PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

663523Bracket,loop Clamp

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5342-00-549-7779 · FSC 5342 · Mount,resilient,weapon System
Verified by PartsTable
NSN 5342-00-549-7779 — this item is cataloged by the U.S. Government under National Stock Number 5342-00-549-7779. Primary manufacturer part number: 663523.
Features
  • Bracket,loop Clamp — FSC 5342
  • General Characteristics Item Description: STEEL AMS 5504,ROCKWELL HARDNESS C30 TO C38,0.500 IN. W,0.216 IN. MIN 0.226 IN. MAX DIA MTG HOLES IN
  • 1 verified cross-reference
  • Primary manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Bracket,loop Clamp, cataloged under National Stock Number 5342-00-549-7779, is classified within Federal Supply Class 5342 (Mount,resilient,weapon System) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 1 verified specification, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5342-00-549-7779
Primary Part Number663523
Item NameBracket,loop Clamp
FSC / FSG5342 / 53 — Mount,resilient,weapon System
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
General Characteristics Item DescriptionSTEEL AMS 5504,ROCKWELL HARDNESS C30 TO C38,0.500 IN. W,0.216 IN. MIN 0.226 IN. MAX DIA MTG HOLES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-522-58991229U1061 INTERCHANGEABLE
Washer,spring Tension
Meritor Heavy Vehicle Systems, Llc
Cross-Reference Index
Part NumberManufacturer
663523 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
5310-00-522-5899INTERCHANGEABLE
WASHER,SPRING TENSION
1229U1061

Frequently Asked Questions

What is NSN 5342-00-549-7779?

NSN 5342-00-549-7779 is a Bracket,loop Clamp, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5342 (Mount,resilient,weapon System). Status: active.

What are the part numbers for NSN 5342-00-549-7779?

NSN 5342-00-549-7779 has 1 cross-referenced part number: 663523 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 5342-00-549-7779?

There is 1 known substitute for 5342-00-549-7779: 5310-00-522-5899. Verify interchangeability with system specifications before substitution.

What are the specifications of 663523?

Key specifications for 663523: General Characteristics Item Description: STEEL AMS 5504,ROCKWELL HARDNESS C30 TO C38,0.500 IN. W,0.216 IN. MIN 0.226 IN. MAX DIA MTG HOLES IN. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com