PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

49739Washer,flat

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5310-00-286-0387 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-286-0387 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-286-0387. Primary manufacturer part number: 49739.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Thickness: 0.020 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 0.688 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC OVERALL
  • Overall Diameter: 1.125 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Rubber Synthetic Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-286-0387, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 8 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
NSN5310-00-286-0387
Primary Part Number49739
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Peripheral Shape StyleROUND
Thickness0.020 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Hole Diameter0.688 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC OVERALL
Overall Diameter1.125 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Hardness Rating70.0 DUROMETER NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5133-00-266-9465 INTERCHANGEABLE
Drill,twist
5935-00-483-327331-102/UG-657/U INTERCHANGEABLE
Connector,plug,electrical
Amphenol Corporation Div Amphenol Rf
5935-01-680-915549739 INTERCHANGEABLE
Connector,plug,electrical
Times Microwave Systems, Inc Dba Times Microwave Systems Inc Div Times Microwave Systems
Cross-Reference Index
Part NumberManufacturer
49739 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
5133-00-266-9465INTERCHANGEABLE
DRILL,TWIST
5935-00-483-3273INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
31-102/UG-657/U
5935-01-680-9155INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
49739

Frequently Asked Questions

What is NSN 5310-00-286-0387?

NSN 5310-00-286-0387 is a Washer,flat, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-286-0387?

NSN 5310-00-286-0387 has 1 cross-referenced part number: 49739 (L3harris Technologies, Inc Div Space & Airborne Systems).

What NSN replaces 5310-00-286-0387?

There are 3 known substitutes for 5310-00-286-0387: 5133-00-266-9465, 5935-00-483-3273, 5935-01-680-9155. Verify interchangeability with system specifications before substitution.

What are the specifications of 49739?

Key specifications for 49739: Peripheral Shape Style: ROUND; Thickness: 0.020 INCHES NOMINAL IN; Center Hole Shape Style: ROUND; Hole Diameter: 0.688 INCHES NOMINAL IN. 8 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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