Bearings, Plain, Unmounted - United States (US)

Federal Supply Class (FSC): 3120

NATO Supply Classification Class (NSC): 3120

Federal Supply Group (FSG): 31 Bearings

NATO Supply Classification Group (NSG): 31 Bearings

Items Managed by United States (US) - NCB is 00 to 09

Page 13 of 345

NSN Format for Bearings, Plain, Unmounted
Codified by United States

312001XXXXXXX
Group
FSG
ClassNCBIdentifier
FSC
Federal Supply Class
NIIN
NSN

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.

FSC 3120 Bearings, Plain, Unmounted - United States (US)
FSC 3120 Bearings, Plain, Unmounted - United States (US)

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.

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 Bearings.
Which NATO Supply Classification Group is NSC 3120 in?
NSC 3120 is in NATO Supply Classification Group (NSG) 31 which contains Bearings.

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

What is a Spherical Plain Bearing? 1111 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? 30069 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? 47513 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? 2598 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? 3410 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? 13 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? 8352 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? 34 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? 101 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? 495 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? 765 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? 1538 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? 1431 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? 501 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? 68 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? 74 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? 37 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? 99 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? 22 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? 33 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? 119 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 13 of 345

012365623
4M266-6
RNCC: 3 | RNVC: 2
012365625
AF-8-G
RNCC: 3 | RNVC: 2
77C721246P004
RNCC: 7 | RNVC: 2
012365423
BACB28AK03-110
RNCC: 3 | RNVC: 2
012365344
5M1583
RNCC: 3 | RNVC: 2
012362637
NAS75-5-231
RNCC: 3 | RNVC: 2
012362419
1M780
RNCC: 3 | RNVC: 2
012362413
5K7041
RNCC: 3 | RNVC: 2
012362414
6K3194
RNCC: 3 | RNVC: 2
012362416
6K6350
RNCC: 3 | RNVC: 2
012362417
7K7195
RNCC: 3 | RNVC: 2
012362418
5K2383
RNCC: 3 | RNVC: 2
012362415
6K6044
RNCC: 3 | RNVC: 2
012361874
22042-01
RNCC: 3 | RNVC: 2
22042-01
RNCC: 5 | RNVC: 9
012358276
278272R1
RNCC: 3 | RNVC: 2
278272R1
RNCC: 5 | RNVC: 9
012358275
559205R91
RNCC: 3 | RNVC: 2
559205R91
RNCC: 5 | RNVC: 9
012355978
881871-2
RNCC: 3 | RNVC: 2
012352130
400325
RNCC: 3 | RNVC: 2
400325
RNCC: 5 | RNVC: 9
012350345
JBK521
RNCC: 3 | RNVC: 1
140BG5PC48
RNCC: 5 | RNVC: 1
JBK521
RNCC: 5 | RNVC: 1
012346425
16368
RNCC: 3 | RNVC: 2
3A8054
RNCC: 5 | RNVC: 2
012343174
20541PC4
RNCC: 3 | RNVC: 1
012342444
BLATT 23 TEIL 77
RNCC: 3 | RNVC: 2
012342452
BLATT 135 TEIL 32
RNCC: 3 | RNVC: 2
012342443
BLATT 23 TEIL 75
RNCC: 3 | RNVC: 2
012338907
BLATT 307 TEIL 44
RNCC: 3 | RNVC: 2
012338908
BLATT 306 TEIL 41
RNCC: 3 | RNVC: 2
012338271
BLATT 308 TEIL 76
RNCC: 3 | RNVC: 2
012338257
BLATT 306 TEIL S0
RNCC: 3 | RNVC: 2
012338248
BLATT 16 TEIL 84
RNCC: 3 | RNVC: 2
012338246
BLATT 16 TEIL 81
RNCC: 3 | RNVC: 2
012338247
BLATT 16 TEIL 82
RNCC: 3 | RNVC: 2
012338244
BLATT 16 TEIL 83
RNCC: 3 | RNVC: 2
012337066
5343962-0113
RNCC: 3 | RNVC: 2
012335823
576E439P1 MOD
RNCC: 3 | RNVC: 2
012332087
S-1-132579
RNCC: 3 | RNVC: 1
012331992
8447670
RNCC: 3 | RNVC: 2
012323894
03031-98
RNCC: 3 | RNVC: 2
012321188
8224819-03
RNCC: 3 | RNVC: 2
8224819-03
RNCC: 5 | RNVC: 9
012313908
399525
RNCC: 3 | RNVC: 2
012313731
231172
RNCC: 3 | RNVC: 2
012311366
P-2241
RNCC: 3 | RNVC: 2
P-2241
RNCC: 3 | RNVC: 9
SP-59 PIECE 4AX5A
RNCC: 5 | RNVC: 9
012310564
515-S-N3-EX3 ITEM 504
RNCC: 3 | RNVC: 2
012305485
S9401-2H570
RNCC: 3 | RNVC: 2
012294704
S9401-2H571
RNCC: 3 | RNVC: 2
012294702
S9401-1H77
RNCC: 3 | RNVC: 2
012294701
S9401-1H76
RNCC: 3 | RNVC: 2
012294703
S9401-2H569
RNCC: 3 | RNVC: 2
012294698
LS10020F8PP11
RNCC: 3 | RNVC: 2
012294508
KJB226206B
RNCC: 3 | RNVC: 2
012293570
5002601
RNCC: 3 | RNVC: 2
5002601
RNCC: 5 | RNVC: 9
012290307
ST4M167P3-0025
RNCC: 3 | RNVC: 2
012290308
4M43P5-017
RNCC: 3 | RNVC: 2
012289564
810-1922813 ASSYB PC 4
RNCC: 3 | RNVC: 1
810-1922813
RNCC: 5 | RNVC: 1
012284153
320499
RNCC: 3 | RNVC: 2
320499
RNCC: 5 | RNVC: 9
012280657
25343-U-316SS-0.75IN-PC1
RNCC: 3 | RNVC: 1
25343-U-316LSS-0.75IN-1
RNCC: 5 | RNVC: 1
012278522
S9099-4G10
RNCC: 3 | RNVC: 2
012278523
S9099-4G11
RNCC: 3 | RNVC: 2
012271515
AG-72-4
RNCC: 3 | RNVC: 2
ABB72-101
RNCC: 5 | RNVC: 9
703675
RNCC: 7 | RNVC: 2
012270155
863T0150126-012
RNCC: 3 | RNVC: 9
012266780
5429020
RNCC: 3 | RNVC: 2
012264560
4592603 ITEM 19
RNCC: 3 | RNVC: 2
012264104
DTE778451
RNCC: 3 | RNVC: 2
012260892
GN-7-5B
RNCC: 3 | RNVC: 2
012255294
NH7504A6-096
RNCC: 3 | RNVC: 2
KDJ06A096-58
RNCC: 3 | RNVC: 2
BJ12TF096W4
RNCC: 3 | RNVC: 2
06-382-6E-096-001
RNCC: 3 | RNVC: 2
BJ12TF096W4
RNCC: 5 | RNVC: 9
C7504A6-096
RNCC: 7 | RNVC: 2
012249875
142X177DR-1
RNCC: 3 | RNVC: 9
012249272
KMDB30-8
RNCC: 3 | RNVC: 2
ADS830V16
RNCC: 5 | RNVC: 2
03-826-30E-001
RNCC: 5 | RNVC: 2
GB520BT30A
RNCC: 7 | RNVC: 2
012247999
44B503565-G01
RNCC: 3 | RNVC: 9
012247221
LS10020-7PP9
RNCC: 3 | RNVC: 2
012246250
GN-74-4E
RNCC: 3 | RNVC: 2
012246200
GSB-17-5V
RNCC: 3 | RNVC: 2
012246035
LC2411A
RNCC: 3 | RNVC: 9
76TE2601-3-PIECE-47
RNCC: 5 | RNVC: 2
012245996
112992-1
RNCC: 3 | RNVC: 2
012242432
3/4IN-D33962-M PC 5 416SS
RNCC: 3 | RNVC: 1
000.75 IN-D33962-M PC.5-416SS
RNCC: 5 | RNVC: 1
D33962-M
RNCC: 5 | RNVC: 1
012241264
30222A
RNCC: 3 | RNVC: 2
012239688
4130616
RNCC: 3 | RNVC: 2
012238931
13076329
RNCC: 3 | RNVC: 2
13076329
RNCC: 5 | RNVC: 9
012236912
4044397-0
RNCC: 3 | RNVC: 2
X4265
RNCC: 5 | RNVC: 9
012232671
J551A
RNCC: 3 | RNVC: 9
76TE-2601-3-PIECE-35
RNCC: 5 | RNVC: 2
012232670
A-1138
RNCC: 3 | RNVC: 2
012231842
7615-0005-01
RNCC: 3 | RNVC: 2
012231715
SSN593-520-1862102 PIECE 3
RNCC: 3 | RNVC: 2
SSN593-520-1862102 PIECE 3
RNCC: 5 | RNVC: 2
012230325
LS12644-21A025K
RNCC: 3 | RNVC: 2
012230326
LS12644-12A075K
RNCC: 3 | RNVC: 2
012230323
LS12644-14A025K
RNCC: 3 | RNVC: 2
012230324
LS12644-14D033E
RNCC: 3 | RNVC: 2
012229340
A-1110
RNCC: 3 | RNVC: 2
012227785
ED373A
RNCC: 3 | RNVC: 9
76TE2601-3-PIECE-112
RNCC: 5 | RNVC: 2
012223934
WW-315
RNCC: 3 | RNVC: 9
76TE-2601-3-PIECE-106
RNCC: 5 | RNVC: 2
012216199
510-0101
RNCC: 3 | RNVC: 2
012213243
J-86-M
RNCC: 3 | RNVC: 9
76TE2601-3-PIECE-37
RNCC: 5 | RNVC: 2