NSN 3110-00-988-7656, 3110009887656
Cancelled -> Replaced by 3110015030671

Federal Supply Classification: FSC 3110 - Bearings, Antifriction, Unmounted
National Item Identification Number: NIIN 009887656
Codification Country: United States
Item Name Code: INC 00014
Criticality: (F) This item is a Flight Safety Critical Aircraft Part (FSCAP).
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: We have 1 qualified suppliers

Manufacture or supply this part?
Join our growing community of certified suppliers.

Let Us Know

CALL ABOUT NSN 3110-00-988-7656

Our client representatives are standing by to help fulfill your request.

+1-321-773-5710

REQUEST QUOTE for 3110-00-988-7656

Have a list that needs to be quoted? Upload it here.

Upload a List

DLMS^® Summary

National Stock Number 3110-00-988-7656

National Stock Number (NSN) 3110-00-988-7656, or NIIN 009887656, (bearing,ball,annular) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 3110015030671.

There are 8 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.

This part number has not been procured by the US Government in over 5 years.

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 1,398. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 13, 2020, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 00014. [A CYLINDRICAL DEVICE IN WHICH THE INNER OR OUTER RING TURNS UPON A SINGLE OR DOUBLE ROW OF HARDENED BALLS WHICH ROLL EASILY BETWEEN THE TWO RINGS, THUS MINIMIZING FRICTION. FOR ITEMS WITH FACES SPECIALLY GROUND FOR DUPLEX MOUNTING SEE BEARING,BALL,DUPLEX. EXCLUDES:BEARING,BALL,AIRFRAME.]. This item is a Flight Safety Critical Aircraft Part (FSCAP). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3110009887656 does not contain precious metals.

This NSN is associated to Schedule B 8482105028: angular contact ball bearings, nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332991: ball and roller bearing manufacturing.

This information was last updated on Aug 01, 2025.

Technical Characteristics

STYLE DESIGNATOR: (STYL) 40A 4 POINT BALL CONTACT, SOLID INNER AND OUTER RINGS, NON-SEPARABLE
BORE DIAMETER: (ABXV) 20.00 MILLIMETERS NOMINAL
BORE SHAPE: (AGZD) STRAIGHT
INTERNAL CLEARANCE: (AKVV) 0.0040 INCHES MINIMUM AXIAL AND 0.0060 INCHES MAXIMUM AXIAL AND 0.0003 INCHES MINIMUM RADIAL AND 0.0009 INCHES MAXIMUM RADIAL
LOAD DIRECTION: (AGZC) RADIAL
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) -3900 91547 MFR REF SINGLE MATERIAL RESPONSE RETAINER
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) AMS 6440 ASSN STD SINGLE MATERIAL RESPONSE BALL
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) AMS 6440 ASSN STD SINGLE MATERIAL RESPONSE INNER RING
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) AMS 6440 ASSN STD SINGLE MATERIAL RESPONSE OUTER RING
OVERALL OUTSIDE DIAMETER: (ADGA) 37.00 MILLIMETERS NOMINAL
OVERALL WIDTH: (ABMK) 9.00 MILLIMETERS NOMINAL
MATERIAL: (MATT) COPPER ALLOY RETAINER
MATERIAL: (MATT) STEEL BALL
MATERIAL: (MATT) STEEL INNER RING
MATERIAL: (MATT) STEEL OUTER RING
RETAINER FABRICATION METHOD: (AGYF) MACHINED
STANDARD TOLERANCE DESIGNATION: (CTFZ) ABEC NO.3
STYLE DESIGNATOR: (STYL) 4 POINT BALL CONTACT, SOLID INNER AND OUTER RINGS, NON-SEPARABLE
SPECIAL FEATURES: (FEAT) STABILIZED FOR OPERATION AT M65 DEG F TO P350 DEG F,RETAINER OD CONCENTRIC W/BORE OF INNER RING WITHIN 0.002IN. TO 0.005 IN. TIR,FACES OF INNER RING SQ W/BORE WITHIN 0.0004 IN. TIR,FACES OF OUTER RING SQ W/OD WITHIN 0.0004 IN. TIR,PARALLELISM OF OUTER AND INNER RING SIDES WITHIN 0.0004 IN. TIR,ROCKWELL HARDNESS RATING OF BALL 58.0 TO 62.0,INNER AND OUTER RINGS 58.0 TO 64.0 C SCALE,RETAINER 55.0 TO 80.0 B SCALE,INNER AND OUTER RING RACEWAYS 5 TO 8 UIN AA,BALLS 1 UIN AA,OD SURFACE OF OUTER RING 15 TO 20 UIN AA,BORE SURFACE OF INNER RING 16 TO 20 UIN AA,CAGE POCKETS AND RETAINER BORE SURFACE 30 TO 125 UIN AA,INNER RING LIPS 10 TO 20 UIN AA,THE -04 BEARING HAS A DIFFERENT STYLE OUTER RING THAN THE -03 AND -05 BEARING
SPECIAL FEATURES: (FEAT) KSTABILIZED FOR OPERATION AT M65 DEG F TO P350 DEG F,RETAINER OD CONCENTRIC W/BORE OF INNER RING WITHIN 0.002IN. TO 0.005 IN. TIR,FACES OF INNER RING SQ W/BORE WITHIN 0.0004 IN. TIR,FACES OF OUTER RING SQ W/OD WITHIN 0.0004 IN. TIR,PARALLELISM OF OUTER AND INNER RING SIDES WITHIN 0.0004 IN. TIR,ROCKWELL HARDNESS RATING OF BALL 58.0 TO 62.0,INNER AND OUTER RINGS 58.0 TO 64.0 C SCALE,RETAINER 55.0 TO 80.0 B SCALE,INNER AND OUTER RING RACEWAYS 5 TO 8 UIN AA,BALLS 1 UIN AA,OD SURFACE OF OUTER RING 15 TO 20 UIN AA,BORE SURFACE OF INNER RING 16 TO 20 UIN AA,CAGE POCKETS AND RETAINER BORE SURFACE 30 TO 125 UIN AA,INNER RING LIPS 10 TO 20 UIN AA,THE -04 BEARING HAS A DIFFERENT STYLE OUTER RING THAN THE -03 AND -05 BEARING
SURFACE FINISH: (AGYE) GROUND
TEST DATA DOCUMENT: (TEST) +6903-91547 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).