868A4

View detailed technical data, stock status, and sourcing information for: 868A4
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2805 Except Aircraft; and Components Gasoline Reciprocating Engines

National Stock Number

2805-00-752-1813

Item Name Code

15884

Assigment Date

01/01/1960 (66 years ago)

45.0 chamfer angle in deg, 0.3590 inches minimum and 0.3650 inches maximum groove diameter, flat head style, 0.0300 inches nominal chamfer length, 0.1850 inches minimum and 0.2050 inches maximum head height

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Head Style: flat
Head Height: 0.1850 inches minimum and 0.2050 inches maximum
Chamfer Angle In Deg: 45.0
Groove Diameter: 0.3590 inches minimum and 0.3650 inches maximum
Chamfer Length: 0.0300 inches nominal
Groove Width: 0.1320 inches minimum and 0.1420 inches maximum
Outside Diameter: 1.7910 inches minimum and 1.8010 inches maximum
Seat Angle In Deg: 60.0
Stem Style: grooved
Carbon Relief Groove: not included
Neck Radius: 0.4400 inches nominal
Stem Length: 5.1830 inches minimum and 5.1980 inches maximum
Stem Diameter: 0.4332 inches minimum and 0.4340 inches maximum
Distance From Groove To Stem End: 0.2230 inches nominal
Metallic Hardness Rating And Location: 53.0 rockwell c nominal tip
Test Data Document: "mil-s-12515-81349 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2805-00-342-7719	No Name Available	01/01/1963

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
18825	Engine Poppet Valve
7521813	Engine Poppet Valve
868A4	Engine Poppet Valve
913795	Engine Poppet Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 2805-00-752-1813?

The FSCG of the NSN 2805-00-752-1813 is 2805

Does the NSN 2805-00-752-1813 have a Schedule B code assigned?

Yes, the Schedule B code is 8409918000

Does NSN 2805-00-752-1813 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 2805-00-752-1813 contain precious materials?

Precious metal content is unknown

Does NSN 2805-00-752-1813 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 2805-00-752-1813 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960