PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TWOLB-2Conduit Outlet

Killark Electric Mfg Co · NSN 5975-00-141-0051 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-141-0051 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-141-0051. Primary manufacturer part number: TWOLB-2.
Features
  • Conduit Outlet — FSC 5975
  • Cover Opening Length: 3.938 INCHES NOMINAL IN
  • Cover Quantity: 1
  • Style Designator: OBLONG
  • Functional Cover Style: BLANK
  • Trade Designation: LB SERIES MARK 9
  • Conduit Type Accommodated: RIGID METALLIC THINWALL ALL ENTRANCE
  • Cover Mounting Gasket Type: SOLID CENTER
Applications
  • Applications requiring Aluminum Overall construction
General Description

The Conduit Outlet, cataloged under National Stock Number 5975-00-141-0051, 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 7 commercial cross-references from 6 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
NSN5975-00-141-0051
Primary Part NumberTWOLB-2
Item NameConduit Outlet
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerKillark Electric Mfg Co
StatusACTIVE
Cover Opening Length3.938 INCHES NOMINAL IN
Cover Quantity1
Style DesignatorOBLONG
Functional Cover StyleBLANK
Trade DesignationLB SERIES MARK 9
Conduit Type AccommodatedRIGID METALLIC THINWALL ALL ENTRANCE
Cover Mounting Gasket TypeSOLID CENTER
Cover Mounting Hole Quantity2
MaterialALUMINUM OVERALL
Conduit Entrance TypeHUB DRILLED ALL ENTRANCE
Cover Opening Width1.375 INCHES NOMINAL IN
Cover Mounting Hole Arrangement StyleLINE
Conduit Trade Size Accommodated0.750 INCHES ALL ENTRANCE IN
Mounting MethodTHREADED FASTENER COVER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3010-00-102-42131750-1 INTERCHANGEABLE
Clutch,plate
Drs Signal Solutions, Inc.
6515-00-400-7501 INTERCHANGEABLE
Bag,reservoir,inhalation Therapy
4410-00-418-23341750-001-00 INTERCHANGEABLE
Gage and Valve Assembly
Qed Inc Dba Qed Inc
5340-00-426-30541573 INTERCHANGEABLE
Key Blank
Ni Industries Inc Hq Vernon Div
5930-00-655-1527 INTERCHANGEABLE
Switch,toggle
6610-00-680-8325649-0049-901 INTERCHANGEABLE
Case Assy,gyro Hori
Acron Aviation, Inc.
4710-00-756-086417501 INTERCHANGEABLE
Tube Assembly,metal
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
2940-00-891-19201573 INTERCHANGEABLE
Filter,fluid
Parker-Hannifin Corporation Dba Hydraulic Filter Division Div Hydraulic & Fuel Filter Division
5910-00-901-8796 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5330-01-044-740017501 INTERCHANGEABLE
Gasket
Tyco Fire Products Lp
Cross-Reference Index
Part NumberManufacturer
TWOLB-2 Killark Electric Mfg Co (USA)
LB29MT Crouse-Hinds Co (USA)
15-73 Efcor Inc
LB29MT Crouse-Hinds Lighting (USA)
LB32 Bridgeport Fittings Inc (USA)
17501 Atlas Technologies Inc (USA)
ELB-11 Atlas Technologies Inc (USA)
Related Parts
3010-00-102-4213INTERCHANGEABLE
CLUTCH,PLATE
1750-1
6515-00-400-7501INTERCHANGEABLE
BAG,RESERVOIR,INHALATION THERAPY
4410-00-418-2334INTERCHANGEABLE
GAGE AND VALVE ASSEMBLY
1750-001-00
5340-00-426-3054INTERCHANGEABLE
KEY BLANK
1573
5930-00-655-1527INTERCHANGEABLE
SWITCH,TOGGLE
6610-00-680-8325INTERCHANGEABLE
CASE ASSY,GYRO HORI
649-0049-901
4710-00-756-0864INTERCHANGEABLE
TUBE ASSEMBLY,METAL
17501
2940-00-891-1920INTERCHANGEABLE
FILTER,FLUID
1573
5910-00-901-8796INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5330-01-044-7400INTERCHANGEABLE
GASKET
17501
3020-01-057-9521INTERCHANGEABLE
PULLEY,SCANNER
1573
5355-01-136-5374INTERCHANGEABLE
KNOB
17501

Frequently Asked Questions

What is NSN 5975-00-141-0051?

NSN 5975-00-141-0051 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 5975-00-141-0051?

NSN 5975-00-141-0051 has 7 cross-referenced part numbers: TWOLB-2 (Killark Electric Mfg Co), LB29MT (Crouse-Hinds Co), 15-73 (Efcor Inc), LB29MT (Crouse-Hinds Lighting), LB32 (Bridgeport Fittings Inc) and 2 more.

What NSN replaces 5975-00-141-0051?

There are 12 known substitutes for 5975-00-141-0051: 3010-00-102-4213, 6515-00-400-7501, 4410-00-418-2334 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TWOLB-2?

Key specifications for TWOLB-2: Cover Opening Length: 3.938 INCHES NOMINAL IN; Cover Quantity: 1; Style Designator: OBLONG; Overall Depth: 2.406 INCHES NOMINAL IN. 18 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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