PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

379Plug,vent

Morrison Brothers Co Dba Morrison Brothers Co · NSN 5340-01-490-6757 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-490-6757 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-490-6757. Primary manufacturer part number: 379.
Features
  • Plug,vent — FSC 5340
  • Length: 4.875 INCHES NOMINAL IN
  • End Connection Type: THREADED
  • Thread Size and Series/type Designator: 11-5 NPT
  • Vent Hole Shape: ROUND
  • Vent Hole Diameter: 1.938 INCHES NOMINAL IN
  • Vent Hole Quantity: 1
  • Thread Length: 2.000 INCHES NOMINAL IN
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Plug,vent, cataloged under National Stock Number 5340-01-490-6757, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Morrison Brothers Co Dba Morrison Brothers Co. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-490-6757
Primary Part Number379
Item NamePlug,vent
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMorrison Brothers Co Dba Morrison Brothers Co
StatusACTIVE
Length4.875 INCHES NOMINAL IN
End Connection TypeTHREADED
Thread Size and Series/type Designator11-5 NPT
Vent Hole ShapeROUND
Vent Hole Diameter1.938 INCHES NOMINAL IN
Vent Hole Quantity1
Thread Length2.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5340-00-186-3917SCA8637PT9 SUCCESSOR
Clamp,loop
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5310-00-010-3319 INTERCHANGEABLE
Washer,lock
6685-00-050-7721308428C91 INTERCHANGEABLE
Thermostat,flow Control
Navistar Intl Corp Truck Br Ohio Plant
5950-00-136-6367379 INTERCHANGEABLE
Transformer,current
Standard Industries
3444-00-223-8353 INTERCHANGEABLE
Press,arbor,hand Operated
6240-00-223-9100 INTERCHANGEABLE
Lamp,glow
5940-00-258-21207612531 INTERCHANGEABLE
Terminal,lug
Us Army Aviation and Missile Command
3830-00-374-1131 INTERCHANGEABLE
Cap,brake Cam
5315-00-538-1196XA-379 INTERCHANGEABLE
Pin,straight,headless
Saf-Holland, Inc.
6625-00-691-6607379 INTERCHANGEABLE
Case,test Set
Triplett (bluffton) Corporation Dba Lfe Instruments
Cross-Reference Index
Part NumberManufacturer
379 PRIMARY Morrison Brothers Co Dba Morrison Brothers Co (USA)
M-5519-0 Morrison Brothers Co Dba Morrison Brothers Co (USA)
Related Parts
5340-00-186-3917SUCCESSOR
CLAMP,LOOP
SCA8637PT9
5310-00-010-3319INTERCHANGEABLE
WASHER,LOCK
6685-00-050-7721INTERCHANGEABLE
THERMOSTAT,FLOW CONTROL
308428C91
5950-00-136-6367INTERCHANGEABLE
TRANSFORMER,CURRENT
379
3444-00-223-8353INTERCHANGEABLE
PRESS,ARBOR,HAND OPERATED
6240-00-223-9100INTERCHANGEABLE
LAMP,GLOW
5940-00-258-2120INTERCHANGEABLE
TERMINAL,LUG
7612531
3830-00-374-1131INTERCHANGEABLE
CAP,BRAKE CAM
5315-00-538-1196INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
XA-379
6625-00-691-6607INTERCHANGEABLE
CASE,TEST SET
379
5930-00-737-8379INTERCHANGEABLE
SWITCH,PUSH-PULL
7378379
6625-00-923-0307INTERCHANGEABLE
TEST SET,BATTERY
379

Frequently Asked Questions

What is NSN 5340-01-490-6757?

NSN 5340-01-490-6757 is a Plug,vent, manufactured by Morrison Brothers Co Dba Morrison Brothers Co, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-490-6757?

NSN 5340-01-490-6757 has 2 cross-referenced part numbers: 379 (Morrison Brothers Co Dba Morrison Brothers Co), M-5519-0 (Morrison Brothers Co Dba Morrison Brothers Co).

What NSN replaces 5340-01-490-6757?

There are 12 known substitutes for 5340-01-490-6757: 5340-00-186-3917, 5310-00-010-3319, 6685-00-050-7721 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 379?

Key specifications for 379: Length: 4.875 INCHES NOMINAL IN; End Connection Type: THREADED; Special Features: TWO INCH FILL CAP AND VENT, OVERALL WIDTH IS 5.625 INCHES IN; Thread Size and Series/type Designator: 11-5 NPT. 8 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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