PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SC4Cap,protective,dust and Moisture

Tubing Seal Cap Div of Vsi Corp Sub of Fairchild Industries Inc · NSN 5340-00-034-7948 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-034-7948 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-034-7948. Primary manufacturer part number: SC4.
Features
  • Cap,protective,dust and Moisture — FSC 5340
  • Overall Diameter: 0.562 INCHES NOMINAL IN
  • Departure From Cited Document: AS MODIFIED BY SURFACE TREATMENT
  • Nondefinitive Spec/std Data: 2 TYPE AND 4 SIZE
  • Thread Size and Series/type Designator: 7/16-20 UNF
  • Thread Class: 3B
  • Design Type: THREADED
  • Round Cap Outside Surface Condition: SERRATED
Applications
  • Applications requiring Aluminum construction
General Description

The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-00-034-7948, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Tubing Seal Cap Div of Vsi Corp Sub of Fairchild Industries Inc. Government technical data includes 8 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-034-7948
Primary Part NumberSC4
Item NameCap,protective,dust and Moisture
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerTubing Seal Cap Div of Vsi Corp Sub of Fairchild Industries Inc
StatusCANCELLED
Overall Diameter0.562 INCHES NOMINAL IN
Departure From Cited DocumentAS MODIFIED BY SURFACE TREATMENT
Nondefinitive Spec/std Data2 TYPE AND 4 SIZE
Thread Size and Series/type Designator7/16-20 UNF
Thread Class3B
Design TypeTHREADED
Round Cap Outside Surface ConditionSERRATED
MaterialALUMINUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
No Item Name Available
6635-00-056-1007 INTERCHANGEABLE
Calibrator,sensitiv
3655-00-174-1726 INTERCHANGEABLE
Recharging Unit,carbon Dioxide,p
5935-00-201-8357SC4 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Viking Technologies, Ltd.
5360-00-310-66322098 INTERCHANGEABLE
Spring,helical,compression
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
4320-00-398-9320BS-1193 PIECE 91 INTERCHANGEABLE
Rod,tail
Circor Naval Solutions Llc Dba Warren Pumps
5340-00-480-6054145A INTERCHANGEABLE
Key Blank
Ilco Unican Corp Dba Wolf Sales
5950-00-645-3602 INTERCHANGEABLE
Transformer,power
5961-00-988-3991S4M INTERCHANGEABLE
Semiconductor Device,diode
Semtech Corporation
5950-01-220-641011442428 INTERCHANGEABLE
Coil,radio Frequency
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
U4578-1 Triumph Thermal Systems, Llc (USA)
SC4 PRIMARY Tubing Seal Cap Div of Vsi Corp Sub of Fairchild Industries Inc (USA)
8022088 Us Army Aviation and Missile Command (USA)
5104-2900 Kidde-Fenwal, Llc (USA)
Related Parts
5340-00-619-4146SUCCESSOR
NO ITEM NAME AVAILABLE
6635-00-056-1007INTERCHANGEABLE
CALIBRATOR,SENSITIV
3655-00-174-1726INTERCHANGEABLE
RECHARGING UNIT,CARBON DIOXIDE,P
5935-00-201-8357INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
SC4
5360-00-310-6632INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
2098
4320-00-398-9320INTERCHANGEABLE
ROD,TAIL
BS-1193 PIECE 91
5340-00-480-6054INTERCHANGEABLE
KEY BLANK
145A
5950-00-645-3602INTERCHANGEABLE
TRANSFORMER,POWER
5961-00-988-3991INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
S4M
5950-01-220-6410INTERCHANGEABLE
COIL,RADIO FREQUENCY
11442428
6015-01-433-2760INTERCHANGEABLE
CABLE,FIBER OPTIC
SC-4
3110-01-473-6073INTERCHANGEABLE
COLLAR,BEARING
SC-4

Frequently Asked Questions

What is NSN 5340-00-034-7948?

NSN 5340-00-034-7948 is a Cap,protective,dust and Moisture, manufactured by Tubing Seal Cap Div of Vsi Corp Sub of Fairchild Industries Inc, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-034-7948?

NSN 5340-00-034-7948 has 4 cross-referenced part numbers: U4578-1 (Triumph Thermal Systems, Llc), SC4 (Tubing Seal Cap Div of Vsi Corp Sub of Fairchild Industries Inc), 8022088 (Us Army Aviation and Missile Command), 5104-2900 (Kidde-Fenwal, Llc).

What NSN replaces 5340-00-034-7948?

There are 12 known substitutes for 5340-00-034-7948: 5340-00-619-4146, 6635-00-056-1007, 3655-00-174-1726 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SC4?

Key specifications for SC4: Overall Diameter: 0.562 INCHES NOMINAL IN; Departure From Cited Document: AS MODIFIED BY SURFACE TREATMENT; Nondefinitive Spec/std Data: 2 TYPE AND 4 SIZE; Thread Size and Series/type Designator: 7/16-20 UNF. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-034-7948 still in active supply?

NSN 5340-00-034-7948 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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