PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

34018ACap,electrical

Ontic Engineering & Manufacturing, Inc Dba Ontic Us · NSN 5999-00-259-2091 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-259-2091 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-259-2091. Primary manufacturer part number: 34018A.
Features
  • Cap,electrical — FSC 5999
  • Material: ALUMINUM BODY
  • Thread Size: 3/4-32
  • Insert: NOT INCLUDED
  • Diameter: 0.938 INCHES NOMINAL IN
  • Length: 0.359 INCHES NOMINAL IN
  • Fastening Facility: W/FLUTED EDGE
  • Mounting Method: THREAD
Applications
  • Applications requiring Aluminum Body construction
General Description

The Cap,electrical, cataloged under National Stock Number 5999-00-259-2091, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-259-2091
Primary Part Number34018A
Item NameCap,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerOntic Engineering & Manufacturing, Inc Dba Ontic Us
StatusCANCELLED
MaterialALUMINUM BODY
Thread Size3/4-32
InsertNOT INCLUDED
Diameter0.938 INCHES NOMINAL IN
Length0.359 INCHES NOMINAL IN
Fastening FacilityW/FLUTED EDGE
Mounting MethodTHREAD
ChainNOT INCLUDED
Surface TreatmentANODIZE
MaterialALUMINUM BODY
Thread Size3/4-32
InsertNOT INCLUDED
Diameter0.938 INCHES NOMINAL IN
Length0.359 INCHES NOMINAL IN
Fastening FacilityW/FLUTED EDGE
Mounting MethodTHREAD
ChainNOT INCLUDED
Surface TreatmentANODIZE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJN
Weight0.0125 lbs
Cube0.0021 cu ft
Verified Substitutes 9
5130-00-221-8007 INTERCHANGEABLE
Socket,socket Wrench
2540-00-248-4603104-18 INTERCHANGEABLE
Blade,windshield Wiper
Trico Products Corporation
5360-00-891-131534018 INTERCHANGEABLE
Spring,helical,extension
Allianz Sweeper Company
5930-00-908-271734018A INTERCHANGEABLE
Switch,rotary
Staco Systems, Inc. Dba Staco Systems Div Dba Staco Systems
5961-00-990-837034018 INTERCHANGEABLE
Transistor
Renesas Electronics America Inc
5999-00-992-554107-0101-0004 INTERCHANGEABLE
Shielding Gasket,electronic
Metal Textiles Corporation Dba Metal Textiles Div Electronic Shielding Group
4720-01-052-010234018 INTERCHANGEABLE
Hose Assembly,nonmetallic
Tyco Fire Products Lp
6240-01-475-667448918 INTERCHANGEABLE
Lamp,fluorescent
Technical Consumer Products, Inc.
4820-01-535-4097204681 INTERCHANGEABLE
Cartridge,shut-Off Valve
Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division
Cross-Reference Index
Part NumberManufacturer
34018 Weldon Tool Co the (USA)
34018A PRIMARY Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA)
34018A Donallco Inc (USA)
204-681 Aerocontrolex Group, Inc. (USA)
Related Parts
5130-00-221-8007INTERCHANGEABLE
SOCKET,SOCKET WRENCH
2540-00-248-4603INTERCHANGEABLE
BLADE,WINDSHIELD WIPER
104-18
5360-00-891-1315INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
34018
5930-00-908-2717INTERCHANGEABLE
SWITCH,ROTARY
34018A
5961-00-990-8370INTERCHANGEABLE
TRANSISTOR
34018
5999-00-992-5541INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
07-0101-0004
4720-01-052-0102INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
34018
6240-01-475-6674INTERCHANGEABLE
LAMP,FLUORESCENT
48918
4820-01-535-4097INTERCHANGEABLE
CARTRIDGE,SHUT-OFF VALVE
204681

Frequently Asked Questions

What is NSN 5999-00-259-2091?

NSN 5999-00-259-2091 is a Cap,electrical, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-259-2091?

NSN 5999-00-259-2091 has 4 cross-referenced part numbers: 34018 (Weldon Tool Co the), 34018A (Ontic Engineering & Manufacturing, Inc Dba Ontic Us), 34018A (Donallco Inc), 204-681 (Aerocontrolex Group, Inc.).

What NSN replaces 5999-00-259-2091?

There are 9 known substitutes for 5999-00-259-2091: 5130-00-221-8007, 2540-00-248-4603, 5360-00-891-1315 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 34018A?

Key specifications for 34018A: Material: ALUMINUM BODY; Thread Size: 3/4-32; Insert: NOT INCLUDED; Diameter: 0.938 INCHES NOMINAL IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-259-2091 still in active supply?

NSN 5999-00-259-2091 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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