PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5256-1Roller,linear-Rotary Motion

Eaton Aviation Corporation · NSN 3120-01-438-5938 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-438-5938 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-438-5938. Primary manufacturer part number: 5256-1.
Features
  • Roller,linear-Rotary Motion — FSC 3120
  • Bore Inside Diameter: 0.9842 INCHES NOMINAL IN
  • Face Width: 0.9840 INCHES NOMINAL IN
  • Outside Diameter: 2.04700 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Aviation Corporation
Applications
  • Industrial machinery bearing replacement
  • Motor and pump shaft assemblies
  • HVAC blower and fan assemblies
General Description

The Roller,linear-Rotary Motion, cataloged under National Stock Number 3120-01-438-5938, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Eaton Aviation Corporation. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-438-5938
Primary Part Number5256-1
Item NameRoller,linear-Rotary Motion
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerEaton Aviation Corporation
StatusACTIVE
Bore Inside Diameter0.9842 INCHES NOMINAL IN
Face Width0.9840 INCHES NOMINAL IN
Outside Diameter2.04700 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5998-00-007-86995256-1 INTERCHANGEABLE
Circuit Card Assembly
General Microwave Corporation Div Kratos Microwave Electronics
5310-00-590-8021SMB157240 INTERCHANGEABLE
Nut Strip
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5950-00-591-763752561 INTERCHANGEABLE
Transformer
Stewart & Stevenson Power Products Llc
6105-00-798-26665256 INTERCHANGEABLE
Parts Kit,electric Motor
Hydro-Aire Aerospace Corp
Cross-Reference Index
Part NumberManufacturer
5256-1 Eaton Aviation Corporation (USA)
Related Parts
5998-00-007-8699INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5256-1
5310-00-590-8021INTERCHANGEABLE
NUT STRIP
SMB157240
5950-00-591-7637INTERCHANGEABLE
TRANSFORMER
52561
6105-00-798-2666INTERCHANGEABLE
PARTS KIT,ELECTRIC MOTOR
5256

Frequently Asked Questions

What is NSN 3120-01-438-5938?

NSN 3120-01-438-5938 is a Roller,linear-Rotary Motion, manufactured by Eaton Aviation Corporation, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-438-5938?

NSN 3120-01-438-5938 has 1 cross-referenced part number: 5256-1 (Eaton Aviation Corporation).

What NSN replaces 3120-01-438-5938?

There are 4 known substitutes for 3120-01-438-5938: 5998-00-007-8699, 5310-00-590-8021, 5950-00-591-7637 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5256-1?

Key specifications for 5256-1: Bore Inside Diameter: 0.9842 INCHES NOMINAL IN; Face Width: 0.9840 INCHES NOMINAL IN; Outside Diameter: 2.04700 INCHES NOMINAL IN. 3 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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