PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9383Washer,flat

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5310-00-148-4721 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-148-4721 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-148-4721. Primary manufacturer part number: 9383.
Features
  • Washer,flat — FSC 5310
  • Center Hole Shape Style: ROUND
  • Thickness: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
  • Hole Diameter: 0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
  • Material: STEEL COMP 8750 OVERALL
  • Material Document and Classification: AMS 6328 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 8750 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-148-4721, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-148-4721
Primary Part Number9383
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Center Hole Shape StyleROUND
Thickness0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Hole Diameter0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN
Hardness Rating40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
MaterialSTEEL COMP 8750 OVERALL
Material Document and ClassificationAMS 6328 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Overall Diameter1.428 INCHES MINIMUM AND 1.448 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5120-00-288-778351202887793 INTERCHANGEABLE
Tuning Wand,electronic Equipment
General Services Administration Federal Supply Service
4330-00-319-118814429 INTERCHANGEABLE
Filter Element,fluid
Arvinmeritor Inc
5310-00-656-6973 INTERCHANGEABLE
Nut,plain,hexagon
4730-01-041-66074073603 INTERCHANGEABLE
Cap,filler Opening,
Rtx Corporation Div Pratt & Whitney
5998-01-132-37699383 INTERCHANGEABLE
Circuit Card Assembly
L3 Technologies, Inc. Div Communication Systems-West
6635-01-251-35969383 INTERCHANGEABLE
Vibration Kit,propeller
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
3020-01-259-84139383 INTERCHANGEABLE
Gear,spur
Scientific Atlanta Inc
5935-01-310-95739383 INTERCHANGEABLE
Connector,receptacle,electrical
Hose-Mccann Telephone Co, Inc
5910-01-326-7677 INTERCHANGEABLE
Capacitor,variable,ceramic Diele
6665-01-567-8632436001101 INTERCHANGEABLE
Reader,irda
Thermo Eberline Llc Div Measurement Control and Sample Identification
Cross-Reference Index
Part NumberManufacturer
9383 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
9383 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
Related Parts
5120-00-288-7783INTERCHANGEABLE
TUNING WAND,ELECTRONIC EQUIPMENT
51202887793
4330-00-319-1188INTERCHANGEABLE
FILTER ELEMENT,FLUID
14429
5310-00-656-6973INTERCHANGEABLE
NUT,PLAIN,HEXAGON
4730-01-041-6607INTERCHANGEABLE
CAP,FILLER OPENING,
4073603
5998-01-132-3769INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
9383
6635-01-251-3596INTERCHANGEABLE
VIBRATION KIT,PROPELLER
9383
3020-01-259-8413INTERCHANGEABLE
GEAR,SPUR
9383
5935-01-310-9573INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
9383
5910-01-326-7677INTERCHANGEABLE
CAPACITOR,VARIABLE,CERAMIC DIELE
6665-01-567-8632INTERCHANGEABLE
READER,IRDA
436001101

Frequently Asked Questions

What is NSN 5310-00-148-4721?

NSN 5310-00-148-4721 is a Washer,flat, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-148-4721?

NSN 5310-00-148-4721 has 2 cross-referenced part numbers: 9383 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 9383 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).

What NSN replaces 5310-00-148-4721?

There are 10 known substitutes for 5310-00-148-4721: 5120-00-288-7783, 4330-00-319-1188, 5310-00-656-6973 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9383?

Key specifications for 9383: Center Hole Shape Style: ROUND; Thickness: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Hole Diameter: 0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM. 9 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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