PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G1156Bearing,sleeve

Amca Intl Corp Amclyde Engineered Products Div · NSN 3120-00-287-9990 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-287-9990 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-287-9990. Primary manufacturer part number: G1156.
Features
  • Bearing,sleeve — FSC 3120
  • Body Outside Diameter: 1.3140 INCHES MINIMUM AND 1.3150 INCHES MAXIMUM IN
  • Hole Diameter: 0.2500 INCHES NOMINAL FIRST IN
  • Body Inside Diameter: 0.9375 INCHES MINIMUM AND 0.9380 INCHES MAXIMUM IN
  • Material Document and Classification: MIL-B-16261 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: COPPER ALLOY 910 OVERALL
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Antirotation/lubrication Type and Quantity: 1 HOLE
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 910 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-287-9990, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Amca Intl Corp Amclyde Engineered Products Div. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-287-9990
Primary Part NumberG1156
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerAmca Intl Corp Amclyde Engineered Products Div
StatusACTIVE
Body Outside Diameter1.3140 INCHES MINIMUM AND 1.3150 INCHES MAXIMUM IN
Hole Diameter0.2500 INCHES NOMINAL FIRST IN
Body Inside Diameter0.9375 INCHES MINIMUM AND 0.9380 INCHES MAXIMUM IN
Material Document and ClassificationMIL-B-16261 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialCOPPER ALLOY 910 OVERALL
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Antirotation/lubrication Type and Quantity1 HOLE
Corner ShapeSQUARE ALL CORNERS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3020-00-236-646864S11-56A6-4 INTERCHANGEABLE
Gear,spur
Raytheon Co
Cross-Reference Index
Part NumberManufacturer
G1156 Amca Intl Corp Amclyde Engineered Products Div
3120002879990 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
3120002879990 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
Related Parts
3020-00-236-6468INTERCHANGEABLE
GEAR,SPUR
64S11-56A6-4

Frequently Asked Questions

What is NSN 3120-00-287-9990?

NSN 3120-00-287-9990 is a Bearing,sleeve, manufactured by Amca Intl Corp Amclyde Engineered Products Div, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-287-9990?

NSN 3120-00-287-9990 has 3 cross-referenced part numbers: G1156 (Amca Intl Corp Amclyde Engineered Products Div), 3120002879990 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee), 3120002879990 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales).

What NSN replaces 3120-00-287-9990?

There is 1 known substitute for 3120-00-287-9990: 3020-00-236-6468. Verify interchangeability with system specifications before substitution.

What are the specifications of G1156?

Key specifications for G1156: Body Outside Diameter: 1.3140 INCHES MINIMUM AND 1.3150 INCHES MAXIMUM IN; Hole Diameter: 0.2500 INCHES NOMINAL FIRST IN; Body Inside Diameter: 0.9375 INCHES MINIMUM AND 0.9380 INCHES MAXIMUM IN; Overall Length: 1.1875 INCHES NOMINAL IN. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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