Grade 8 Hex Head Bolt for Automotive UNC Black Oxide 10B21 Steel ASME B18.2.1

Hex Head Bolt manufactured in 10B21 Carbon Steel to ASME B18.2.1. Choose a size and length below, then send your quantity and documentation requirements for quotation.

Material: 10B21 Carbon Steel
Thread series: UNC
Finish: Black Oxide
Drive: External Hex

Quoted to orderSend one complete specification.

Size · length · quantity · finish · delivery target

Nominal thread

Length

Quantity

SKU HHB-10B21-G8-UNC-1-4-20X8

Catalog recordHF-P0178-UNC

Thread systemUNC

Configurations36

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

1/4-201/4 · 20 TPI

8 in5 in3 in1 in6 in7 in2 in1/2 in3/8 in

3/8-163/8 · 16 TPI

8 in5 in3 in1 in6 in7 in2 in1/2 in3/8 in

1/2-131/2 · 13 TPI

8 in5 in3 in1 in6 in7 in2 in1/2 in3/8 in

3/4-103/4 · 10 TPI

8 in5 in3 in1 in6 in7 in2 in1/2 in3/8 in

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-P0178-UNC
Product type: Hex Head Bolt
Material: 10B21 Carbon Steel
Standard: ASME B18.2.1
Grade / class: Grade 8
Finish: Black Oxide
Thread series: UNC
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

Grade 8 Hex Head Bolt for Automotive UNC Black Oxide 10B21 Steel ASME B18.2.1

10B21 Steel Hex Head Bolt UNC Black Oxide Grade 8 ASME B18.2.1 Fine Finish

UNC Grade 8 Hex Head Bolt Black Oxide B7 Steel Length for High Vibration

ASME 18.2.1 UNC 7/8-97/16 Inch Black Zinc Black Oxide Steel Grade 8 Hexagon Head Bolt Hex Head Bolts

Specify it once. Quote it correctly.