KP4A20

View detailed technical data, stock status, and sourcing information for: KP4A20
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-970-2747

Item Name Code

00041

Assigment Date

09/30/1966 (59 years ago)

0.2500 inches nominal bore diameter, 0.2190 inches nominal outer ring width, 2 seal quantity, 0.7500 inches nominal overall outside diameter, 0.2810 inches nominal inner ring width

Product Characteristics

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

Bore Diameter: 0.2500 inches nominal
Overall Outside Diameter: 0.7500 inches nominal
Outer Ring Width: 0.2190 inches nominal
Inner Ring Width: 0.2810 inches nominal
Seal Quantity: 2
Bearing Seal Type: contact
Load Direction: radial
Standard Tolerance Designation: afbma std tolerance for airframe ball bearings
Special Features: rings and balls material modified by addition of 4 pct molybdenum,prelubricated with 40 to 50 pct specified grease,rings and balls heat stabilized to 400 deg f,max no load starting torque 0.2720 in. oz.,radial clearance 0.0001 in. min to 0.0004 in. max
Lubrication Material: grease
Lubrication Material Document And Classification: mil-g-23827 mil spec single material response
Material: plastic polytetrafluoroethylene seal
Material: steel comp 440c ball
Material: steel comp 440c outer ring
Material: steel comp 440c inner ring
Style Designator: single row inner ring extended both sides

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
AAMKP4AE9106A	Airframe Ball Bearing
C525KP4A	Airframe Ball Bearing
KP4A20	Airframe Ball Bearing
MKP4AE9105	Airframe Ball Bearing

FAQs

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

What is the FSCG of the NSN 3110-00-970-2747?

The FSCG of the NSN 3110-00-970-2747 is 3110

Does the NSN 3110-00-970-2747 have a Schedule B code assigned?

Yes, the Schedule B code is 8482105068

Does NSN 3110-00-970-2747 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 3110-00-970-2747 contain precious materials?

Precious metal content is unknown

Does NSN 3110-00-970-2747 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 3110-00-970-2747 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Fri, Sep 30, 1966