PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TWOLB-4Conduit Outlet

Killark Electric Mfg Co · NSN 5975-00-141-0546 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-141-0546 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-141-0546. Primary manufacturer part number: TWOLB-4.
Features
  • Conduit Outlet — FSC 5975
  • Conduit Entrance Type: HUB DRILLED ALL ENTRANCE
  • Cover Quantity: 1
  • Cover Opening Width: 1.938 INCHES NOMINAL IN
  • Cover Opening Length: 5.312 INCHES NOMINAL IN
  • Conduit Type Accommodated: RIGID METALLIC THINWALL ALL ENTRANCE
  • Mounting Method: THREADED FASTENER COVER
  • Conduit Trade Size Accommodated: 1.250 INCHES ALL ENTRANCE IN
Applications
  • Applications requiring Aluminum-Copper Free Overall construction
General Description

The Conduit Outlet, cataloged under National Stock Number 5975-00-141-0546, is classified within Federal Supply Class 5975 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Killark Electric Mfg Co. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 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
NSN5975-00-141-0546
Primary Part NumberTWOLB-4
Item NameConduit Outlet
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerKillark Electric Mfg Co
StatusACTIVE
Conduit Entrance TypeHUB DRILLED ALL ENTRANCE
Cover Quantity1
Cover Opening Width1.938 INCHES NOMINAL IN
Cover Opening Length5.312 INCHES NOMINAL IN
Conduit Type AccommodatedRIGID METALLIC THINWALL ALL ENTRANCE
Mounting MethodTHREADED FASTENER COVER
Conduit Trade Size Accommodated1.250 INCHES ALL ENTRANCE IN
Cover Mounting Hole Quantity2
Cover Mounting Hole Arrangement StyleLINE
Functional Cover StyleBLANK
Cover Mounting Gasket TypeSOLID CENTER
MaterialALUMINUM-COPPER FREE OVERALL
Trade DesignationLB SERIES MARK 9
Style DesignatorOBLONG
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5910-00-080-7413913-2998-000 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
3110-00-198-2169 INTERCHANGEABLE
Cone and Rollers,tapered Roller
3455-00-231-352209510 INTERCHANGEABLE
Cutter,milling,shell End
Niagara Cutter Inc
5950-00-231-4458304878 INTERCHANGEABLE
Transformer,audio Frequency
Naval Ship Systems Command
3030-00-326-527017503 INTERCHANGEABLE
Belts,v,matched Set
Leroi International Inc Dba Compair Leroi
3020-00-389-5061M15217 INTERCHANGEABLE
Gear,spur
Itw Food Equipment Group Llc Dba Hobart Service
5930-00-591-859215123 INTERCHANGEABLE
Retainer,electrical Switch
Microlab/fxr Llc
5950-00-701-0021TS-1052 INTERCHANGEABLE
Transformer,audio Frequency
Magnetic Components Inc
4710-00-758-928217503 INTERCHANGEABLE
Tube,bent,metallic
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5930-00-764-0860 INTERCHANGEABLE
Switch,toggle
Cross-Reference Index
Part NumberManufacturer
LB34 Bridgeport Fittings Inc (USA)
15-123 Efcor Inc
LB-49MT Crouse-Hinds Lighting (USA)
17503 Atlas Technologies Inc (USA)
ELB-13 Atlas Technologies Inc (USA)
LB49MT Crouse-Hinds Co (USA)
LB-100SS Egs Electric Co Llc (USA)
TWOLB-4 PRIMARY Killark Electric Mfg Co (USA)
Related Parts
5910-00-080-7413INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
913-2998-000
3110-00-198-2169INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
3455-00-231-3522INTERCHANGEABLE
CUTTER,MILLING,SHELL END
09510
5950-00-231-4458INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
304878
3030-00-326-5270INTERCHANGEABLE
BELTS,V,MATCHED SET
17503
3020-00-389-5061INTERCHANGEABLE
GEAR,SPUR
M15217
5930-00-591-8592INTERCHANGEABLE
RETAINER,ELECTRICAL SWITCH
15123
5950-00-701-0021INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
TS-1052
4710-00-758-9282INTERCHANGEABLE
TUBE,BENT,METALLIC
17503
5930-00-764-0860INTERCHANGEABLE
SWITCH,TOGGLE
5940-00-926-0030INTERCHANGEABLE
TERMINAL,FEEDTHRU
5940-00-926-0033INTERCHANGEABLE
TERMINAL,STUD

Frequently Asked Questions

What is NSN 5975-00-141-0546?

NSN 5975-00-141-0546 is a Conduit Outlet, manufactured by Killark Electric Mfg Co, classified under FSC 5975 (No Item Name Available). Status: active.

What are the part numbers for NSN 5975-00-141-0546?

NSN 5975-00-141-0546 has 8 cross-referenced part numbers: LB34 (Bridgeport Fittings Inc), 15-123 (Efcor Inc), LB-49MT (Crouse-Hinds Lighting), 17503 (Atlas Technologies Inc), ELB-13 (Atlas Technologies Inc) and 3 more.

What NSN replaces 5975-00-141-0546?

There are 12 known substitutes for 5975-00-141-0546: 5910-00-080-7413, 3110-00-198-2169, 3455-00-231-3522 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TWOLB-4?

Key specifications for TWOLB-4: Conduit Entrance Type: HUB DRILLED ALL ENTRANCE; Cover Quantity: 1; Overall Width: 2.188 INCHES NOMINAL IN; Cover Opening Width: 1.938 INCHES NOMINAL IN. 17 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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