PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30305Washer,flat

New Haven Mfg Corp · NSN 5310-00-989-5793 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-989-5793 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-989-5793. Primary manufacturer part number: 30305.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Material Document and Classification: QQ-S-763, COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL COMP 303 OVERALL
  • Surface Finish: 63.0 MICROINCHES BOTTOM
  • Surface Finish: 63.0 MICROINCHES TOP
  • Surface Treatment: PASSIVATE OVERALL
  • Hole Diameter: 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-989-5793, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is New Haven Mfg Corp. Government technical data includes 11 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
NSN5310-00-989-5793
Primary Part Number30305
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNew Haven Mfg Corp
StatusACTIVE
Peripheral Shape StyleROUND
Material Document and ClassificationQQ-S-763, COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 303 OVERALL
Surface Finish63.0 MICROINCHES BOTTOM
Surface Finish63.0 MICROINCHES TOP
Surface TreatmentPASSIVATE OVERALL
Hole Diameter0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
Thickness0.051 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3110-00-156-80101231552 INTERCHANGEABLE
Bearing,ball,duplex
Westinghouse Electric Corp
5310-00-325-1911411R352H01 INTERCHANGEABLE
Washer,flat
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
4530-00-605-069430305 INTERCHANGEABLE
Nozzle,burner,vapor
Aeroil Products Co Inc
7490-00-955-837030305 INTERCHANGEABLE
Link,universal Join
Pitney Bowes Inc.
6510-01-214-8727 INTERCHANGEABLE
Wick,ear
5330-01-347-138830305 INTERCHANGEABLE
Parts Kit,seal Replacement,mecha
Bourns Inc
5330-01-499-85188480-7312 INTERCHANGEABLE
Parts Kit,seal Replacement,mecha
Ecolab Inc
3110-01-542-4550013 938 6 INTERCHANGEABLE
Bearing,roller,tapered
Sew-Eurodrive, Inc.
6545-01-600-8847UA 9009 INTERCHANGEABLE
Operator Kit 11 Stccc
Department of the Army U S Army Medical Material Agency Mcmr-Mmo-Sa
8415-01-678-08893030-5 INTERCHANGEABLE
Jacket,welder's
Packaging People, Inc.
Cross-Reference Index
Part NumberManufacturer
30305 New Haven Mfg Corp (USA)
1719576 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
3110-00-156-8010INTERCHANGEABLE
BEARING,BALL,DUPLEX
1231552
5310-00-325-1911INTERCHANGEABLE
WASHER,FLAT
411R352H01
4530-00-605-0694INTERCHANGEABLE
NOZZLE,BURNER,VAPOR
30305
7490-00-955-8370INTERCHANGEABLE
LINK,UNIVERSAL JOIN
30305
6510-01-214-8727INTERCHANGEABLE
WICK,EAR
5330-01-347-1388INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA
30305
5330-01-499-8518INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA
8480-7312
3110-01-542-4550INTERCHANGEABLE
BEARING,ROLLER,TAPERED
013 938 6
6545-01-600-8847INTERCHANGEABLE
OPERATOR KIT 11 STCCC
UA 9009
8415-01-678-0889INTERCHANGEABLE
JACKET,WELDER'S
3030-5

Frequently Asked Questions

What is NSN 5310-00-989-5793?

NSN 5310-00-989-5793 is a Washer,flat, manufactured by New Haven Mfg Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-989-5793?

NSN 5310-00-989-5793 has 2 cross-referenced part numbers: 30305 (New Haven Mfg Corp), 1719576 (Lockheed Martin Corporation Div Rms - Mitchel Field).

What NSN replaces 5310-00-989-5793?

There are 10 known substitutes for 5310-00-989-5793: 3110-00-156-8010, 5310-00-325-1911, 4530-00-605-0694 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30305?

Key specifications for 30305: Peripheral Shape Style: ROUND; Material Document and Classification: QQ-S-763, COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL COMP 303 OVERALL; Surface Finish: 63.0 MICROINCHES BOTTOM. 11 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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