NSN 3110-01-256-9277, 3110012569277
BEARING,ROLLER,NEEDLE

Federal Supply Classification: FSC 3110 - Bearings, Antifriction, Unmounted
National Item Identification Number: NIIN 012569277
Codification Country: United States
Item Name Code: INC 00051
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
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.

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DLMS^® Summary

National Stock Number 3110-01-256-9277

National Stock Number (NSN) 3110-01-256-9277, or NIIN 012569277, (bearing,roller,needle) was assigned June 10, 1987 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN.

This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Nov 15, 2011. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM4A612MBT59. The total value of the awarded contracts has been US$ 735.00.

This NSN is somewhat common among different platforms, belonging to 5 different weapons systems.

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 08, 2017, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is controlled by QPL procedures. Valid AMCs: 1 and 2.

This NSN is assigned to Item Name Code (INC) 00051. [A SINGLE OR MULTIPLE-ROW ANTIFRICTION BEARING USED WITH OR WITHOUT INNER OR OUTER RACES CHARACTERIZED BY RELATIVELY SMALL SIZE ROLLERS USUALLY NOT RANGING ABOVE 0.250 INCH (6.35MM) DIAMETER AND GENERALLY LONGER IN LENGTH IN RELATION TO DIAMETER.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3110012569277 does not contain precious metals.

This NSN is associated to Schedule B 8482400000: needle roller bearings. 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 Jun 01, 2025.

Technical Characteristics

LUBRICATION MATERIAL: (ADZG) GREASE
UNABLE TO DECODE: (ADZG) UNABLE TO DECODE
MATERIAL: (MATT) STEEL COMP E50100 RETAINING PLATE OR STEEL COMP E51100 RETAINING PLATE OR STEEL COMP E52100 RETAINING PLATE OR STEEL COMP 4615 RETAINING PLATE OR STEEL COMP 4617 RETAINING PLATE OR STEEL COMP 4620 RETAINING PLATE
MATERIAL: (MATT) STEEL COMP E50100 INNER RING OR STEEL COMP E51100 INNER RING OR STEEL COMP E52100 INNER RING OR STEEL COMP 4615 INNER RING OR STEEL COMP 4617 INNER RING OR STEEL COMP 4620 INNER RING
MATERIAL: (MATT) STEEL COMP E50100 OUTER RING OR STEEL COMP E51100 OUTER RING OR STEEL COMP E52100 OUTER RING OR STEEL COMP 4615 OUTER RING OR STEEL COMP 4617 OUTER RING OR STEEL COMP 4620 OUTER RING
ALIGNMENT TYPE: (AGZA) SELF-ALIGNING
BEARING SEAL TYPE: (AGYW) CONTACT
BORE DIAMETER: (ABXV) 0.4993 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM
CROWN RADIUS: (AGWG) 10.0000 INCHES NOMINAL
FEATURES PROVIDED: (CBBL) LUBRICATION HOLE AND LUBRICATION GROOVE
INNER RING WIDTH: (AGVU) 0.6150 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: (LMDC) MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
LUBRICATION MATERIAL: (LBMA) GREASE
OUTER RING WIDTH: (AGVT) 0.4850 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM
OVERALL OUTSIDE DIAMETER: (ADGA) 1.3115 INCHES MINIMUM AND 1.3135 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) L-P-392 FED SPEC 1ST MATERIAL RESPONSE OR L-P-410,TY 6/6 FED SPEC 2ND MATERIAL RESPONSE SEAL
MATERIAL: (MATT) PLASTIC ACETAL OR PLASTIC POLYHEXAMETHYLENE ADIPAMIDE SEAL
MATERIAL: (MATT) STEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OR STEEL COMP 4615 OR STEEL COMP 4617 OR STEEL COMP 4620 INNER RING
MATERIAL: (MATT) STEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OR STEEL COMP 4615 OR STEEL COMP 4617 OR STEEL COMP 4620 OUTER RING
MATERIAL: (MATT) STEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OR STEEL COMP 4615 OR STEEL COMP 4617 OR STEEL COMP 4620 RETAINING PLATE
SEAL QUANTITY: (AGYJ) 2
SELF-ALIGNMENT LOCATION: (AHAW) EXTERNAL
STYLE DESIGNATOR: (STYL) TRACK ROLLER
SURFACE FINISH: (AGYE) GROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) QQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) QQ-P-416,TYPE 1,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-13924 MIL SPEC 2ND TREATMENT RESPONSE INNER RING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) QQ-P-416,TYPE 1,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-13924 MIL SPEC 2ND TREATMENT RESPONSE RETAINING PLATE
SURFACE TREATMENT: (SFTT) CADMIUM OR OXIDE INNER RING
SURFACE TREATMENT: (SFTT) CADMIUM OR OXIDE RETAINING PLATE
SURFACE TREATMENT: (SFTT) CHROMIUM OUTER RING
MATERIAL: (MATT) PLASTIC ACETAL SEAL OR PLASTIC POLYHEXAMETHYLENE ADIPAMIDE SEAL
SURFACE TREATMENT: (SFTT) CADMIUM RETAINING PLATE OR OXIDE RETAINING PLATE
SURFACE TREATMENT: (SFTT) CADMIUM INNER RING OR OXIDE INNER RING