PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21861-2Mount,resilient,weapon System

Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp · NSN 5342-00-279-3799 · FSC 5342 · Mount,resilient,weapon System
Verified by PartsTable
NSN 5342-00-279-3799 — this item is cataloged by the U.S. Government under National Stock Number 5342-00-279-3799. Primary manufacturer part number: 21861-2.
Features
  • Mount,resilient,weapon System — FSC 5342
  • Material Document and Classification: SAE 1050 ASSN STD SINGLE MATERIAL RESPONSE BASE PLATE
  • Style Designator: ROUND SPRING COMPRESSION FOUR-HOLE FLANGE
  • Material: STEEL BASE PLATE
  • Flange Mounting Hole Diameter: 0.201 INCHES NOMINAL IN
  • Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE HOUSING
  • Flange Length: 2.380 INCHES NOMINAL IN
  • Material Document and Classification: QQ-A-250 FED SPEC SINGLE MATERIAL RESPONSE INNER MEMBER
Applications
  • Applications requiring Steel Base Plate construction
General Description

The Mount,resilient,weapon System, cataloged under National Stock Number 5342-00-279-3799, 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 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5342-00-279-3799
Primary Part Number21861-2
Item NameMount,resilient,weapon System
FSC / FSG5342 / 53 — Mount,resilient,weapon System
ManufacturerHutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp
StatusACTIVE
Material Document and ClassificationSAE 1050 ASSN STD SINGLE MATERIAL RESPONSE BASE PLATE
Style DesignatorROUND SPRING COMPRESSION FOUR-HOLE FLANGE
MaterialSTEEL BASE PLATE
Flange Mounting Hole Diameter0.201 INCHES NOMINAL IN
Surface Treatment Document and ClassificationQQ-P-416, TYPE 2, CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE HOUSING
Flange Length2.380 INCHES NOMINAL IN
Material Document and ClassificationQQ-A-250 FED SPEC SINGLE MATERIAL RESPONSE INNER MEMBER
MaterialSTEEL HOUSING
Distance Between Mounting Hole Centers1.938 INCHES NOMINAL IN
Flange Width2.380 INCHES NOMINAL IN
Surface TreatmentCADMIUM HOUSING
Thread Size3/8-24 ALL THREADED PORTIONS
Surface TreatmentCHROMATE INNER MEMBER
Height1.530 INCHES MINIMUM AND 1.590 INCHES MAXIMUM IN
Shortest Distance Between Mounting Hole Centers1.938 INCHES NOMINAL IN
Load Rating50.0 POUNDS MAXIMUM LBS
Surface Treatment Document and ClassificationMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE INNER MEMBER
Material Document and ClassificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE HOUSING
MaterialALUMINUM ALLOY INNER MEMBER
Flange Thickness0.130 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5961-00-813-0389 INTERCHANGEABLE
Semiconductor Device,diode
1680-00-928-46752186-12 INTERCHANGEABLE
Plug,armrest
B/e Aerospace Inc Dba Interturbine
2590-01-312-0296218612 INTERCHANGEABLE
Cap,filler Opening
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
2520-01-565-040410-26-47 INTERCHANGEABLE
Yoke,universal Joint,vehicular
Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products
Cross-Reference Index
Part NumberManufacturer
200-0764-050 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
200-0734-050 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
21861-2 PRIMARY Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp (USA)
Related Parts
5961-00-813-0389INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
1680-00-928-4675INTERCHANGEABLE
PLUG,ARMREST
2186-12
2590-01-312-0296INTERCHANGEABLE
CAP,FILLER OPENING
218612
2520-01-565-0404INTERCHANGEABLE
YOKE,UNIVERSAL JOINT,VEHICULAR
10-26-47

Frequently Asked Questions

What is NSN 5342-00-279-3799?

NSN 5342-00-279-3799 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 5342-00-279-3799?

NSN 5342-00-279-3799 has 3 cross-referenced part numbers: 200-0764-050 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 200-0734-050 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 21861-2 (Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp).

What NSN replaces 5342-00-279-3799?

There are 4 known substitutes for 5342-00-279-3799: 5961-00-813-0389, 1680-00-928-4675, 2590-01-312-0296 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21861-2?

Key specifications for 21861-2: Material Document and Classification: SAE 1050 ASSN STD SINGLE MATERIAL RESPONSE BASE PLATE; Style Designator: ROUND SPRING COMPRESSION FOUR-HOLE FLANGE; Material: STEEL BASE PLATE; Flange Mounting Hole Diameter: 0.201 INCHES NOMINAL IN. 20 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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