PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1KU101Isolator,radio Frequency Reflect

Rantec Microwave Systems, Inc. Dba Rantec Microwave Systems Inc · NSN 5985-00-051-9095 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-051-9095 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-051-9095. Primary manufacturer part number: 1KU101.
Features
  • Isolator,radio Frequency Reflect — FSC 5985
  • Flange Connecting Hole Spacing: SPACED 0.994 IN.MIN AND 0.956 IN. MAX IN
  • Frequency Range Rating: +17.4 TO 17.6 GIGAHERTZ
  • FSC Application Data: ISOLATOR,ORADIOZFREQUENCY2REFLECTION,9RADAR,NONAIRBORNE,3EXCEPTOFIRE3CONTROLOANDZGUIDED-MISSILE
  • Flange Quantity: 2
  • Flange Type: COVER
  • Flange Connecting Hole Thread Size: 6-32
  • Length: 1.312 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Isolator,radio Frequency Reflect, cataloged under National Stock Number 5985-00-051-9095, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Rantec Microwave Systems, Inc. Dba Rantec Microwave Systems Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-051-9095
Primary Part Number1KU101
Item NameIsolator,radio Frequency Reflect
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerRantec Microwave Systems, Inc. Dba Rantec Microwave Systems Inc
StatusACTIVE
Flange Connecting Hole SpacingSPACED 0.994 IN.MIN AND 0.956 IN. MAX IN
Frequency Range Rating+17.4 TO 17.6 GIGAHERTZ
FSC Application DataISOLATOR,ORADIOZFREQUENCY2REFLECTION,9RADAR,NONAIRBORNE,3EXCEPTOFIRE3CONTROLOANDZGUIDED-MISSILE
Flange Quantity2
Flange TypeCOVER
Flange Connecting Hole Thread Size6-32
Length1.312 INCHES NOMINAL IN
Flange Connection Facility Quantity4
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5905-00-194-8405 INTERCHANGEABLE
Resistor,fixed,film
4730-00-356-131021737 INTERCHANGEABLE
Elbow,air Cleaner
Briggs and Stratton Corp
3020-00-948-715021737 INTERCHANGEABLE
Gear,spur
Mason Electric Co. Dba Mason Controls
5895-01-096-234821737 INTERCHANGEABLE
Rear Connector Hous
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
Cross-Reference Index
Part NumberManufacturer
1KU101 PRIMARY Rantec Microwave Systems, Inc. Dba Rantec Microwave Systems Inc (USA)
21737 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
21737REVD Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
Related Parts
5905-00-194-8405INTERCHANGEABLE
RESISTOR,FIXED,FILM
4730-00-356-1310INTERCHANGEABLE
ELBOW,AIR CLEANER
21737
3020-00-948-7150INTERCHANGEABLE
GEAR,SPUR
21737
5895-01-096-2348INTERCHANGEABLE
REAR CONNECTOR HOUS
21737

Frequently Asked Questions

What is NSN 5985-00-051-9095?

NSN 5985-00-051-9095 is a Isolator,radio Frequency Reflect, manufactured by Rantec Microwave Systems, Inc. Dba Rantec Microwave Systems Inc, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-051-9095?

NSN 5985-00-051-9095 has 3 cross-referenced part numbers: 1KU101 (Rantec Microwave Systems, Inc. Dba Rantec Microwave Systems Inc), 21737 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 21737REVD (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin).

What NSN replaces 5985-00-051-9095?

There are 4 known substitutes for 5985-00-051-9095: 5905-00-194-8405, 4730-00-356-1310, 3020-00-948-7150 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1KU101?

Key specifications for 1KU101: Flange Connecting Hole Spacing: SPACED 0.994 IN.MIN AND 0.956 IN. MAX IN; Frequency Range Rating: +17.4 TO 17.6 GIGAHERTZ; Overall Height: 1.950 INCHES NOMINAL IN; FSC Application Data: ISOLATOR,ORADIOZFREQUENCY2REFLECTION,9RADAR,NONAIRBORNE,3EXCEPTOFIRE3CONTROLOANDZGUIDED-MISSILE. 11 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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