PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

103-20Washer,flat

Honeywell Intl Inc Defense Avionics Systems · NSN 5310-00-487-7510 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-487-7510 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-487-7510. Primary manufacturer part number: 103-20.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.013 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
  • Overall Diameter: 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
  • Hole Diameter: 0.043 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Material: COPPER ALLOY C OVERALL
  • Material Document and Classification: QQ-B-611 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Peripheral Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy C Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-487-7510, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Honeywell Intl Inc Defense Avionics Systems. Government technical data includes 8 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-487-7510
Primary Part Number103-20
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHoneywell Intl Inc Defense Avionics Systems
StatusCANCELLED
Thickness0.013 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
Overall Diameter0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
Hole Diameter0.043 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
MaterialCOPPER ALLOY C OVERALL
Material Document and ClassificationQQ-B-611 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-088-1251 INTERCHANGEABLE
Nut,self-Locking,hexagon
4820-00-127-2717 INTERCHANGEABLE
Disk,valve
5325-00-276-5676426668 INTERCHANGEABLE
Stud,snap Fastener
General Motors Llc Dba General Motors Llc
3040-00-396-3396SM-C-157295 INTERCHANGEABLE
Lever,manual Control
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5330-00-459-974210320LUPH1L5 INTERCHANGEABLE
Seal,plain
Johns Manville Intl
5305-00-533-53526L6832-12-81SF INTERCHANGEABLE
Screw,machine
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5965-00-864-804560D4302-1 INTERCHANGEABLE
Shell,earphone
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
5977-00-935-69483944355B06 INTERCHANGEABLE
Holder Assembly,electrical Conta
Prestolite Electric Inc
8040-00-942-0994 INTERCHANGEABLE
Thinner,adhesive
5133-00-988-5707 INTERCHANGEABLE
Drill,twist
Cross-Reference Index
Part NumberManufacturer
103-20 Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA)
103-20 PRIMARY Honeywell Intl Inc Defense Avionics Systems (USA)
Related Parts
5310-00-088-1251INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
4820-00-127-2717INTERCHANGEABLE
DISK,VALVE
5325-00-276-5676INTERCHANGEABLE
STUD,SNAP FASTENER
426668
3040-00-396-3396INTERCHANGEABLE
LEVER,MANUAL CONTROL
SM-C-157295
5330-00-459-9742INTERCHANGEABLE
SEAL,PLAIN
10320LUPH1L5
5305-00-533-5352INTERCHANGEABLE
SCREW,MACHINE
6L6832-12-81SF
5965-00-864-8045INTERCHANGEABLE
SHELL,EARPHONE
60D4302-1
5977-00-935-6948INTERCHANGEABLE
HOLDER ASSEMBLY,ELECTRICAL CONTA
3944355B06
8040-00-942-0994INTERCHANGEABLE
THINNER,ADHESIVE
5133-00-988-5707INTERCHANGEABLE
DRILL,TWIST
1680-01-072-0309INTERCHANGEABLE
PISTON,RESET,GOVERNOR
103202
3030-01-124-2182INTERCHANGEABLE
BELT,V
10320

Frequently Asked Questions

What is NSN 5310-00-487-7510?

NSN 5310-00-487-7510 is a Washer,flat, manufactured by Honeywell Intl Inc Defense Avionics Systems, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-487-7510?

NSN 5310-00-487-7510 has 2 cross-referenced part numbers: 103-20 (Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems), 103-20 (Honeywell Intl Inc Defense Avionics Systems).

What NSN replaces 5310-00-487-7510?

There are 12 known substitutes for 5310-00-487-7510: 5310-00-088-1251, 4820-00-127-2717, 5325-00-276-5676 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 103-20?

Key specifications for 103-20: Thickness: 0.013 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN; Overall Diameter: 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN; Hole Diameter: 0.043 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN; Center Hole Shape Style: ROUND. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-487-7510 still in active supply?

NSN 5310-00-487-7510 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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