PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50-0021Plate,mounting

Clamshell Structures, Inc · NSN 5340-01-326-5135 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-326-5135 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-326-5135. Primary manufacturer part number: 50-0021.
Features
  • Plate,mounting — FSC 5340
  • Features Provided: RAISED SURFACE
  • Length: 10.000 INCHES NOMINAL IN
  • Shape: RECTANGULAR
  • Width: 13.000 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Clamshell Structures, Inc
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Plate,mounting, cataloged under National Stock Number 5340-01-326-5135, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Clamshell Structures, Inc. Government technical data includes 4 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-326-5135
Primary Part Number50-0021
Item NamePlate,mounting
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerClamshell Structures, Inc
StatusACTIVE
Features ProvidedRAISED SURFACE
Length10.000 INCHES NOMINAL IN
ShapeRECTANGULAR
Width13.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 5
5330-01-046-7449470120 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
5998-01-061-517050-0021 INTERCHANGEABLE
Circuit Card Assembly
Northrop Grumman Defense Mission Systems, Inc.
4730-01-196-521850002-1 INTERCHANGEABLE
Adapter,straight,pipe to Boss
Aps Systems, Inc Dba Eidal International Corp
5330-01-285-490650-0021 INTERCHANGEABLE
Seal,nonmetallic Channel
Lancer Corp
3020-01-392-246150002-1 INTERCHANGEABLE
Gear,internal
Morpac Industries, Inc Div Actuator
Cross-Reference Index
Part NumberManufacturer
50-0021 PRIMARY Clamshell Structures, Inc (USA)
Related Parts
5330-01-046-7449INTERCHANGEABLE
SEAL,PLAIN ENCASED
470120
5998-01-061-5170INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
50-0021
4730-01-196-5218INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO BOSS
50002-1
5330-01-285-4906INTERCHANGEABLE
SEAL,NONMETALLIC CHANNEL
50-0021
3020-01-392-2461INTERCHANGEABLE
GEAR,INTERNAL
50002-1

Frequently Asked Questions

What is NSN 5340-01-326-5135?

NSN 5340-01-326-5135 is a Plate,mounting, manufactured by Clamshell Structures, Inc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-326-5135?

NSN 5340-01-326-5135 has 1 cross-referenced part number: 50-0021 (Clamshell Structures, Inc).

What NSN replaces 5340-01-326-5135?

There are 5 known substitutes for 5340-01-326-5135: 5330-01-046-7449, 5998-01-061-5170, 4730-01-196-5218 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50-0021?

Key specifications for 50-0021: Features Provided: RAISED SURFACE; Length: 10.000 INCHES NOMINAL IN; Shape: RECTANGULAR; Width: 13.000 INCHES NOMINAL IN. 4 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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