SWKN-4-400C

View detailed technical data, stock status, and sourcing information for: SWKN-4-400C

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SWKN-4-400C
Federal Supply Group
Bearings
Federal Supply Classification
3120 Unmounted Plain Bearings
National Stock Number
3120-01-275-3422
Item Name Code
13208
Assigment Date
03/21/1988 (38 years ago)

An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes:straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.

0.6557 inches minimum and 0.6562 inches maximum outer member outside diameter, 0.2495 inches minimum and 0.2500 inches maximum bore diameter, 6040 pounds static radial load rating, 0.2450 inches minimum and 0.2550 inches maximum outer member width, 0.3410 inches minimum and 0.3430 inches maximum inner member 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
0.2495 inches minimum and 0.2500 inches maximum
Outer Member Outside Diameter
0.6557 inches minimum and 0.6562 inches maximum
Outer Member Width
0.2450 inches minimum and 0.2550 inches maximum
Inner Member Width
0.3410 inches minimum and 0.3430 inches maximum
Static Radial Load Rating
6040 pounds
Hardness Rating
43.0 rockwell c minimum and 47.0 rockwell c maximum inner member
Hardness Rating
28.0 rockwell c minimum and 37.0 rockwell c maximum outer race member
Lubrication Feature
self-lubricating liner race liner
Material
plastic polytetrafluoroethylene race liner
Material
steel comp 630 outer race member
Material
steel comp xm-13 inner member
Material Document And Classification
ams 5629 assn std single material response inner member
Material Document And Classification
ams 5643 assn std single material response outer race member
Style Designator
with insert and/or liner with staking groove

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
03-835-04C Self-Aligning Plain Bearing
04A064-4C Self-Aligning Plain Bearing
HT4VPH Self-Aligning Plain Bearing
HT4VPH(L1) Self-Aligning Plain Bearing
KNDB4-29 Self-Aligning Plain Bearing
KR4-CNGBC Self-Aligning Plain Bearing
MS14101-4C Self-Aligning Plain Bearing
SWKN-4-400C Self-Aligning Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-01-275-3422?
The FSCG of the NSN 3120-01-275-3422 is 3120
Does the NSN 3120-01-275-3422 have a Schedule B code assigned?
Yes, the Schedule B code is 8482300040
Does NSN 3120-01-275-3422 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 3120-01-275-3422 contain precious materials?
Item does not contain precious metal.
Does NSN 3120-01-275-3422 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 3120-01-275-3422 was assigned to the Federal Catalog?
It was assigned 38 years ago, on Mon, Mar 21, 1988

Professional Distribution

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Pricing

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ITAR Registered

In Stock

This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.

New Surplus 4
New Material 784
Total 788
Availability of this item was last updated on: 04/20/2026 11:04 AM EDT. Stock levels and pricing are subject to change.

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