HF4644

View detailed technical data, stock status, and sourcing information for: HF4644
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part HF4644 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-227-3261

Item Name Code

00021

Assigment Date

01/01/1961 (65 years ago)

0.1250 inches nominal backface corner radius, 0.4375 inches nominal standout width, 2.2500 inches nominal overall width, 4.0000 inches nominal bore diameter, 7.5000 inches nominal overall outside diameter

Product Characteristics

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

Overall Width: 2.2500 inches nominal
Bore Diameter: 4.0000 inches nominal
Overall Outside Diameter: 7.5000 inches nominal
Backface Corner Radius: 0.1250 inches nominal
Standout Width: 0.4375 inches nominal
Cone Corner Radius: 0.3120 inches nominal
Cone Width: 2.2650 inches nominal
Cup Width: 1.8125 inches nominal
Standard Tolerance Designation: afbma class 2
Special Features: duty class hh series
Material: steel overall
Style Designator: straight bore, normal angle

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3110-00-166-1802	No Name Available	09/05/1972

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
073-4644	Tapered Roller Bearing
65393	Tapered Roller Bearing
HF4644	Tapered Roller Bearing
HH221410H221449	Tapered Roller Bearing
HH221449HH221410	Tapered Roller Bearing

FAQs

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

What is the FSCG of the NSN 3110-00-227-3261?

The FSCG of the NSN 3110-00-227-3261 is 3110

Does the NSN 3110-00-227-3261 have a Schedule B code assigned?

Yes, the Schedule B code is 8482200030

Does NSN 3110-00-227-3261 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 3110-00-227-3261 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-00-227-3261 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 3110-00-227-3261 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961