NAS77-4-21

Comprehensive specifications and application details for: NAS77-4-21 Sleeve Bushing.

Summary

Explore detailed summary information for bearing: NAS77-4-21. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number
NAS77-4-21
Federal Supply Classification
3120 Unmounted Plain Bearings
(NSN) National Stock Number
3120-00-287-9752
Item Name Code
13206
Federal Item Identification Guide
A045A0
Assigment Date
01/01/1963

A tubular shaped unthreaded item with or without a flange at one end designed to be inserted into a hole to reduce the inside diameter of the hole and to protect the surrounding body structure from damage resulting from stress, strain, and/or vibration. The overall length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body. Includes items which are divided into two or more segments which includes 180 degrees (3.141 radians) or less of the bearing periphery. For items made of rubber, see bushing, nonmetallic. See also bearing, sleeve; bushing, tapered; spacer, sleeve; insulator, bushing; and bushing, electrical conductor. Excludes:bushing, drill, jig.

0.2500 inches minimum and 0.2515 inches maximum body inside diameter, chamfered inside left corner corner shape, 0.3756 inches minimum and 0.3761 inches maximum body outside diameter, square left flange outside right corner corner shape, chamfered inside right corner corner shape

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-287-9752 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter
0.2500 inches minimum and 0.2515 inches maximum
Body Outside Diameter
0.3756 inches minimum and 0.3761 inches maximum
Corner Shape
chamfered inside left corner
Corner Shape
chamfered inside right corner
Corner Shape
square left flange outside right corner
Corner Shape
square outside left corner
Corner Shape
square outside right corner
Corner Shape
undercut left flange body corner
Flange Outside Diameter
0.4900 inches minimum and 0.5100 inches maximum
Flange Width
0.0570 inches minimum and 0.0620 inches maximum
Overall Length
0.2620 inches minimum and 0.2770 inches maximum
Material Document And Classification
mil-s-6758 mil spec 1st material response or mil-s-6050 mil spec 2nd material response overall
Material
steel comp 4130 or steel comp 8630 overall
Special Features
id and od to be parallel and concentric within 0.0030 tir
Specification/Standard Data
80205-nas77 professional/industrial association standard
Style Designator
solid, external flange one end
Surface Finish
100.0 microinches intermediate layer
Surface Treatment Document And Classification
qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Surface Treatment
cadmium overall

Replaces

The NSN 3120-00-287-9752 is used in place of the following discontinued or alternate items:

NSN Name Date
3120-00-517-8377 No Name Available 01/01/1963

Frequently Asked Questions

Find quick answers to common questions about bearing: NAS77-4-21. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-287-9752?
The FSCG of the NSN 3120-00-287-9752 is 3120
Does the NSN 3120-00-287-9752 have a Schedule B code assigned?
Yes, the Schedule B code is 8482997060
Does NSN 3120-00-287-9752 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 3120-00-287-9752 contain precious materials?
Item does not contain precious metal.
Does NSN 3120-00-287-9752 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 3120-00-287-9752 was assigned to the Federal Catalog?
It was assigned 62 years ago, on Tue, Jan 1, 1963

Price & Availability

Fill out the form to get pricing and availability details for the bearing: NAS77-4-21

Popular Bearings

Browse our selection of high-demand, high-performance bearings:

845-2445496ITEM36
3110-01-186-5652
End Lh Bearing Rod
845-4457741 PIECE 13
3120-01-286-4699
Sleeve Bushing
845-4558706 ITEM 12
3120-01-062-1096
Thrust Washer Bearing
845-4558706 ITEM 13
3120-01-076-5034
Thrust Washer Bearing
845-4558716 REF 3 ITEM NO 18
3110-01-670-5017
Needle Roller Bearing
845-4558716 REF 3 ITEM NO 18D4
3110-01-670-5017
Needle Roller Bearing
845-4558716 REF 3 ITEM NO 19
3110-01-670-4988
Needle Roller Bearing
845-4558716 REF 3 ITEM NO 19D4
3110-01-670-4988
Needle Roller Bearing
845-4558718 ITEM 15
3120-01-105-7317
Sleeve Bushing
845-4558718 ITEM 18
3110-01-670-5017
Needle Roller Bearing
845-4558718 ITEM 18D4
3110-01-670-5017
Needle Roller Bearing
845-4558718 ITEM 19
3110-01-201-2298
Needle Roller Bearing
845-4558718 ITEM 19D4
3110-01-670-4988
Needle Roller Bearing
845-4558718 ITEM 2
3120-01-478-7536
Sleeve Bushing
845-4558718 ITEM 2D4
3120-01-546-7957
Sleeve Bushing