PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9551Insulator,feedthru

Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron · NSN 5970-00-841-1255 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-841-1255 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-841-1255. Primary manufacturer part number: 9551.
Features
  • Insulator,feedthru — FSC 5970
  • Shank Outside Diameter: 0.844 INCHES NOMINAL IN
  • Screw Thread Series Designator and Location: CENTER STUD UNIFIED NATIONAL COARSE (UNC)
  • Base Diameter: 0.625 INCHES NOMINAL IN
  • Height Above Mounting Surface: 0.812 INCHES NOMINAL IN
  • Thread Class and Location: 2A CENTER STUD A
  • Electrical Termination Quantity: 2
  • Mounting Facility Type and Quantity: 1 THREADED STUD(S)
Applications
  • Applications requiring Ceramic Overall construction
General Description

The Insulator,feedthru, cataloged under National Stock Number 5970-00-841-1255, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, 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
NSN5970-00-841-1255
Primary Part Number9551
Item NameInsulator,feedthru
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerHalsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
StatusACTIVE
Shank Outside Diameter0.844 INCHES NOMINAL IN
Screw Thread Series Designator and LocationCENTER STUD UNIFIED NATIONAL COARSE (UNC)
Base Diameter0.625 INCHES NOMINAL IN
Height Above Mounting Surface0.812 INCHES NOMINAL IN
Thread Class and Location2A CENTER STUD A
Electrical Termination Quantity2
Mounting Facility Type and Quantity1 THREADED STUD(S)
Screw Thread Diameter and Location0.190 CENTER STUD INCHES NOMINAL
Screw Thread Quantity Per Inch and Location32 CENTER STUD
MaterialCERAMIC OVERALL
Surface Treatment and LocationOVERALL GLAZED
Style DesignatorBUSHING
Outside Diameter1.250 INCHES NOMINAL IN
Identification Code ColorWHITE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-038-8286860969 INTERCHANGEABLE
Reactor
Raytheon Company Dba Raytheon
2810-00-048-6230 INTERCHANGEABLE
Flange
4130-00-088-6787 INTERCHANGEABLE
Heat Exchanger,air Conditioner
5950-00-159-0675 INTERCHANGEABLE
Reactor
5950-00-220-991413551 INTERCHANGEABLE
Reactor
Magnetika Inc
5935-00-283-3360213498-1 INTERCHANGEABLE
Connector,receptacle,electrical
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6350-00-389-459045545 INTERCHANGEABLE
Valve,main
Leslie Controls, Inc. Dba Leslie Controls Inc
5999-00-504-3095301RED INTERCHANGEABLE
Clip,electrical
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
3110-00-555-5339 INTERCHANGEABLE
Bearing,ball,annular
3030-00-844-278413551 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
Cross-Reference Index
Part NumberManufacturer
1241311 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
158-0269-001 Raytheon Company (USA)
9551 PRIMARY Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron (USA)
135-51 Viking Technologies, Ltd. (USA)
9551 Dialight Corporation (USA)
Related Parts
5950-00-038-8286INTERCHANGEABLE
REACTOR
860969
2810-00-048-6230INTERCHANGEABLE
FLANGE
4130-00-088-6787INTERCHANGEABLE
HEAT EXCHANGER,AIR CONDITIONER
5950-00-159-0675INTERCHANGEABLE
REACTOR
5950-00-220-9914INTERCHANGEABLE
REACTOR
13551
5935-00-283-3360INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
213498-1
6350-00-389-4590INTERCHANGEABLE
VALVE,MAIN
45545
5999-00-504-3095INTERCHANGEABLE
CLIP,ELECTRICAL
301RED
3110-00-555-5339INTERCHANGEABLE
BEARING,BALL,ANNULAR
3030-00-844-2784INTERCHANGEABLE
BELT,V
13551
5330-00-860-6028INTERCHANGEABLE
GASKET,OIL LINE
124131-1
3010-01-102-9100INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
50628-71

Frequently Asked Questions

What is NSN 5970-00-841-1255?

NSN 5970-00-841-1255 is a Insulator,feedthru, manufactured by Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-00-841-1255?

NSN 5970-00-841-1255 has 5 cross-referenced part numbers: 1241311 (Lockheed Martin Corporation Div Rms - Mitchel Field), 158-0269-001 (Raytheon Company), 9551 (Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron), 135-51 (Viking Technologies, Ltd.), 9551 (Dialight Corporation).

What NSN replaces 5970-00-841-1255?

There are 12 known substitutes for 5970-00-841-1255: 5950-00-038-8286, 2810-00-048-6230, 4130-00-088-6787 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9551?

Key specifications for 9551: Shank Outside Diameter: 0.844 INCHES NOMINAL IN; Screw Thread Series Designator and Location: CENTER STUD UNIFIED NATIONAL COARSE (UNC); Base Diameter: 0.625 INCHES NOMINAL IN; Height Above Mounting Surface: 0.812 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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