 Grade 8 Hexagon Head Bolt UNC Black Oxide B7 Alloy Steel Hex Bolt Material: Alloy Steel Grade / Class: Grade 8, ASTM A193 B7 Standards: ASME B18.2.1 Thread...
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Hex Head Bolt — Combination UNC & UNF Hexagon Head Bolt 304 Stainless 10#-32 1/4-20 5/16-18 3/8-16 1/2-13 Plain Finish A2-70
#10-321/4-205/16-183/8-161/2-13

Combination UNC & UNF Hexagon Head Bolt 304 Stainless Plain Finish A2-70

$0.00
Combination UNC & UNF Hexagon Head Bolt 304 Stainless Plain Finish A2-70 Material: 304 Stainless Steel Grade / Class: A2-70 Thread Series: UNC, UNF Finish / Coating: Plain
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Hex Head Bolt — Grade A4-80 Hex Head Bolt 316L SS UNC UNF 10#-32 to 1-8 Natural Finish Full Thread Corrosion Resistant
#10-321-8

Grade A4-80 Hex Head Bolt 316L SS UNC UNF Natural Finish Full Thread Corrosion Resistant

$0.00
Grade A4-80 Hex Head Bolt 316L SS UNC UNF Natural Finish Full Thread Corrosion Resistant Material: 316L Stainless Steel Grade / Class: A4-80 Thread Series: UNC, UNF Finish / Coating:...
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Hex Head Bolt — 1/4-20 UNC Hex Head Bolt Grade 8 Black Oxide B7 Alloy Steel ASME B18.2.1 Coarse Thread Hexagon Bolt
1/4-20

UNC Hex Head Bolt Grade 8 Black Oxide B7 Alloy Steel ASME B18.2.1 Coarse Thread Hexagon Bolt

$0.00
UNC Hex Head Bolt Grade 8 Black Oxide B7 Alloy Steel ASME B18.2.1 Coarse Thread Hexagon Bolt Material: Alloy Steel Grade / Class: Grade 8, ASTM A193 B7 Standards: ASME...
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Hex Head Bolt — Uncoated Hex Head Bolt 304 Stainless UNC 3/8-16 1/2-13 5/16-18 Plain Finish A2-70 Corrosion Resistant
3/8-161/2-135/16-18

Uncoated Hex Head Bolt 304 Stainless UNC Plain Finish A2-70 Corrosion Resistant

$0.00
Uncoated Hex Head Bolt 304 Stainless UNC Plain Finish A2-70 Corrosion Resistant Material: 304 Stainless Steel Grade / Class: A2-70 Thread Series: UNC Finish / Coating: Plain
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Hex Head Bolt — 316 Stainless Hex Bolt UNC 3/8-16 1/2-13 7/8-9 Natural Finish A4-70 High Corrosion Resistance ASME B18.2.1
3/8-161/2-137/8-9

316 Stainless Hex Bolt UNC Natural Finish A4-70 High Corrosion Resistance ASME B18.2.1

$0.00
316 Stainless Hex Bolt UNC Natural Finish A4-70 High Corrosion Resistance ASME B18.2.1 Material: 316 Stainless Steel Grade / Class: A4-70 Standards: ASME B18.2.1 Thread Series: UNC Finish / Coating:...
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Hex Head Bolt — ASME B18.2.1 304 Stainless Hex Head Bolt UNC 1/2-13 x 2 Inch Plain Finish A2-70 Full Thread Hex Bolt
1/2-13

ASME B18.2.1 304 Stainless Hex Head Bolt UNC Plain Finish A2-70 Full Thread Hex Bolt

$0.00
ASME B18.2.1 304 Stainless Hex Head Bolt UNC Plain Finish A2-70 Full Thread Hex Bolt Material: 304 Stainless Steel Grade / Class: A2-70 Standards: ASME B18.2.1 Thread Series: UNC Finish...
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Hex Head Bolt — Combination UNC & UNF Hexagon Head Bolt 304 Stainless 10#-32 1/4-20 5/16-18 3/8-16 1/2-13 Plain Finish A2-70
#10-321/4-205/16-183/8-161/2-13

Combination UNC & UNF Hexagon Head Bolt 304 Stainless Plain Finish A2-70

$0.00
Combination UNC & UNF Hexagon Head Bolt 304 Stainless Plain Finish A2-70 Material: 304 Stainless Steel Grade / Class: A2-70 Thread Series: UNC, UNF Finish / Coating: Plain
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Hex Head Bolt — A2-70 304 Stainless Hex Head Bolt Full Thread UNC 1/4-20 5/16-18 3/8-16 1/2-13 Natural Finish ASME B18.2.1
1/4-205/16-183/8-161/2-13

A2-70 304 Stainless Hex Head Bolt Full Thread UNC Natural Finish ASME B18.2.1

$0.00
A2-70 304 Stainless Hex Head Bolt Full Thread UNC Natural Finish ASME B18.2.1 Material: 304 Stainless Steel Grade / Class: A2-70 Standards: ASME B18.2.1 Thread Series: UNC Finish / Coating:...
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Hex Head Bolt — Grade 8 Hex Bolt UNC 3/4-10 7/8-9 Black Zinc 45# Carbon Steel Large Diameter Coarse Thread
3/4-107/8-9

Grade 8 Hex Bolt UNC Black Zinc 45# Carbon Steel Large Diameter Coarse Thread

$0.00
Grade 8 Hex Bolt UNC Black Zinc 45# Carbon Steel Large Diameter Coarse Thread Material: 45# Carbon Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC Finish...
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Hex Head Bolt — Hexagon Head Bolt for Heavy Machinery UNC 1/2-13 3/4-10 7/8-9 Black Zinc Grade 8 35CrMo Alloy Steel
1/2-133/4-107/8-9

Hexagon Head Bolt for Heavy Machinery UNC Black Zinc Grade 8 35CrMo Alloy Steel

$0.00
Hexagon Head Bolt for Heavy Machinery UNC Black Zinc Grade 8 35CrMo Alloy Steel Material: 35CrMo Alloy Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC Finish...
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Hex Head Bolt — 7/16-14 UNC Hex Head Bolt Grade 8 Black Oxide 45# Carbon Steel ASME B18.2.1 Coarse Thread Hex Bolt
7/16-14

UNC Hex Head Bolt Grade 8 Black Oxide 45# Carbon Steel ASME B18.2.1 Coarse Thread Hex Bolt

$0.00
UNC Hex Head Bolt Grade 8 Black Oxide 45# Carbon Steel ASME B18.2.1 Coarse Thread Hex Bolt Material: 45# Carbon Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread...
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Hex Head Bolt — 3/4-10 UNC Hexagon Head Bolt Grade 8 Black Oxide 35# Carbon Steel Heavy Duty Hex Bolt
3/4-10

UNC Hexagon Head Bolt Grade 8 Black Oxide 35# Carbon Steel Heavy Duty Hex Bolt

$0.00
UNC Hexagon Head Bolt Grade 8 Black Oxide 35# Carbon Steel Heavy Duty Hex Bolt Material: 35# Carbon Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC...
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Hex Head Bolt — ASME B18.2.1 Grade 8 Hex Head Bolt UNC 1/2-13 X 2 Inch Black Oxide 35CrMo Alloy Steel Hex Bolt
1/2-13

ASME B18.2.1 Grade 8 Hex Head Bolt UNC Black Oxide 35CrMo Alloy Steel Hex Bolt

$0.00
ASME B18.2.1 Grade 8 Hex Head Bolt UNC Black Oxide 35CrMo Alloy Steel Hex Bolt Material: 35CrMo Alloy Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC...
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Hex Head Bolt — 35# Carbon Steel Hex Head Bolt UNC 1/4-20 3/8-16 1/2-13 7/16-14 Black Oxide Grade 8 General Use Hex Bolt
1/4-203/8-161/2-137/16-14

35# Carbon Steel Hex Head Bolt UNC Black Oxide Grade 8 General Use Hex Bolt

$0.00
35# Carbon Steel Hex Head Bolt UNC Black Oxide Grade 8 General Use Hex Bolt Material: 35# Carbon Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC...
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Hex Head Bolt — 35CrMo Alloy Steel Hex Head Bolt UNC 1/4-20 3/8-16 1/2-13 3/4-10 7/8-9 Black Oxide Grade 8 ASME B18.2.1
1/4-203/8-161/2-133/4-107/8-9

35CrMo Alloy Steel Hex Head Bolt UNC Black Oxide Grade 8 ASME B18.2.1

$0.00
35CrMo Alloy Steel Hex Head Bolt UNC Black Oxide Grade 8 ASME B18.2.1 Material: 35CrMo Alloy Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC Finish /...
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Buying Guide

Common Questions

What information do you need to quote this series?

Share the standard, thread size, length, material, grade, finish and quantity. For non-standard parts, a drawing or sample helps us confirm production details faster.

Can you make sizes or materials not listed here?

Yes. We manufacture to drawing and to sample. Send your specification through the RFQ form and we will confirm feasibility, MOQ and lead time.

What inspection and material documents can you provide?

Material test certificates, dimensional inspection reports and coating reports are available on request, depending on the material and finish of your order.

What is the MOQ, and can I get samples first?

MOQ depends on size, material and finish — standard catalog sizes start lower, and custom parts are quoted per drawing. Samples are available for most standard items; mention sampling when you send the RFQ and we will confirm.

How long does production and delivery take?

Lead time is confirmed per order with your quotation. Coated and custom parts need additional production and surface-treatment time. Share your target delivery date in the RFQ and we will confirm whether we can meet it before you commit.

Can't find the exact spec?

We manufacture standard and custom fasteners to order. Tell us the size, material, grade, finish and quantity — or send your drawing — and we will confirm MOQ and lead time.

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