PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21370Coil,radio Frequency

Frontgrade Technologies Inc. · NSN 5950-00-645-9445 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-9445 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-9445. Primary manufacturer part number: 21370.
Features
  • Coil,radio Frequency — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Body Length: 2.580 INCHES MINIMUM AND 2.590 INCHES MAXIMUM IN
  • Mounting Hole Diameter: 0.170 INCHES NOMINAL SINGLE GROUP IN
  • Body Width: 2.230 INCHES MINIMUM AND 2.240 INCHES MAXIMUM IN
  • Mounting Facility Quantity: 2 SINGLE GROUP
  • Terminal Type and Quantity: 2 WIRE LEAD
  • Body Height: 0.992 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coil,radio Frequency, cataloged under National Stock Number 5950-00-645-9445, 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 Frontgrade Technologies Inc.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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
NSN5950-00-645-9445
Primary Part Number21370
Item NameCoil,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFrontgrade Technologies Inc.
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Body Length2.580 INCHES MINIMUM AND 2.590 INCHES MAXIMUM IN
Mounting Hole Diameter0.170 INCHES NOMINAL SINGLE GROUP IN
Body Width2.230 INCHES MINIMUM AND 2.240 INCHES MAXIMUM IN
Mounting Facility Quantity2 SINGLE GROUP
Terminal Type and Quantity2 WIRE LEAD
Body Height0.992 INCHES NOMINAL IN
Core ConstructionLAMINATED SINGLE COMPONENT
Coil Form TypeHOLLOW SINGLE COMPONENT
Turn Quantity2450 SINGLE COMPONENT SINGLE WINDING
Distance Between Mounting Facility Centers2.078 INCHES MINIMUM AND 2.082 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Conductor Size0.00397 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN
Inclosure TypeOPEN
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3120-00-354-6403 INTERCHANGEABLE
Bearing,sleeve
5365-00-499-294021370 INTERCHANGEABLE
Plug,machine Thread
Arvinmeritor Inc
6520-01-316-617221370 INTERCHANGEABLE
Cement,zinc Oxide and Iron,denta
Kerr Corporation
4820-01-501-910921370-001 INTERCHANGEABLE
Valve Assembly
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
5930-01-541-218621-370 INTERCHANGEABLE
Switch,electronic
Meritor Specialty Products Llc
Cross-Reference Index
Part NumberManufacturer
21370 PRIMARY Frontgrade Technologies Inc. (USA)
21370 Atlantic Microwave Corporation Div Cobham Electronic Systems (USA)
21370 Litton Systems Inc Airtron Div (USA)
Related Parts
3120-00-354-6403INTERCHANGEABLE
BEARING,SLEEVE
5365-00-499-2940INTERCHANGEABLE
PLUG,MACHINE THREAD
21370
6520-01-316-6172INTERCHANGEABLE
CEMENT,ZINC OXIDE AND IRON,DENTA
21370
4820-01-501-9109INTERCHANGEABLE
VALVE ASSEMBLY
21370-001
5930-01-541-2186INTERCHANGEABLE
SWITCH,ELECTRONIC
21-370

Frequently Asked Questions

What is NSN 5950-00-645-9445?

NSN 5950-00-645-9445 is a Coil,radio Frequency, manufactured by Frontgrade Technologies Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-645-9445?

NSN 5950-00-645-9445 has 3 cross-referenced part numbers: 21370 (Frontgrade Technologies Inc.), 21370 (Atlantic Microwave Corporation Div Cobham Electronic Systems), 21370 (Litton Systems Inc Airtron Div).

What NSN replaces 5950-00-645-9445?

There are 5 known substitutes for 5950-00-645-9445: 3120-00-354-6403, 5365-00-499-2940, 6520-01-316-6172 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21370?

Key specifications for 21370: Reliability Indicator: NOT ESTABLISHED; Body Length: 2.580 INCHES MINIMUM AND 2.590 INCHES MAXIMUM IN; Mounting Hole Diameter: 0.170 INCHES NOMINAL SINGLE GROUP IN; Body Width: 2.230 INCHES MINIMUM AND 2.240 INCHES MAXIMUM IN. 15 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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