REF4-4

View detailed technical data, stock status, and sourcing information for: REF4-4
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-236-6501

Item Name Code

13209

Assigment Date

03/12/1971 (55 years ago)

0.2495 inches minimum and 0.2515 inches maximum bore diameter, internally threaded w/bead and wrench flats and inspection hole shank style, 1.7400 inches minimum and 1.7960 inches maximum overall length, 3b thread class, right-hand thread direction

Product Characteristics

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

Thread Class: 3b
Thread Direction: right-hand
Shank Style: internally threaded w/bead and wrench flats and inspection hole
Overall Length: 1.7400 inches minimum and 1.7960 inches maximum
Bore Diameter: 0.2495 inches minimum and 0.2515 inches maximum
Outer Member Outside Diameter: 0.7500 inches minimum and 0.8220 inches maximum
Bore Center To Shank End Distance: 1.3650 inches minimum and 1.3850 inches maximum
Outer Member Width: 0.2990 inches minimum and 0.3090 inches maximum
Inner Member Width: 0.4320 inches minimum and 0.4370 inches maximum
Shank Thread Length: 0.7188 inches minimum and 0.8125 inches maximum
Inspection Hole Center To End Distance: 0.3070 inches minimum and 0.3170 inches maximum
Shank Width Across Wrench Flats: 0.3650 inches minimum and 0.3850 inches maximum
Static Radial Load Rating: 2200 pounds
Thread Diameter: 0.250 inches nominal
Thread Quantity Per Inch: 28
Hardness Rating: 60.0 rockwell c minimum inner member
Lubrication Feature: groove internal outer member
Material: copper alloy 485 race insert
Material: steel comp 1018 internal rod end body
Material: steel comp e52100 inner member
Surface Treatment: cadmium rod end body
Surface Treatment Document And Classification: qq-p-416,ty 1,cl 2 fed spec single treatment response rod end body
Style Designator: ball type
Thread Series Designator: unf

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
F44-14K	Rod End Plain Bearing
REF4-4	Rod End Plain Bearing
S1106-4	Rod End Plain Bearing
TR3-34	Rod End Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-236-6501?

The FSCG of the NSN 3120-00-236-6501 is 3120

Does the NSN 3120-00-236-6501 have a Schedule B code assigned?

Yes, the Schedule B code is 8483308055

Does NSN 3120-00-236-6501 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 3120-00-236-6501 contain precious materials?

Precious metal content is unknown

Does NSN 3120-00-236-6501 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 3120-00-236-6501 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Fri, Mar 12, 1971