PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4551Coil,radio Frequency

Bell Industries Inc J W Miller Magnetics Div · NSN 5950-00-645-3691 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-3691 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-3691. Primary manufacturer part number: 4551.
Features
  • Coil,radio Frequency — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Distance Between Mounting Facility Centers: 2.388 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Inductance Rating: 4.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Body Length: 2.500 INCHES NOMINAL IN
  • Terminal Type and Quantity: 2 TAB, SOLDER LUG
  • DC Resistance Rating in Ohms: 12.000 SINGLE COMPONENT SINGLE WINDING
  • Mounting Facility Quantity: 2 SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coil,radio Frequency, cataloged under National Stock Number 5950-00-645-3691, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Bell Industries Inc J W Miller Magnetics Div. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-645-3691
Primary Part Number4551
Item NameCoil,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerBell Industries Inc J W Miller Magnetics Div
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Distance Between Mounting Facility Centers2.388 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inductance Rating4.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Body Length2.500 INCHES NOMINAL IN
Terminal Type and Quantity2 TAB, SOLDER LUG
DC Resistance Rating in Ohms12.000 SINGLE COMPONENT SINGLE WINDING
Mounting Facility Quantity2 SINGLE GROUP
Inclosure TypeOPEN
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Operating Current400.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Mounting Hole Diameter0.125 INCHES NOMINAL SINGLE GROUP IN
Coil Form TypeSOLID SINGLE COMPONENT
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Overall Diameter0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5940-00-082-4665 INTERCHANGEABLE
Terminal Board
5999-00-220-97574551 INTERCHANGEABLE
Clip,electrical
Cooper Bussmann, Llc Dba Cooper Industries
6240-00-583-3334Q4551 INTERCHANGEABLE
Lamp,incandescent
Amglo Kemlite Laboratories Inc
2805-00-741-1712904P INTERCHANGEABLE
Piston,internal Combustion Engin
Federal-Mogul Corp Government Sales Dept
3110-01-015-57754551 INTERCHANGEABLE
Bearing,ball,stack
New Hampshire Ball Bearings Inc Div Hitech Division
5940-01-265-24384551 INTERCHANGEABLE
Terminal,stud
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
6810-01-370-42104551 INTERCHANGEABLE
Ion Exchange Compound
Sybron Chemicals Inc.
5306-01-481-55464551 INTERCHANGEABLE
Bolt,machine
Barnes Group Inc. Dba Barnes Distribution
6240-01-670-1658 INTERCHANGEABLE
Lamp,incandescent
1310-01-670-84354551 INTERCHANGEABLE
Cartridge,40 Millimeter,non-Leth
Combined Systems Inc
Cross-Reference Index
Part NumberManufacturer
4551 Bell Industries Inc J W Miller Magnetics Div (USA)
T5-10S Instruments and Flight Research, Inc. (USA)
Related Parts
5940-00-082-4665INTERCHANGEABLE
TERMINAL BOARD
5999-00-220-9757INTERCHANGEABLE
CLIP,ELECTRICAL
4551
6240-00-583-3334INTERCHANGEABLE
LAMP,INCANDESCENT
Q4551
2805-00-741-1712INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
904P
3110-01-015-5775INTERCHANGEABLE
BEARING,BALL,STACK
4551
5940-01-265-2438INTERCHANGEABLE
TERMINAL,STUD
4551
6810-01-370-4210INTERCHANGEABLE
ION EXCHANGE COMPOUND
4551
5306-01-481-5546INTERCHANGEABLE
BOLT,MACHINE
4551
6240-01-670-1658INTERCHANGEABLE
LAMP,INCANDESCENT
1310-01-670-8435INTERCHANGEABLE
CARTRIDGE,40 MILLIMETER,NON-LETH
4551

Frequently Asked Questions

What is NSN 5950-00-645-3691?

NSN 5950-00-645-3691 is a Coil,radio Frequency, manufactured by Bell Industries Inc J W Miller Magnetics Div, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-645-3691?

NSN 5950-00-645-3691 has 2 cross-referenced part numbers: 4551 (Bell Industries Inc J W Miller Magnetics Div), T5-10S (Instruments and Flight Research, Inc.).

What NSN replaces 5950-00-645-3691?

There are 10 known substitutes for 5950-00-645-3691: 5940-00-082-4665, 5999-00-220-9757, 6240-00-583-3334 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4551?

Key specifications for 4551: Reliability Indicator: NOT ESTABLISHED; Distance Between Mounting Facility Centers: 2.388 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Inductance Rating: 4.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING; Body Length: 2.500 INCHES NOMINAL IN. 14 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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