PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3906Holder,optical Element

Parker-Hannifin Corporation Div Electromechanical Automation Division · NSN 6650-01-376-1661 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-01-376-1661 — this item is cataloged by the U.S. Government under National Stock Number 6650-01-376-1661. Primary manufacturer part number: 3906.
Features
  • Holder,optical Element — FSC 6650
  • Material: ALUMINUM ALLOY AND STEEL CORROSION RESISTING
  • Surface Treatment: ANODIZE
  • Attachment to Item Supported Method: 6 (SIX) HOLES NO. 4-40 THREAD
  • Supporting Object/surface Attachment Method: 2 (TWO) HOLES COUNTERBORED FOR NO. 4 S.H.C. SCREWS
  • 1 verified cross-reference
  • Primary manufacturer: Parker-Hannifin Corporation Div Electromechanical Automation Division
Applications
  • Applications requiring Aluminum Alloy and Steel Corrosion Resisting construction
General Description

The Holder,optical Element, cataloged under National Stock Number 6650-01-376-1661, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Parker-Hannifin Corporation Div Electromechanical Automation Division. Government technical data includes 4 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6650-01-376-1661
Primary Part Number3906
Item NameHolder,optical Element
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerParker-Hannifin Corporation Div Electromechanical Automation Division
StatusACTIVE
MaterialALUMINUM ALLOY AND STEEL CORROSION RESISTING
Surface TreatmentANODIZE
Attachment to Item Supported Method6 (SIX) HOLES NO. 4-40 THREAD
Supporting Object/surface Attachment Method2 (TWO) HOLES COUNTERBORED FOR NO. 4 S.H.C. SCREWS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5331-00-165-1981AS3581-906 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5985-00-264-55043096 INTERCHANGEABLE
Coupler,directional
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
4720-00-486-8211 INTERCHANGEABLE
Hose Assembly,nonmetallic
5331-00-776-0580CA030044 INTERCHANGEABLE
O-Ring
Evans Tempcon Michigan, Llc
2530-01-005-26073900-214 INTERCHANGEABLE
Tie Rod,steering
Pdi Ground Support Systems, Inc.
2530-01-037-50303900-175 INTERCHANGEABLE
Tie Rod,steering
Pdi Ground Support Systems, Inc.
5330-01-073-00323-906 INTERCHANGEABLE
Gasket
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
2530-01-113-20033900-147 INTERCHANGEABLE
Tie Rod,steering
Pdi Ground Support Systems, Inc.
3110-01-115-5105 INTERCHANGEABLE
Bearing,ball,thrust
2530-01-123-01013900-291 INTERCHANGEABLE
Tie Rod,steering
Pdi Ground Support Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
3906 PRIMARY Parker-Hannifin Corporation Div Electromechanical Automation Division (USA)
Related Parts
5331-00-165-1981INTERCHANGEABLE
O-RING
AS3581-906
5985-00-264-5504INTERCHANGEABLE
COUPLER,DIRECTIONAL
3096
4720-00-486-8211INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
5331-00-776-0580INTERCHANGEABLE
O-RING
CA030044
2530-01-005-2607INTERCHANGEABLE
TIE ROD,STEERING
3900-214
2530-01-037-5030INTERCHANGEABLE
TIE ROD,STEERING
3900-175
5330-01-073-0032INTERCHANGEABLE
GASKET
3-906
2530-01-113-2003INTERCHANGEABLE
TIE ROD,STEERING
3900-147
3110-01-115-5105INTERCHANGEABLE
BEARING,BALL,THRUST
2530-01-123-0101INTERCHANGEABLE
TIE ROD,STEERING
3900-291
2530-01-143-9118INTERCHANGEABLE
TIE ROD,STEERING
3900-233
5950-01-369-7574INTERCHANGEABLE
TRANSFORMER,POWER
3906

Frequently Asked Questions

What is NSN 6650-01-376-1661?

NSN 6650-01-376-1661 is a Holder,optical Element, manufactured by Parker-Hannifin Corporation Div Electromechanical Automation Division, classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-01-376-1661?

NSN 6650-01-376-1661 has 1 cross-referenced part number: 3906 (Parker-Hannifin Corporation Div Electromechanical Automation Division).

What NSN replaces 6650-01-376-1661?

There are 12 known substitutes for 6650-01-376-1661: 5331-00-165-1981, 5985-00-264-5504, 4720-00-486-8211 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3906?

Key specifications for 3906: Special Features: ENGLISH MICROMETER; ACCURACY: 0.00008 IN./IN. OF TRAVEL IN; Overall Width: 1.250 INCHES NOMINAL IN; Material: ALUMINUM ALLOY AND STEEL CORROSION RESISTING; Surface Treatment: ANODIZE. 8 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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