PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C311Mount,resilient,weapon System

Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp · NSN 5342-00-990-2459 · FSC 5342 · Mount,resilient,weapon System
Verified by PartsTable
NSN 5342-00-990-2459 — this item is cataloged by the U.S. Government under National Stock Number 5342-00-990-2459. Primary manufacturer part number: C311.
Features
  • Mount,resilient,weapon System — FSC 5342
  • Stud Length: 0.468 INCHES NOMINAL ALL THREADED STUD IN
  • Material: STEEL OVERALL
  • Distance From Flange to End: 1.000 INCHES NOMINAL IN
  • Major Outside Diameter: 1.375 INCHES NOMINAL IN
  • Style Designator: ROUND W/FLANGE THREADED STUD
  • Thread Size: 0.312-18UNC-2A ALL THREADED PORTIONS A
  • 1 verified cross-reference
Applications
  • Applications requiring Steel Overall construction
General Description

The Mount,resilient,weapon System, cataloged under National Stock Number 5342-00-990-2459, is classified within Federal Supply Class 5342 (Mount,resilient,weapon System) of the Hardware and Abrasives group. The primary manufacturer of record is Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp. Government technical data includes 6 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5342-00-990-2459
Primary Part NumberC311
Item NameMount,resilient,weapon System
FSC / FSG5342 / 53 — Mount,resilient,weapon System
ManufacturerHutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp
StatusACTIVE
Stud Length0.468 INCHES NOMINAL ALL THREADED STUD IN
MaterialSTEEL OVERALL
Distance From Flange to End1.000 INCHES NOMINAL IN
Major Outside Diameter1.375 INCHES NOMINAL IN
Style DesignatorROUND W/FLANGE THREADED STUD
Thread Size0.312-18UNC-2A ALL THREADED PORTIONS A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5315-00-058-9731MS16562-213 INTERCHANGEABLE
Pin,spring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
3110-00-108-779414-333-10 INTERCHANGEABLE
Bearing,roller,journal
Crosby Group Inc the Mckissick Plant Div
5910-00-129-9273SCB69228 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5133-00-357-0131C311 INTERCHANGEABLE
Cutter,counterbore
Wright Machine & Tool Co., Inc.
5315-01-057-4554C3-11 INTERCHANGEABLE
Pin,spring
Roller Bearing Co of America, Inc Div Pic Design
5360-01-408-8502207 INTERCHANGEABLE
Spring,helical,extension
Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp.
Cross-Reference Index
Part NumberManufacturer
C311 PRIMARY Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp (USA)
Related Parts
5315-00-058-9731INTERCHANGEABLE
PIN,SPRING
MS16562-213
3110-00-108-7794INTERCHANGEABLE
BEARING,ROLLER,JOURNAL
14-333-10
5910-00-129-9273INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
SCB69228
5133-00-357-0131INTERCHANGEABLE
CUTTER,COUNTERBORE
C311
5315-01-057-4554INTERCHANGEABLE
PIN,SPRING
C3-11
5360-01-408-8502INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
207

Frequently Asked Questions

What is NSN 5342-00-990-2459?

NSN 5342-00-990-2459 is a Mount,resilient,weapon System, manufactured by Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp, classified under FSC 5342 (Mount,resilient,weapon System). Status: active.

What are the part numbers for NSN 5342-00-990-2459?

NSN 5342-00-990-2459 has 1 cross-referenced part number: C311 (Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp).

What NSN replaces 5342-00-990-2459?

There are 6 known substitutes for 5342-00-990-2459: 5315-00-058-9731, 3110-00-108-7794, 5910-00-129-9273 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C311?

Key specifications for C311: Stud Length: 0.468 INCHES NOMINAL ALL THREADED STUD IN; Material: STEEL OVERALL; Distance From Flange to End: 1.000 INCHES NOMINAL IN; Major Outside Diameter: 1.375 INCHES NOMINAL IN. 6 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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