PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42-17Washer,flat

Medalist Industries Inc Leitzke Div · NSN 5310-01-302-9938 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-302-9938 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-302-9938. Primary manufacturer part number: 42-17.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Thickness: 0.126 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: STEEL OVERALL
  • Hole Diameter: 2.750 INCHES NOMINAL IN
  • Overall Diameter: 4.000 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-302-9938, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Medalist Industries Inc Leitzke Div. Government technical data includes 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-302-9938
Primary Part Number42-17
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMedalist Industries Inc Leitzke Div
StatusACTIVE
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Thickness0.126 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
MaterialSTEEL OVERALL
Hole Diameter2.750 INCHES NOMINAL IN
Overall Diameter4.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6850-00-014-3914 INTERCHANGEABLE
Cleaning Compound,solvent
3110-00-155-6333217G INTERCHANGEABLE
Bearing,ball,annular
Mcgill Manufacturing Co, Inc
2805-00-217-35584-217 INTERCHANGEABLE
Cup,valve Stem Rotator
Dresser Industries Inc Leroi Div
2040-00-398-9578 INTERCHANGEABLE
Fitting,e,haust
5950-00-701-0026722841-3 INTERCHANGEABLE
Transformer,audio Frequency
Raytheon Company Div Rmd Strategic
2805-00-987-73953732893 INTERCHANGEABLE
Ball,rod Adjusting
General Motors Llc Dba General Motors Llc
5330-01-061-1909625-02693 INTERCHANGEABLE
Gasket
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
5950-01-130-8905 INTERCHANGEABLE
Coil,radio Frequency
2590-01-162-4377200665 INTERCHANGEABLE
Parts Kit,horn Button Switch
Wiggins Lift Co Inc
4920-01-163-52664217 INTERCHANGEABLE
Adapter,tail Rotor
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
Cross-Reference Index
Part NumberManufacturer
42-17 Medalist Industries Inc Leitzke Div (USA)
Related Parts
6850-00-014-3914INTERCHANGEABLE
CLEANING COMPOUND,SOLVENT
3110-00-155-6333INTERCHANGEABLE
BEARING,BALL,ANNULAR
217G
2805-00-217-3558INTERCHANGEABLE
CUP,VALVE STEM ROTATOR
4-217
2040-00-398-9578INTERCHANGEABLE
FITTING,E,HAUST
5950-00-701-0026INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
722841-3
2805-00-987-7395INTERCHANGEABLE
BALL,ROD ADJUSTING
3732893
5330-01-061-1909INTERCHANGEABLE
GASKET
625-02693
5950-01-130-8905INTERCHANGEABLE
COIL,RADIO FREQUENCY
2590-01-162-4377INTERCHANGEABLE
PARTS KIT,HORN BUTTON SWITCH
200665
4920-01-163-5266INTERCHANGEABLE
ADAPTER,TAIL ROTOR
4217
5305-01-493-6804INTERCHANGEABLE
SCREW,MACHINE
8135-01-517-4727INTERCHANGEABLE
INSERT,SHIPPING BOX
4-217

Frequently Asked Questions

What is NSN 5310-01-302-9938?

NSN 5310-01-302-9938 is a Washer,flat, manufactured by Medalist Industries Inc Leitzke Div, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-302-9938?

NSN 5310-01-302-9938 has 1 cross-referenced part number: 42-17 (Medalist Industries Inc Leitzke Div).

What NSN replaces 5310-01-302-9938?

There are 12 known substitutes for 5310-01-302-9938: 6850-00-014-3914, 3110-00-155-6333, 2805-00-217-3558 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42-17?

Key specifications for 42-17: Peripheral Shape Style: ROUND; Center Hole Shape Style: ROUND; Thickness: 0.126 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR. 7 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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