PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

OTU-7-1Plug,vent

Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco) · NSN 5340-01-287-5951 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-287-5951 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-287-5951. Primary manufacturer part number: OTU-7-1.
Features
  • Plug,vent — FSC 5340
  • Outside Diameter: 1.125 INCHES NOMINAL IN
  • Length: 1.625 INCHES NOMINAL IN
  • FSC Application Data: INLET MANIFOLD ASSY
  • Thread Size and Series/type Designator: 25-18 NPT
  • Vent Hole Quantity: 4
  • Vent Hole Shape: ROUND
  • Material: COPPER ALLOY
Applications
  • Applications requiring Copper Alloy construction
General Description

The Plug,vent, cataloged under National Stock Number 5340-01-287-5951, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco). Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-287-5951
Primary Part NumberOTU-7-1
Item NamePlug,vent
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerOklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco)
StatusACTIVE
Outside Diameter1.125 INCHES NOMINAL IN
Length1.625 INCHES NOMINAL IN
FSC Application DataINLET MANIFOLD ASSY
Thread Size and Series/type Designator25-18 NPT
Vent Hole Quantity4
Vent Hole ShapeROUND
MaterialCOPPER ALLOY
Thread Length0.594 INCHES NOMINAL IN
End Connection TypeTHREADED
Inside Diameter0.250 INCHES NOMINAL IN
Vent Hole Diameter0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5340-00-176-0828 (60-004-1)
HAZMATNo
Unit of IssueEA
Verified Substitutes 7
5340-00-176-082860-004-1 SUCCESSOR
Button,plug
Bell Textron Inc
6530-01-663-230860-0041 SUCCESSOR
Carrier,litter,wheeled
North American Rescue, Llc
3130-00-130-5761SC-C-600041 INTERCHANGEABLE
Cap,pillow Block
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
3110-00-156-474212308 INTERCHANGEABLE
Bearing,ball,annular
Sicard a Division of Smi-Snowblast Inc Dba Sicard
1650-00-792-571360004-1 INTERCHANGEABLE
Parts Kit,valve
Meggitt North Hollywood Inc
5998-00-995-428360-0041 INTERCHANGEABLE
Circuit Card Assembly
L3harris Interstate Electronics Corporation
3010-01-329-1939228012 INTERCHANGEABLE
Gear Assembly,speed Decreaser
Allied Systems Company Dba Allied Systems Co
Cross-Reference Index
Part NumberManufacturer
OTU-7 Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco) (USA)
OTU-7-1 PRIMARY Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco) (USA)
8771817 San Antonio Air Logistics Center (USA)
600041 Cv International, Inc. (USA)
Related Parts
SUCCESSOR 5340-00-176-0828 Button,plug · 60-004-1
6530-01-663-2308SUCCESSOR
CARRIER,LITTER,WHEELED
60-0041
3130-00-130-5761INTERCHANGEABLE
CAP,PILLOW BLOCK
SC-C-600041
3110-00-156-4742INTERCHANGEABLE
BEARING,BALL,ANNULAR
12308
1650-00-792-5713INTERCHANGEABLE
PARTS KIT,VALVE
60004-1
5998-00-995-4283INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
60-0041
3010-01-329-1939INTERCHANGEABLE
GEAR ASSEMBLY,SPEED DECREASER
228012

Frequently Asked Questions

What is NSN 5340-01-287-5951?

NSN 5340-01-287-5951 is a Plug,vent, manufactured by Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco), classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-287-5951?

NSN 5340-01-287-5951 has 4 cross-referenced part numbers: OTU-7 (Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco)), OTU-7-1 (Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco)), 8771817 (San Antonio Air Logistics Center), 600041 (Cv International, Inc.).

What NSN replaces 5340-01-287-5951?

There are 7 known substitutes for 5340-01-287-5951: 5340-00-176-0828, 6530-01-663-2308, 3130-00-130-5761 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of OTU-7-1?

Key specifications for OTU-7-1: Outside Diameter: 1.125 INCHES NOMINAL IN; Length: 1.625 INCHES NOMINAL IN; End Item Identification: LIQ.OXYGEN MULT. SERV. UNIT; FSC Application Data: INLET MANIFOLD ASSY. 13 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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