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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 — 5/16-18 UNC Hex Head Bolt 316L Stainless Steel Natural Finish A4-80 Coarse Thread Hex Bolt for Machinery
5/16-18

UNC Hex Head Bolt 316L Stainless Steel Natural Finish A4-80 Coarse Thread Hex Bolt for Machinery

$0.00
UNC Hex Head Bolt 316L Stainless Steel Natural Finish A4-80 Coarse Thread Hex Bolt for Machinery Material: 316L Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNC...
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Hex Head Bolt — Natural Stainless Steel Hexagon Head Bolt 316 SS UNC 1/2-13 7/8-9 1-8 Plain Finish A4-70 ASME B18.2.1
1/2-137/8-91-8

Natural Stainless Steel Hexagon Head Bolt 316 SS UNC Plain Finish A4-70 ASME B18.2.1

$0.00
Natural Stainless Steel Hexagon Head Bolt 316 SS UNC Plain Finish A4-70 ASME B18.2.1 Material: 316 Stainless Steel Grade / Class: A4-70 Standards: ASME B18.2.1 Thread Series: UNC Finish /...
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Hex Head Bolt — 7/8-9 UNC Hex Head Bolt 316L Stainless Steel Plain Finish A4-80 Large Diameter Full Thread Hexagon Bolt
7/8-9

UNC Hex Head Bolt 316L Stainless Steel Plain Finish A4-80 Large Diameter Full Thread Hexagon Bolt

$0.00
UNC Hex Head Bolt 316L Stainless Steel Plain Finish A4-80 Large Diameter Full Thread Hexagon Bolt Material: 316L Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNC...
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Hex Head Bolt — ANSI B18.2.1 Hex Head Bolt UNF Fine Thread 10#-32 316L Stainless Steel Natural Finish A4-80 High Tensile
#10-32

316L Stainless Steel Hex Head Bolt UNF A4-80 ASME B18.2.1 Fine Thread

$0.00
316L Stainless Steel Hex Head Bolt UNF A4-80 ASME B18.2.1 Fine Thread Material: 316L Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNF Finish / Coating: Plain...
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Hex Head Bolt — 316L Stainless Steel Hex Head Bolt UNC UNF 10#-32 1/4-20 3/8-16 1/2-13 7/8-9 Natural Finish A4-80 Marine Grade
#10-321/4-203/8-161/2-137/8-9

316L Stainless Steel Hex Head Bolt UNC UNF Natural Finish A4-80 Marine Grade

$0.00
316L Stainless Steel Hex Head Bolt UNC UNF Natural Finish A4-80 Marine Grade Material: 316L Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNC, UNF Finish /...
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Hex Head Bolt — UNC Coarse Thread Hex Bolt 316 SS ASME B18.2.1 Sizes 5/16-18 3/8-16 1/2-13 7/8-9 Plain Finish A4-80
5/16-183/8-161/2-137/8-9

UNC Coarse Thread Hex Bolt 316 SS ASME B18.2.1 Sizes Plain Finish A4-80

$0.00
UNC Coarse Thread Hex Bolt 316 SS ASME B18.2.1 Sizes Plain Finish A4-80 Material: 316 Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNC Finish / Coating:...
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Hex Head Bolt — 316 Stainless Steel Hex Head Bolt 316L Equivalent UNF 10#-32 UNC 3/8-16 1/2-13 A4-80 Plain Finish Corrosion Resistant
#10-323/8-161/2-13

316 Stainless Steel Hex Head Bolt 316L Equivalent UNF UNC A4-80 Plain Finish Corrosion Resistant

$0.00
316 Stainless Steel Hex Head Bolt 316L Equivalent UNF UNC A4-80 Plain Finish Corrosion Resistant Material: 316 Stainless Steel Grade / Class: A4-80 Thread Series: UNC, UNF Finish / Coating:...
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Hex Head Bolt — ASTM A193 Grade B8M 316 Stainless Steel Hex Bolt UNC 1/2-13 3/4-10 1-8 Plain Finish High Strength Hex Head Bolt
1/2-133/4-101-8

ASTM A193 Grade B8M 316 Stainless Steel Hex Bolt UNC Plain Finish High Strength Hex Head Bolt

$0.00
ASTM A193 Grade B8M 316 Stainless Steel Hex Bolt UNC Plain Finish High Strength Hex Head Bolt Material: 316 Stainless Steel Grade / Class: ASTM A193 B8M Standards: ASTM A193...
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Hex Head Bolt — Marine Grade Hex Head Bolt 316 Stainless Steel UNC 1/4-20 to 1-8 Plain Finish A4-80 for Offshore Equipment
1/4-201-8

Marine Grade Hex Head Bolt 316 Stainless Steel UNC Plain Finish A4-80 for Offshore Equipment

$0.00
Marine Grade Hex Head Bolt 316 Stainless Steel UNC Plain Finish A4-80 for Offshore Equipment Material: 316 Stainless Steel Grade / Class: A4-80 Thread Series: UNC Finish / Coating: Plain...
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Hex Head Bolt — 1-8 UNC Hexagon Head Bolt 316 Stainless Steel Natural Finish A4-80 Heavy Duty Hex Bolt for Structural Use
1-8

UNC Hexagon Head Bolt 316 Stainless Steel Natural Finish A4-80 Heavy Duty Hex Bolt for Structural Use

$0.00
UNC Hexagon Head Bolt 316 Stainless Steel Natural Finish A4-80 Heavy Duty Hex Bolt for Structural Use Material: 316 Stainless Steel Grade / Class: A4-80 Thread Series: UNC Finish /...
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Hex Head Bolt — 316 SS Hexagon Head Bolt for Chemical Plant UNC 3/8-16 1/2-13 7/8-9 Natural Finish A4-80 Corrosion Resistant
3/8-161/2-137/8-9

316 SS Hexagon Head Bolt for Chemical Plant UNC Natural Finish A4-80 Corrosion Resistant

$0.00
316 SS Hexagon Head Bolt for Chemical Plant UNC Natural Finish A4-80 Corrosion Resistant Material: 316 Stainless Steel Grade / Class: A4-80 Thread Series: UNC Finish / Coating: Plain
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Hex Head Bolt — ASME B18.2.1 UNC Hexagon Head Bolt 316 Stainless Steel 1/4-20 to 1-8 Plain Finish A4-80 Full Thread Hex Bolt
1/4-201-8

ASME B18.2.1 UNC Hexagon Head Bolt 316 Stainless Steel Plain Finish A4-80 Full Thread Hex Bolt

$0.00
ASME B18.2.1 UNC Hexagon Head Bolt 316 Stainless Steel Plain Finish A4-80 Full Thread Hex Bolt Material: 316 Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNC...
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Hex Head Bolt — High Tensile A4-80 Hex Bolt 316 Stainless Steel ASME B18.2.1 UNC 1/2-13 3/4-10 1-8 Plain Finish Heavy Duty
1/2-133/4-101-8

High Tensile A4-80 Hex Bolt 316 Stainless Steel ASME B18.2.1 UNC Plain Finish Heavy Duty

$0.00
High Tensile A4-80 Hex Bolt 316 Stainless Steel ASME B18.2.1 UNC Plain Finish Heavy Duty Material: 316 Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNC Finish...
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Hex Head Bolt — 1/4-20 UNC Hexagon Head Bolt 316 Stainless Steel Plain Finish A4-80 ASME B18.2.1 Full Thread
1/4-20

UNC Hexagon Head Bolt 316 Stainless Steel Plain Finish A4-80 ASME B18.2.1 Full Thread

$0.00
UNC Hexagon Head Bolt 316 Stainless Steel Plain Finish A4-80 ASME B18.2.1 Full Thread Material: 316 Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNC Finish /...
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Hex Head Bolt — 1/2-13 UNC Hex Head Bolt 316 Stainless Steel Natural Finish A4-80 ASME B18.2.1 Heavy Duty Hex Bolt
1/2-13

UNC Hex Head Bolt 316 Stainless Steel Natural Finish A4-80 ASME B18.2.1 Heavy Duty Hex Bolt

$0.00
UNC Hex Head Bolt 316 Stainless Steel Natural Finish A4-80 ASME B18.2.1 Heavy Duty Hex Bolt Material: 316 Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNC...
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Hex Head Bolt — 316 Stainless Steel Hexagon Head Bolt ASME B18.2.1 UNC 1/4-20 5/16-18 3/8-16 1/2-13 7/8-9 1-8 Plain Finish A4-80 Full Thread
1/4-205/16-183/8-161/2-137/8-91-8

316 Stainless Steel Hexagon Head Bolt ASME B18.2.1 UNC Plain Finish A4-80 Full Thread

$0.00
316 Stainless Steel Hexagon Head Bolt ASME B18.2.1 UNC Plain Finish A4-80 Full Thread Material: 316 Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNC Finish /...
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Hex Head Bolt — 7/8-9 UNC Hex Head Bolt 316 Stainless Steel Plain Finish A4-70 Large Diameter Hexagon Bolt
7/8-9

UNC Hex Head Bolt 316 Stainless Steel Plain Finish A4-70 Large Diameter Hexagon Bolt

$0.00
UNC Hex Head Bolt 316 Stainless Steel Plain Finish A4-70 Large Diameter Hexagon Bolt Material: 316 Stainless Steel Grade / Class: A4-70 Thread Series: UNC Finish / Coating: Plain
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Hex Head Bolt — 10#-32 UNF Hex Head Bolt 316 Stainless Steel Plain Finish A4-80 ASME B18.2.1 Fine Thread Precision Hex Bolt
#10-32

UNF Hex Head Bolt 316 Stainless Steel Plain Finish A4-80 ASME B18.2.1 Fine Thread Precision Hex Bolt

$0.00
UNF Hex Head Bolt 316 Stainless Steel Plain Finish A4-80 ASME B18.2.1 Fine Thread Precision Hex Bolt Material: 316 Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series:...
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Hex Head Bolt — UNF Fine Thread Hexagon Head Bolt 316 Stainless Steel 10#-32 Natural Finish A4-80 ASME B18.2.1 Precision Fastener
#10-32

UNF Fine Thread Hexagon Head Bolt 316 Stainless Steel Natural Finish A4-80 ASME B18.2.1 Precision Fastener

$0.00
UNF Fine Thread Hexagon Head Bolt 316 Stainless Steel Natural Finish A4-80 ASME B18.2.1 Precision Fastener Material: 316 Stainless Steel Grade / Class: A4-80 Standards: ASME B18.2.1 Thread Series: UNF...
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Hex Head Bolt — ASME ANSI Certified 304 Stainless Steel Hexagon Head Bolts UNC 4# 6# 8# 10# Sizes 1/4-20 3/8-16 5/16-18 1/2-13 5/8-11 Bolts
1/4-205/16-183/8-161/2-135/8-11#4-40#6-32#8-32#10-24

304 Stainless Steel Hex Head Bolt UNC ASME

$0.00
304 Stainless Steel Hex Head Bolt UNC ASME Material: 304 Stainless Steel Standards: ASME Thread Series: UNC Finish / Coating: Plain
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Hex Head Bolt — Plain Finish Hex Head Bolt 304 Stainless Steel UNC 1/4-20 5/16-18 3/8-16 1/2-13 7/8-9 A2-70
1/4-205/16-183/8-161/2-137/8-9

Plain Finish Hex Head Bolt 304 Stainless Steel UNC A2-70

$0.00
Plain Finish Hex Head Bolt 304 Stainless Steel UNC A2-70 Material: 304 Stainless Steel Grade / Class: A2-70 Thread Series: UNC Finish / Coating: Plain
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Hex Head Bolt — 316 Stainless Steel Hex Head Bolt UNC 1/2-13 7/8-9 1-8 Natural Finish A4-70 Marine Grade Hexagon Bolt
1/2-137/8-91-8

316 Stainless Steel Hex Head Bolt UNC Natural Finish A4-70 Marine Grade Hexagon Bolt

$0.00
316 Stainless Steel Hex Head Bolt UNC Natural Finish A4-70 Marine Grade Hexagon Bolt Material: 316 Stainless Steel Grade / Class: A4-70 Thread Series: UNC Finish / Coating: Plain
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Hex Head Bolt — Corrosion Resistant Hex Head Bolt 316 SS UNC 3/8-16 1/2-13 7/8-9 Natural Finish A4-70 for Chemical Plant
3/8-161/2-137/8-9

Corrosion Resistant Hex Head Bolt 316 SS UNC Natural Finish A4-70 for Chemical Plant

$0.00
Corrosion Resistant Hex Head Bolt 316 SS UNC Natural Finish A4-70 for Chemical Plant Material: 316 Stainless Steel Grade / Class: A4-70 Thread Series: UNC Finish / Coating: Plain
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Hex Head Bolt — ASME B18.2.1 UNC Hexagon Head Bolt 304 Stainless Steel 1/4-20 5/16-18 3/8-16 1/2-13 1-8 Plain Finish A2-70
1/4-205/16-183/8-161/2-131-8

ASME B18.2.1 UNC Hexagon Head Bolt 304 Stainless Steel Plain Finish A2-70

$0.00
ASME B18.2.1 UNC Hexagon Head Bolt 304 Stainless Steel Plain Finish A2-70 Material: 304 Stainless Steel Grade / Class: A2-70 Standards: ASME B18.2.1 Thread Series: UNC Finish / Coating: Plain...
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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.

Request a Quote