PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2703Cap,protective,dust and Moisture

Heyco Molded Products Inc · NSN 5340-01-721-7905 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-721-7905 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-721-7905. Primary manufacturer part number: 2703.
Features
  • Cap,protective,dust and Moisture — FSC 5340
  • Opening Inside Diameter for Which Designed: 0.875 INCHES NOMINAL IN
  • Design Type: MOLDED
  • Material: PLASTIC
  • 1 verified cross-reference
  • Primary manufacturer: Heyco Molded Products Inc
Applications
  • Applications requiring Plastic construction
General Description

The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-721-7905, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Heyco Molded Products Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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.

Technical Specifications
ParameterValue
NSN5340-01-721-7905
Primary Part Number2703
Item NameCap,protective,dust and Moisture
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerHeyco Molded Products Inc
StatusACTIVE
Opening Inside Diameter for Which Designed0.875 INCHES NOMINAL IN
Design TypeMOLDED
MaterialPLASTIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-193-8501345848PC1 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4330-00-277-13692703 INTERCHANGEABLE
Filter Element,fluid
Champion Aerospace Llc
5940-00-357-71162803-103 INTERCHANGEABLE
Post,binding,electrical
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5962-01-067-1345 INTERCHANGEABLE
Microcircuit,digital
4730-01-123-0399 INTERCHANGEABLE
Elbow,pipe
6625-01-269-2463260-6XLPM INTERCHANGEABLE
Multimeter
Simpson Electric Company, Inc.
5895-01-494-44662703 INTERCHANGEABLE
Data Terminal Unit
Alcatel-Lucent Holdings Inc.
4940-01-517-72812703 INTERCHANGEABLE
Diagnostic Data Col
Dli Engineering Corporation Div Government Services
5895-01-524-30012703 INTERCHANGEABLE
Modem,communications
Alcatel Internetworking Inc.
5895-01-541-0036 INTERCHANGEABLE
Terminal,satellite Communication
Cross-Reference Index
Part NumberManufacturer
2703 PRIMARY Heyco Molded Products Inc (USA)
Related Parts
5950-00-193-8501INTERCHANGEABLE
TRANSFORMER,POWER
345848PC1
4330-00-277-1369INTERCHANGEABLE
FILTER ELEMENT,FLUID
2703
5940-00-357-7116INTERCHANGEABLE
POST,BINDING,ELECTRICAL
2803-103
5962-01-067-1345INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
4730-01-123-0399INTERCHANGEABLE
ELBOW,PIPE
6625-01-269-2463INTERCHANGEABLE
MULTIMETER
260-6XLPM
5895-01-494-4466INTERCHANGEABLE
DATA TERMINAL UNIT
2703
4940-01-517-7281INTERCHANGEABLE
DIAGNOSTIC DATA COL
2703
5895-01-524-3001INTERCHANGEABLE
MODEM,COMMUNICATIONS
2703
5895-01-541-0036INTERCHANGEABLE
TERMINAL,SATELLITE COMMUNICATION
5340-01-566-2508INTERCHANGEABLE
PLUG,PROTECTIVE,DUST AND MOISTUR
2703
5961-01-618-9241INTERCHANGEABLE
RECTIFIER,SEMICONDUCTOR DEVICE
2703

Frequently Asked Questions

What is NSN 5340-01-721-7905?

NSN 5340-01-721-7905 is a Cap,protective,dust and Moisture, manufactured by Heyco Molded Products Inc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-721-7905?

NSN 5340-01-721-7905 has 1 cross-referenced part number: 2703 (Heyco Molded Products Inc).

What NSN replaces 5340-01-721-7905?

There are 12 known substitutes for 5340-01-721-7905: 5950-00-193-8501, 4330-00-277-1369, 5940-00-357-7116 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2703?

Key specifications for 2703: Part Name Assigned by Controlling Agency: DOME PLUGS; Opening Inside Diameter for Which Designed: 0.875 INCHES NOMINAL IN; Overall Height: 0.45 INCHES NOMINAL IN; Design Type: MOLDED. 5 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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