Bearings, Plain, Unmounted

Federal Supply Class (FSC): 3120

NATO Supply Classification Class (NSC): 3120

Group Description: Bearings

Federal Supply Group (FSG): 31

NATO Supply Classification Group (NSG): 31

Page 32 of 646

NSN Format for Bearings, Plain, Unmounted

3120XXXXXXXXX
Group
FSG
ClassNCBIdentifier
FSC
Federal Supply Class
NIIN
NSN
FSC 3120 Bearings, Plain, Unmounted
FSC 3120 Bearings, Plain, Unmounted

Includes Sleeve Bearings; Split Bearings; Washer Type Bearings; Jewel Bearings.

Excludes Antifriction Bearings (FSC 3110); Mounted Bearings (FSC 3130).

Note-All bearings, including specially designed, lubricated, and/or selected, are to be classified in the appropriate classes of this group. Bearings are parts that supports another part which rotates, slides, or oscillates in or on it.

Additional Information for Bearings, Plain, Unmounted Additional Information for Bearings, Plain, Unmounted

NATO Supply Class 3120 refers to Bearings, Plain, Unmounted. This class is a part of NATO Supply Group 31, which is specifically dedicated to Bearings.

Bearings are mechanical components that are used to reduce friction between moving parts and support rotational or linear motion. They are commonly used in various industries such as automotive, aerospace, machinery, and more.

The NATO Supply Class 3120 includes plain bearings that are unmounted. Plain bearings, also known as sleeve bearings or bushings, are the simplest type of bearings. They consist of a cylindrical sleeve made of a low-friction material, such as bronze or plastic, which provides a smooth surface for the rotating shaft to slide against.

These unmounted plain bearings are typically used in applications where the shaft is stationary, and the bearing is mounted in a housing or support structure. They are designed to handle radial loads, which are forces acting perpendicular to the shaft's axis.

NATO Supply Class 3120 for Bearings, Plain, Unmounted encompasses a wide range of sizes, materials, and designs to accommodate different applications and operating conditions. It is important to select the appropriate bearing based on factors such as load capacity, speed, temperature, and environmental conditions.

When procuring bearings within this NATO Supply Class, it is essential to ensure compliance with NATO standards and specifications to maintain interoperability and compatibility within the NATO supply chain.

Overall, NATO Supply Class 3120 for Bearings, Plain, Unmounted plays a crucial role in the NATO Supply Group 31 for Bearings, providing the necessary components for various mechanical systems and equipment.

NSN by Country NSN by Country

Frequently Asked Questions(FAQ) for Federal Supply Class 3120 Frequently Asked Questions(FAQ) for Federal Supply Class 3120

What is Federal Supply Class 3120?
FSC 3120 is the Federal Supply Class(formally known as NATO Supply Classification Class NSC 3120) in the USA for supply items codified in the category of Bearings, Plain, Unmounted.
What is NATO Supply Classification Class 3120?
NSC 3120 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 3120 in the USA) for supply items codified in the category of Bearings, Plain, Unmounted.
Which Federal Supply Group is FSC 3120 in?
FSC 3120 is in Federal Supply Group(FSG) 31 which contains .
Which NATO Supply Classification Group is NSC 3120 in?
NSC 3120 is in NATO Supply Classification Group(NSG) 31 which contains .

Supply Items Included in Federal Supply Class 3120 Supply Items Included in Federal Supply Class 3120

What is a Spherical Plain Bearing? 2198 Items
A Spherical Plain Bearing (BEARING,PLAIN,SPHERICAL) is a detachable part in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. It may be divided into two or more segments of 180 degrees (3.141 radians) or less. The item has a cylindrical bore and is basically spherical in its exterior design to allow for shaft misalignment. Excludes BEARING, PLAIN, SELF-ALIGNING.
What is a Sleeve Bearing? 60258 Items
A Sleeve Bearing (BEARING,SLEEVE) is a tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. It must have a visible or detectable means of lubrication or be self-lubricated. The over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. Includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. See also BUSHING, SLEEVE; SPACER, SLEEVE; and WASHER (as modified). Excludes PIN, HOLLOW.
What is a Sleeve Bushing? 91287 Items
A Sleeve Bushing (BUSHING,SLEEVE) is 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.
What is a Self-Aligning Plain Bearing? 5035 Items
A Self-Aligning Plain Bearing (BEARING,PLAIN,SELF-ALIGNING) is a detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The item consists of a bored precision ground ball (or spherical plain bearing) around which an outer ring is fitted. The assembly may be either separable or nonseparable. Excludes BEARING, PLAIN, ROD END and BEARING, PLAIN, SPHERICAL.
What is a Rod End Plain Bearing? 6621 Items
A Rod End Plain Bearing (BEARING,PLAIN,ROD END) is a detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The outer member of the assembly is modified to provide a shank. The inner member may be either a plain spherical bearing or a sleeve bearing. Excludes BEARING, PLAIN, SPHERICAL and BEARING, PLAIN, SELF-ALIGNING.
What is a Railway Axle Plain Bearing? 20 Items
A Railway Axle Plain Bearing (BEARING,PLAIN,RAILWAY AXLE) is a block of brass or bronze lined with antifriction metal, which serves as a bearing surface, carrying the weight of the railway car and resting on the axle journal.
What is a Thrust Washer Bearing? 16450 Items
A Thrust Washer Bearing (BEARING,WASHER,THRUST) is 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.
What is a V Bearing? 70 Items
A V Bearing (BEARING,V) is a cylindrical device, primarily designed to furnish a bearing surface for a low-speed oscillating shaft. The item consists of a precision machined or inclosed V or modified V groove and may include a drilled hole for spring loading.
What is a Sleeve Bearing Blank? 205 Items
A Sleeve Bearing Blank (BEARING BLANK,SLEEVE) is an item usually cylindrically shaped with or without a flange. It is designed to be drilled after installation and used as a BEARING, SLEEVE. Excludes items in bulk form. See also BUSHING BLANK.
What is a Sleeve Bearing Half Set? 3761 Items
A Sleeve Bearing Half Set (BEARING HALF SET,SLEEVE) is two or more identical or different sizes or types of BEARING HALF, SLEEVE packaged or grouped together for single issue as a unit, for replacement of worn and/or damaged bearings. See BEARING HALF, SLEEVE. Excludes BEARING SET, SLEEVE.
What is a Sleeve Bearing Set? 1388 Items
A Sleeve Bearing Set (BEARING SET,SLEEVE) is two or more identical or different sizes or types of BEARING, SLEEVE packaged or grouped together for single issue as a unit, for replacement of worn and/or damaged bearings. See BEARING, SLEEVE. Excludes BEARING HALF SET, SLEEVE.
What is a Sleeve Bearing Half? 4067 Items
A Sleeve Bearing Half (BEARING HALF,SLEEVE) is a half of a two-piece split type BEARING, SLEEVE.
What is a Linear-Rotary Motion Roller? 4469 Items
A Linear-Rotary Motion Roller (ROLLER,LINEAR-ROTARY MOTION) is a cylindrical body having a centrally located hole to accommodate a pin or shaft for attachment to a push rod guide, yoke, rocker arm, turntable, or rail. The item provides a rolling contact with the face of a valve stem, or the lobes of a cam ring or camshaft on engines, fuel injection pumps, latches, turntables, parallel bearing surfaces requiring a roller support, and the like. Excludes BEARING, ROLLER, CYLINDRICAL; ROLLER, ELECTRICAL SWITCH; and friction bearings. See also CAM FOLLOWER, NEEDLE BEARING.
What is a Mechanical Equipment Bearing Replacement Parts Kit? 717 Items
A Mechanical Equipment Bearing Replacement Parts Kit (PARTS KIT,BEARING REPLACEMENT,MECHANICAL EQUIPMENT) is a parts kit consisting of one or more bearings or bearing assemblies, which are issued as a unit for repair/replacement. It may include gasket(s), O-ring(s), race(s), seal(s), spacer(s), washer(s), or the like.
What is a Track Roller Plain Bearing? 192 Items
A Track Roller Plain Bearing (BEARING,PLAIN,TRACK ROLLER) is a detachable assembly consisting of an outer and inner ring, designed for use in a track roller or similar application. It is used to carry a load and reduce sliding friction. It does not employ rolling elements, but may incorporate non-metallic liners or sleeves to aid in reducing friction and/or providing lubrication. See also BEARING, BALL, TRACK ROLLER; and BEARING, ROLLER, TRACK ROLLER. Excludes BEARING, PLAIN, SPHERICAL and BEARING, PLAIN, SELF-ALIGNING.
What is a Cam Follower Plain Bearing? 152 Items
A Cam Follower Plain Bearing (BEARING,PLAIN,CAM FOLLOWER) is a detachable assembly, which provides rolling contact with a cam or similar device, and converts reciprocating or oscillating motion to linear motion. The assembly consists of an outer ring and and integral stud. It does not employ rolling elements but may incorporate nonmetallic liners or sleeves to aid in reducing friction and/or providing lubrication. See also CAM FOLLOWER, NEEDLE BEARING.
What is a Jewel Bearing? 49 Items
A Jewel Bearing (BEARING,JEWEL) is an item generally round in shape and usually having a centrally located hole. It has at least one flat bearing surface. It is made of precious or semi-precious gem (ruby, sapphire and the like), natural or synthetic. It is intended for use in precision instruments, meters, timing devices, clocks, and the like.
What is a Thrust Washer Bearing Half? 516 Items
A Thrust Washer Bearing Half (BEARING HALF,WASHER,THRUST) is a half of a two-piece BEARING, WASHER, THRUST.
What is a Thrust Washer Bearing Set? 94 Items
A Thrust Washer Bearing Set (BEARING SET,WASHER,THRUST) is a collection of identical or similar BEARING, WASHER, THRUST designed to be used for replacement of worn and/or damaged washers. Excludes WASHER ASSORTMENT.
What is a Stern Tube Bearing Assembly? 54 Items
A Stern Tube Bearing Assembly (BEARING ASSEMBLY,STERN TUBE) is an assembly consisting of staves, anode, bearing, housing and the like. It supports a rotating propulsion shaft.
What is a Sleeve Bushing Half? 446 Items
A Sleeve Bushing Half (BUSHING HALF,SLEEVE) is a half of a two piece split type BUSHING, SLEEVE.

Stock Items From Supply Class 3120 Stock Items From Supply Class 3120 Page 32of 646

011730378
9997M53P05
RNCC: 3 | RNVC: 2
011729664
8224806-05
RNCC: 3 | RNVC: 2
8224806-05
RNCC: 5 | RNVC: 9
011729064
75A427208-1001
RNCC: 3 | RNVC: 2
011728167
HS5542-04101
RNCC: 3 | RNVC: 2
HS5542-04101
RNCC: 5 | RNVC: 9
HS610SP4375R250Y0300M
RNCC: 5 | RNVC: 9
011728168
2207615-1
RNCC: 3 | RNVC: 2
011728166
HS610C3750R250X1890M
RNCC: 3 | RNVC: 2
HS610C3750R250X1890M
RNCC: 3 | RNVC: 9
011725185
HS5542-03030
RNCC: 3 | RNVC: 2
HS5542-03030
RNCC: 5 | RNVC: 9
HS610SP3750R190T0100
RNCC: 5 | RNVC: 9
011725177
HS5542-03018
RNCC: 3 | RNVC: 2
HS5542-03018
RNCC: 5 | RNVC: 9
HS610SP3120R190X0333
RNCC: 5 | RNVC: 9
011725184
HS610SP3750-250-1312M
RNCC: 3 | RNVC: 2
011725147
1168111-1
RNCC: 1 | RNVC: 2
ADSB28V307
RNCC: 3 | RNVC: 2
KSC143728B
RNCC: 3 | RNVC: 2
176473
RNCC: 3 | RNVC: 2
LWG28R-139
RNCC: 3 | RNVC: 2
011724297
AYRB462
RNCC: 3 | RNVC: 2
011719213
406-310-404-101
RNCC: 3 | RNVC: 2
AM2031-DHS
RNCC: 5 | RNVC: 1
406-310-404-101
RNCC: 5 | RNVC: 2
011717821
7-211411166-5
RNCC: 3 | RNVC: 2
7-211411166-5
RNCC: 5 | RNVC: 9
011710681
LD137-0041-0659
RNCC: 3 | RNVC: 2
011710039
12619008-1
RNCC: 3 | RNVC: 2
011710040
12619008-2
RNCC: 3 | RNVC: 2
011709340
818A
RNCC: 3 | RNVC: 2
011706347
BACB28W17B034
RNCC: 3 | RNVC: 2
011706344
1475C96
RNCC: 3 | RNVC: 1
20983
RNCC: 5 | RNVC: 1
011704633
LD137-0041-0656
RNCC: 3 | RNVC: 2
011704631
BACB28X6C034
RNCC: 3 | RNVC: 2
011701888
12722530
RNCC: 3 | RNVC: 2
12600056
RNCC: 5 | RNVC: 9
011701881
12600272-1
RNCC: 3 | RNVC: 2
011701883
12601451
RNCC: 3 | RNVC: 2
011701288
369H5103
RNCC: 3 | RNVC: 2
011699296
35167
RNCC: 3 | RNVC: 2
013569
RNCC: 3 | RNVC: 9
013569
RNCC: 5 | RNVC: 9
011698582
12601047
RNCC: 3 | RNVC: 2
011698583
12601861
RNCC: 3 | RNVC: 2
011697531
8S5346
RNCC: 3 | RNVC: 2
011693413
12604096
RNCC: 3 | RNVC: 2
011693415
12617466
RNCC: 3 | RNVC: 2
011692992
922F776 ITEM 10
RNCC: 3 | RNVC: 1
RO0091
RNCC: 5 | RNVC: 2
TT-504
RNCC: 5 | RNVC: 9
011692119
1862800SH2PC7
RNCC: 3 | RNVC: 1
207-1862800SH2PC7
RNCC: 5 | RNVC: 1
011690459
12617224
RNCC: 3 | RNVC: 2
011690129
NRR-07ES
RNCC: 3 | RNVC: 2
BACB10ES-07
RNCC: 3 | RNVC: 2
B5-1578
RNCC: 5 | RNVC: 2
011688497
41-4451-1 AND-4
RNCC: 3 | RNVC: 2
46455 GR1
RNCC: 5 | RNVC: 2
011688033
12614716
RNCC: 3 | RNVC: 2
011688029
12601680
RNCC: 3 | RNVC: 2
011686645
5F20-3472
RNCC: 3 | RNVC: 2
011686644
5F20-3452
RNCC: 3 | RNVC: 2
011686047
GN-26-11C
RNCC: 3 | RNVC: 2
011685664
1S-5421 PC 113 SPCLN
RNCC: 3 | RNVC: 1
011685663
1862800SH3PC12
RNCC: 3 | RNVC: 1
207-1862800SH3PC12
RNCC: 5 | RNVC: 1
011683103
728786-1
RNCC: 3 | RNVC: 2
011670237
244599-001
RNCC: 3 | RNVC: 9
011668514
KT50NZ-008
RNCC: 3 | RNVC: 2
011667015
165B-00-16-40
RNCC: 3 | RNVC: 2
165B-00-16-40
RNCC: 5 | RNVC: 9
011666919
02161-2045
RNCC: 3 | RNVC: 2
2161-2045
RNCC: 5 | RNVC: 2
011663678
LD137-0026-1004
RNCC: 3 | RNVC: 2
011662305
12616703
RNCC: 3 | RNVC: 2
011660381
12600272-2
RNCC: 3 | RNVC: 2
011660284
12600273-6
RNCC: 3 | RNVC: 2
011660283
12600273-8
RNCC: 3 | RNVC: 2
011648125
61-550-0069-1
RNCC: 3 | RNVC: 2
011643999
1183-10
RNCC: 3 | RNVC: 2
011636538
LD137-0044-0617
RNCC: 3 | RNVC: 2
011635027
7-211320147
RNCC: 3 | RNVC: 2
7-211320147
RNCC: 5 | RNVC: 9
011634658
7-211511197
RNCC: 3 | RNVC: 2
7-211511197
RNCC: 5 | RNVC: 9
011631514
784344P10
RNCC: 3 | RNVC: 2
011628661
LD137-0045-0805
RNCC: 3 | RNVC: 2
011625395
7236661-15-81755
RNCC: 3 | RNVC: 2
7236661-15
RNCC: 5 | RNVC: 9
7236661-15-81755
RNCC: 5 | RNVC: 9
7236661-15
RNCC: 7 | RNVC: 2
011616271
810-2178000-4 ITEM 6
RNCC: 3 | RNVC: 1
209-4788589 ITEM 8
RNCC: 5 | RNVC: 1
209-4788589 ITEM 8L1
RNCC: 5 | RNVC: 2
810-2178000-4 ITEM 6L1
RNCC: 5 | RNVC: 2