PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

63377Washer,flat

L & M Radiator, Inc. · NSN 5310-01-511-4868 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-511-4868 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-511-4868. Primary manufacturer part number: 63377.
Features
  • Washer,flat — FSC 5310
  • Center Hole Shape Style: ROUND
  • Material: COPPER OVERALL
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 0.875 INCHES NOMINAL IN
  • Thickness: 0.055 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Hole Diameter: 0.510 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-511-4868, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is L & M Radiator, Inc.. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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
NSN5310-01-511-4868
Primary Part Number63377
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerL & M Radiator, Inc.
StatusACTIVE
Center Hole Shape StyleROUND
MaterialCOPPER OVERALL
Peripheral Shape StyleROUND
Overall Diameter0.875 INCHES NOMINAL IN
Thickness0.055 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter0.510 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4730-00-287-1766SAE J512 4-2 060202BA INTERCHANGEABLE
Elbow,pipe to Tube
Sae International Dba Sae International
4820-00-317-4528 INTERCHANGEABLE
Disk,valve
6145-01-448-5769 INTERCHANGEABLE
Cable,power,electrical
Cross-Reference Index
Part NumberManufacturer
103888 ITEM 5 L & M Radiator, Inc. (USA)
63377 PRIMARY L & M Radiator, Inc. (USA)
Related Parts
4730-00-287-1766INTERCHANGEABLE
ELBOW,PIPE TO TUBE
SAE J512 4-2 060202BA
4820-00-317-4528INTERCHANGEABLE
DISK,VALVE
6145-01-448-5769INTERCHANGEABLE
CABLE,POWER,ELECTRICAL

Frequently Asked Questions

What is NSN 5310-01-511-4868?

NSN 5310-01-511-4868 is a Washer,flat, manufactured by L & M Radiator, Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-511-4868?

NSN 5310-01-511-4868 has 2 cross-referenced part numbers: 103888 ITEM 5 (L & M Radiator, Inc.), 63377 (L & M Radiator, Inc.).

What NSN replaces 5310-01-511-4868?

There are 3 known substitutes for 5310-01-511-4868: 4730-00-287-1766, 4820-00-317-4528, 6145-01-448-5769. Verify interchangeability with system specifications before substitution.

What are the specifications of 63377?

Key specifications for 63377: Center Hole Shape Style: ROUND; Material: COPPER OVERALL; Peripheral Shape Style: ROUND; Overall Diameter: 0.875 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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