B7631-1

View detailed technical data, stock status, and sourcing information for: B7631-1
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Federal Supply Group

Vehicular Equipment Components

Federal Supply Classification

2520 Vehicular Power Transmission Components

National Stock Number

2520-00-873-5380

Item Name Code

10852

Assigment Date

11/03/1967 (58 years ago)

A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes:flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. Excludes:disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.

34.625 inches nominal overall length, 2.187 inches nominal first end pitch diameter, 1.750 inches nominal first end spline length, 2.250 inches nominal first end spline major diameter, 2.125 inches nominal first end spline minor diameter

Product Characteristics

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

Overall Length: 34.625 inches nominal
First End Spline Length: 1.750 inches nominal
First End Spline Minor Diameter: 2.125 inches nominal
First End Spline Major Diameter: 2.250 inches nominal
First End Pitch Diameter: 2.187 inches nominal
Second End Spline Length: 2.437 inches nominal
Second End Spline Minor Diameter: 2.000 inches nominal
Second End Spline Major Diameter: 2.125 inches nominal
Second End Pitch Diameter: 2.002 inches nominal
First End Type: splined
Second End Type: splined
First End Spline Quantity: 35
Second End Spline Quantity: 35
First End Facility Diameter: 2.377 inches nominal
Second End Facility Diameter: 2.125 inches nominal
First End Engaging/Locking/Positioning Facility: shoulder
First End Facility Width: 0.500 inches nominal
First End Facility Location: 2.125 in. from shaft end
First End Bearing Seat: not included
Second End Spline Type: involute
Second End Spline Pressure Angle In Deg: 30.0
Second End Engaging/Locking/Positioning Facility: shoulder
Second End Facility Width: 1.000 inches nominal
Second End Facility Location: 24.188 in. from shaft end
Second End Bearing Seat: not included
First End Spline Type: involute
First End Spline Pressure Angle In Deg: 30.0
Material: steel comp 4340h
Material Document And Classification: sae 4340h assn std single material response

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
B7631-1	Automotive Axle Shaft

FAQs

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

What is the FSCG of the NSN 2520-00-873-5380?

The FSCG of the NSN 2520-00-873-5380 is 2520

Does the NSN 2520-00-873-5380 have a Schedule B code assigned?

Yes, the Schedule B code is 8483909500

Does NSN 2520-00-873-5380 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 2520-00-873-5380 contain precious materials?

Precious metal content is unknown

Does NSN 2520-00-873-5380 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 2520-00-873-5380 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Fri, Nov 3, 1967