PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B2508-4Coil,radio Frequency

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple · NSN 5950-00-645-3918 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-3918 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-3918. Primary manufacturer part number: B2508-4.
Features
  • Coil,radio Frequency — FSC 5950
  • Inclosure Type: OPEN
  • Reliability Indicator: NOT ESTABLISHED
  • Coil Form Type: HOLLOW SINGLE COMPONENT
  • Mounting Method: THREADED BUSHING SINGLE GROUP
  • Adjustment Device Drive Type: SLOTTED SCREW SINGLE COMPONENT
  • Rating Method: WINDING TURNS SINGLE COMPONENT SINGLE WINDING
  • Thread Quantity Per Inch: 20 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 5950-00-645-3918, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-645-3918
Primary Part NumberB2508-4
Item NameCoil,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
StatusCANCELLED
Inclosure TypeOPEN
Reliability IndicatorNOT ESTABLISHED
Coil Form TypeHOLLOW SINGLE COMPONENT
Mounting MethodTHREADED BUSHING SINGLE GROUP
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Rating MethodWINDING TURNS SINGLE COMPONENT SINGLE WINDING
Thread Quantity Per Inch20 SINGLE GROUP
Thread Series DesignatorUNF SINGLE GROUP
Turn Quantity4-1/2 SINGLE COMPONENT SINGLE WINDING
Winding Conductor Size0.02535 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN
Inductance Rating0.40 MICROHENRIES MINIMUM AND 0.74 MICROHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
Core ConstructionPOWDERED SINGLE COMPONENT
Body Outside Diameter0.812 INCHES NOMINAL IN
Nominal Thread Size0.437 INCHES SINGLE GROUP IN
Terminal Type and Quantity2 WIRE LEAD
Body Length1.625 INCHES NOMINAL IN
Adjustment Method and Quantity1 ADJUSTABLE CORE SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5133-00-189-9314 INTERCHANGEABLE
Drill,twist
5930-00-224-566814824 INTERCHANGEABLE
Switch,push-Pull
Camdec Corp
2920-00-242-9501MRD4A302 INTERCHANGEABLE
Magneto,ignition
United Technologies Corp Electro Systems Inc
5935-00-270-4417GC810GL2 INTERCHANGEABLE
Connector,plug,electrical
Northrop Grumman Systems Corporation
3110-00-554-2928058-1REVD INTERCHANGEABLE
Bearing,ball,annular
Lockheed Martin Corporation Div Rms - Mitchel Field
5930-00-802-8470 INTERCHANGEABLE
Switch,thermostatic
4730-01-538-2520 INTERCHANGEABLE
Adapter,fitting,lubrication
4030-01-716-432185246 INTERCHANGEABLE
Hook,release
Aerovironment, Inc.
Cross-Reference Index
Part NumberManufacturer
85246 Wurlitzer Co the (USA)
B2508-4 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
B2508-4 Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
2508-4 Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
2508-4 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
2508-4 Scomill Inc (USA)
B2508-4 Scomill Inc (USA)
Related Parts
5133-00-189-9314INTERCHANGEABLE
DRILL,TWIST
5930-00-224-5668INTERCHANGEABLE
SWITCH,PUSH-PULL
14824
2920-00-242-9501INTERCHANGEABLE
MAGNETO,IGNITION
MRD4A302
5935-00-270-4417INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
GC810GL2
3110-00-554-2928INTERCHANGEABLE
BEARING,BALL,ANNULAR
058-1REVD
5930-00-802-8470INTERCHANGEABLE
SWITCH,THERMOSTATIC
4730-01-538-2520INTERCHANGEABLE
ADAPTER,FITTING,LUBRICATION
4030-01-716-4321INTERCHANGEABLE
HOOK,RELEASE
85246

Frequently Asked Questions

What is NSN 5950-00-645-3918?

NSN 5950-00-645-3918 is a Coil,radio Frequency, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-645-3918?

NSN 5950-00-645-3918 has 7 cross-referenced part numbers: 85246 (Wurlitzer Co the), B2508-4 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), B2508-4 (Northrop Grumman Systems Corporation Div Es Defensive Systems Division), 2508-4 (Northrop Grumman Systems Corporation Div Es Defensive Systems Division), 2508-4 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple) and 2 more.

What NSN replaces 5950-00-645-3918?

There are 8 known substitutes for 5950-00-645-3918: 5133-00-189-9314, 5930-00-224-5668, 2920-00-242-9501 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B2508-4?

Key specifications for B2508-4: Inclosure Type: OPEN; Reliability Indicator: NOT ESTABLISHED; Coil Form Type: HOLLOW SINGLE COMPONENT; Mounting Method: THREADED BUSHING SINGLE GROUP. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-645-3918 still in active supply?

NSN 5950-00-645-3918 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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