HF-P0136-UNCRFQ only

Socket Head Cap Screw — 40CrMo High Tensile Socket Head Cap Screw Grade 12.9 Black Oxide ASME B18.3 Allen Bolt 1/4-20 3/8-16 5/16-18 1/2-13 7/8-9

Product visual referenceDimensions confirmed with quotation

ASME B18.3 · Grade 12.9

40CrMo High Tensile Socket Head Cap Screw Grade 12.9 Black Oxide ASME B18.3 Allen Bolt — UNC

Socket Head Cap Screw manufactured in 40CrMo Alloy Steel to ASME B18.3. Choose a size and length below, then send your quantity and documentation requirements for quotation.

Material: 40CrMo Alloy Steel
Thread series: UNC
Finish: Black Oxide
Drive: Hex Socket

Quoted to orderSend one complete specification.

Size · length · quantity · finish · delivery target

Nominal thread

Length

Quantity

SKU SHCS-40CRM-G129-UNC-1-4-20X3-8

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Catalog recordHF-P0136-UNC

Thread systemUNC

Configurations45

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

3/8 in5/8 in3/4 in7/8 in1 in1-1/4 in1-1/2 in1-3/4 in2 in

9

3/8-163/8 · 16 TPI

3/8 in5/8 in3/4 in7/8 in1 in1-1/4 in1-1/2 in1-3/4 in2 in

9

5/16-185/16 · 18 TPI

3/8 in5/8 in3/4 in7/8 in1 in1-1/4 in1-1/2 in1-3/4 in2 in

9

1/2-131/2 · 13 TPI

3/8 in5/8 in3/4 in7/8 in1 in1-1/4 in1-1/2 in1-3/4 in2 in

9

7/8-97/8 · 9 TPI

3/8 in5/8 in3/4 in7/8 in1 in1-1/4 in1-1/2 in1-3/4 in2 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-P0136-UNC
Product type: Socket Head Cap Screw
Material: 40CrMo Alloy Steel
Standard: ASME B18.3
Grade / class: Grade 12.9
Finish: Black Oxide
Thread series: UNC
Drive type: Hex Socket

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