PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30640Roller,linear-Rotary Motion

Saginaw Products Corporation Dba Cignys · NSN 3120-00-901-3217 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-901-3217 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-901-3217. Primary manufacturer part number: 30640.
Features
  • Roller,linear-Rotary Motion — FSC 3120
  • Material: STEEL COMP 8620
  • Casehardening Indicator: CASEHARDENED
  • Face Width: 0.230 INCHES NOMINAL IN
  • Outside Diameter: 0.500 INCHES NOMINAL IN
  • Bore Inside Diameter: 0.1895 INCHES NOMINAL IN
  • Metallic Hardness Rating: 58.0 NOMINAL ROCKWELL C
  • Material Document and Classification: QQ-S-624,FS8620 FED SPEC SINGLE MATERIAL RESPONSE
Applications
  • Applications requiring Steel Comp 8620 construction
General Description

The Roller,linear-Rotary Motion, cataloged under National Stock Number 3120-00-901-3217, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Saginaw Products Corporation Dba Cignys. 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-901-3217
Primary Part Number30640
Item NameRoller,linear-Rotary Motion
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerSaginaw Products Corporation Dba Cignys
StatusACTIVE
MaterialSTEEL COMP 8620
Casehardening IndicatorCASEHARDENED
Face Width0.230 INCHES NOMINAL IN
Outside Diameter0.500 INCHES NOMINAL IN
Bore Inside Diameter0.1895 INCHES NOMINAL IN
Metallic Hardness Rating58.0 NOMINAL ROCKWELL C
Material Document and ClassificationQQ-S-624,FS8620 FED SPEC SINGLE MATERIAL RESPONSE
Style DesignatorPLAIN
FSC Application DataLAUNCH FACILITY PERSONNEL ACCESS SYSTEMS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
8115-00-079-882524X12.5X10SWDOM275 INTERCHANGEABLE
Box,shipping
Ponderosa Packaging Corp.
3455-00-236-237719647 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
2805-00-354-0904 INTERCHANGEABLE
Tappee,valve
5930-01-129-2068A30640 INTERCHANGEABLE
Switch,flow
Setra Systems, Inc. Dba Gems Sensors
1005-01-688-199330640 INTERCHANGEABLE
Guide,bore Rod
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
30640 PRIMARY Saginaw Products Corporation Dba Cignys (USA)
Related Parts
8115-00-079-8825INTERCHANGEABLE
BOX,SHIPPING
24X12.5X10SWDOM275
3455-00-236-2377INTERCHANGEABLE
REAMER,MACHINE
19647
2805-00-354-0904INTERCHANGEABLE
TAPPEE,VALVE
5930-01-129-2068INTERCHANGEABLE
SWITCH,FLOW
A30640
1005-01-688-1993INTERCHANGEABLE
GUIDE,BORE ROD
30640

Frequently Asked Questions

What is NSN 3120-00-901-3217?

NSN 3120-00-901-3217 is a Roller,linear-Rotary Motion, manufactured by Saginaw Products Corporation Dba Cignys, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-901-3217?

NSN 3120-00-901-3217 has 1 cross-referenced part number: 30640 (Saginaw Products Corporation Dba Cignys).

What NSN replaces 3120-00-901-3217?

There are 5 known substitutes for 3120-00-901-3217: 8115-00-079-8825, 3455-00-236-2377, 2805-00-354-0904 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30640?

Key specifications for 30640: Material: STEEL COMP 8620; Casehardening Indicator: CASEHARDENED; Face Width: 0.230 INCHES NOMINAL IN; Outside Diameter: 0.500 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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