HF-P0251-UNFRFQ only

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

Product visual referenceDimensions confirmed with quotation

ASME B18.2.1 · Grade 5

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

Hex Head Bolt manufactured in Carbon Steel to ASME B18.2.1. Choose a size and length below, then send your quantity and documentation requirements for quotation.

Material: Carbon Steel
Thread series: UNF
Finish: Zinc Plated
Drive: External Hex

Quoted to orderSend one complete specification.

Size · length · quantity · finish · delivery target

Nominal thread

Length

Quantity

SKU HHB-CS-G5-UNF-1-4-28X16

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Catalog recordHF-P0251-UNF

Thread systemUNF

Configurations54

Supply modeMade to specification

Sizes & configurations

Choose diameter and length.

Browse the listed sizes. Where no length is listed, include the required overall length with your RFQ. Thread details and dimensions are confirmed during quotation.

Nominal threadRecorded lengthsRows

1/4-281/4 · 28 TPI

16 in20 in18 in8 in5 in3 in1 in6 in9 in

9

3/8-243/8 · 24 TPI

16 in20 in18 in8 in5 in3 in1 in6 in9 in

9

1/2-201/2 · 20 TPI

16 in20 in18 in8 in5 in3 in1 in6 in9 in

9

3/4-163/4 · 16 TPI

16 in20 in18 in8 in5 in3 in1 in6 in9 in

9

7/8-147/8 · 14 TPI

16 in20 in18 in8 in5 in3 in1 in6 in9 in

9

7/16-207/16 · 20 TPI

16 in20 in18 in8 in5 in3 in1 in6 in9 in

9

Need a size not shown? Send the standard, thread designation and drawing. Custom and non-standard configurations are reviewed individually.

Technical dossier

Specification at a glance.

Use these specifications for product selection. Final tolerances, dimensions and inspection requirements are confirmed before production.

Product code: HF-P0251-UNF
Product type: Hex Head Bolt
Material: Carbon Steel
Standard: ASME B18.2.1
Grade / class: Grade 5
Finish: Zinc Plated
Thread series: UNF
Drive type: External Hex

Engineering review before quotation

Specify it once. Quote it correctly.

Send the size, length, quantity and any drawing or inspection requirement. We will confirm manufacturability, MOQ and lead time before you commit.

Request a Quote Send Drawing