PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

K1-4Hub,body

Roller Bearing Co of America, Inc Div Pic Design · NSN 3040-00-758-1989 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-758-1989 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-758-1989. Primary manufacturer part number: K1-4.
Features
  • Hub,body — FSC 3040
  • Shoulder Outside Diameter: 0.437 INCHES NOMINAL IN
  • Hub Inside Diameter: 0.187 INCHES NOMINAL IN
  • Style Designator: SINGLE HUB W/ SECURING HOLE(S)
  • Material Document and Classification: COMP 303 FED SPEC SINGLE MATERIAL RESPONSE
  • Material: STEEL
  • First End Hub Outside Diameter: 0.375 INCHES NOMINAL IN
  • Shoulder Width: 0.220 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Hub,body, cataloged under National Stock Number 3040-00-758-1989, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 9 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-00-758-1989
Primary Part NumberK1-4
Item NameHub,body
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusACTIVE
Shoulder Outside Diameter0.437 INCHES NOMINAL IN
Hub Inside Diameter0.187 INCHES NOMINAL IN
Style DesignatorSINGLE HUB W/ SECURING HOLE(S)
Material Document and ClassificationCOMP 303 FED SPEC SINGLE MATERIAL RESPONSE
MaterialSTEEL
First End Hub Outside Diameter0.375 INCHES NOMINAL IN
Shoulder Width0.220 INCHES NOMINAL IN
Surface TreatmentPASSIVATE
Distance From First End Hub to Shoulder0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5120-00-142-3754K14 INTERCHANGEABLE
Blade,rivnut Key Se
Goodrich Corporation
5120-01-057-0151M-1/4 INTERCHANGEABLE
Holder,sheet Metal,hole
Monogram Aerospace Fasteners, Inc Dba Trimas Aerospace Div Monogram Aerospace Fasteners
3040-01-283-5095K-14 INTERCHANGEABLE
Cylinder Assembly,actuating,line
Hynautic Inc Div of Sta-Rite Industries Inc
Cross-Reference Index
Part NumberManufacturer
K1-4 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
Related Parts
5120-00-142-3754INTERCHANGEABLE
BLADE,RIVNUT KEY SE
K14
5120-01-057-0151INTERCHANGEABLE
HOLDER,SHEET METAL,HOLE
M-1/4
3040-01-283-5095INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
K-14

Frequently Asked Questions

What is NSN 3040-00-758-1989?

NSN 3040-00-758-1989 is a Hub,body, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-758-1989?

NSN 3040-00-758-1989 has 1 cross-referenced part number: K1-4 (Roller Bearing Co of America, Inc Div Pic Design).

What NSN replaces 3040-00-758-1989?

There are 3 known substitutes for 3040-00-758-1989: 5120-00-142-3754, 5120-01-057-0151, 3040-01-283-5095. Verify interchangeability with system specifications before substitution.

What are the specifications of K1-4?

Key specifications for K1-4: Shoulder Outside Diameter: 0.437 INCHES NOMINAL IN; Hub Inside Diameter: 0.187 INCHES NOMINAL IN; Style Designator: SINGLE HUB W/ SECURING HOLE(S); Material Document and Classification: COMP 303 FED SPEC SINGLE MATERIAL RESPONSE. 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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