PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

112340Washer,flat

Astronautics Corporation of America · NSN 5310-01-049-1749 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-049-1749 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-049-1749. Primary manufacturer part number: 112340.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Hole Diameter: 0.260 INCHES NOMINAL IN
  • Material Document and Classification: QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL COMP 302 OVERALL
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: PASSIVATE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-049-1749, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Astronautics Corporation of America. Government technical data includes 10 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-049-1749
Primary Part Number112340
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAstronautics Corporation of America
StatusACTIVE
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter0.260 INCHES NOMINAL IN
Material Document and ClassificationQQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 302 OVERALL
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentPASSIVATE OVERALL
Overall Diameter0.370 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Thickness0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-00-676-87032557903 INTERCHANGEABLE
Bearing,ball,annular
Raytheon Company Dba Raytheon Co
5340-01-526-6311112340 INTERCHANGEABLE
Mount,resilient,utility
Hamilton Jet, Inc.
2040-01-567-0387112340 INTERCHANGEABLE
Cover,boat
Shield Technologies Corp Div Shield Technologies Corporation
Cross-Reference Index
Part NumberManufacturer
112340 PRIMARY Astronautics Corporation of America (USA)
Related Parts
3110-00-676-8703INTERCHANGEABLE
BEARING,BALL,ANNULAR
2557903
5340-01-526-6311INTERCHANGEABLE
MOUNT,RESILIENT,UTILITY
112340
2040-01-567-0387INTERCHANGEABLE
COVER,BOAT
112340

Frequently Asked Questions

What is NSN 5310-01-049-1749?

NSN 5310-01-049-1749 is a Washer,flat, manufactured by Astronautics Corporation of America, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-049-1749?

NSN 5310-01-049-1749 has 1 cross-referenced part number: 112340 (Astronautics Corporation of America).

What NSN replaces 5310-01-049-1749?

There are 3 known substitutes for 5310-01-049-1749: 3110-00-676-8703, 5340-01-526-6311, 2040-01-567-0387. Verify interchangeability with system specifications before substitution.

What are the specifications of 112340?

Key specifications for 112340: Peripheral Shape Style: ROUND; Cross-Sectional Shape Style: RECTANGULAR; Hole Diameter: 0.260 INCHES NOMINAL IN; Material Document and Classification: QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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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