PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SC-B-69389-2Washer,flat

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 5310-00-523-2143 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-523-2143 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-523-2143. Primary manufacturer part number: SC-B-69389-2.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: ASTM B103 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: COPPER ALLOY OVERALL
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.042 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN
  • Overall Diameter: 0.334 INCHES MINIMUM AND 0.354 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-523-2143, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-523-2143
Primary Part NumberSC-B-69389-2
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusACTIVE
Material Document and ClassificationASTM B103 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialCOPPER ALLOY OVERALL
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.042 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN
Overall Diameter0.334 INCHES MINIMUM AND 0.354 INCHES MAXIMUM IN
Hole Diameter0.1405 INCHES MINIMUM AND 0.1425 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5330-00-177-972111943A INTERCHANGEABLE
Seal,plain Encased
Brinkley Technology Group Llc Dba Hercules Manufacturing
5133-00-222-9470 INTERCHANGEABLE
Drill,twist
3110-00-227-2872 INTERCHANGEABLE
Bearing,roller,needle
1005-00-532-3138 INTERCHANGEABLE
Pin,trigger
5950-00-686-6391 INTERCHANGEABLE
Coil,radio Frequency
1680-01-167-769560381-6 INTERCHANGEABLE
Coupling,regulated
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
6350-01-359-741450414 INTERCHANGEABLE
Detector,heat
Cognitive Resources Inc Dba Gamewell Co the
7021-01-368-9056 INTERCHANGEABLE
Computer,digital
7050-01-545-703550414 INTERCHANGEABLE
Computer Subassembly
Mercury Systems, Inc. Dba Mercury Systems, Inc
4820-01-568-3205504 1/4 INTERCHANGEABLE
Valve,globe
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
Cross-Reference Index
Part NumberManufacturer
SC-B-69389-2 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
SC-D-69389-2 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
50414 Kleinschmidt Inc (USA)
Related Parts
5330-00-177-9721INTERCHANGEABLE
SEAL,PLAIN ENCASED
11943A
5133-00-222-9470INTERCHANGEABLE
DRILL,TWIST
3110-00-227-2872INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
1005-00-532-3138INTERCHANGEABLE
PIN,TRIGGER
5950-00-686-6391INTERCHANGEABLE
COIL,RADIO FREQUENCY
1680-01-167-7695INTERCHANGEABLE
COUPLING,REGULATED
60381-6
6350-01-359-7414INTERCHANGEABLE
DETECTOR,HEAT
50414
7021-01-368-9056INTERCHANGEABLE
COMPUTER,DIGITAL
7050-01-545-7035INTERCHANGEABLE
COMPUTER SUBASSEMBLY
50414
4820-01-568-3205INTERCHANGEABLE
VALVE,GLOBE
504 1/4
5340-01-699-3607INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
50414

Frequently Asked Questions

What is NSN 5310-00-523-2143?

NSN 5310-00-523-2143 is a Washer,flat, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-523-2143?

NSN 5310-00-523-2143 has 3 cross-referenced part numbers: SC-B-69389-2 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), SC-D-69389-2 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 50414 (Kleinschmidt Inc).

What NSN replaces 5310-00-523-2143?

There are 11 known substitutes for 5310-00-523-2143: 5330-00-177-9721, 5133-00-222-9470, 3110-00-227-2872 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SC-B-69389-2?

Key specifications for SC-B-69389-2: Material Document and Classification: ASTM B103 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: COPPER ALLOY OVERALL; Peripheral Shape Style: ROUND; Center Hole Shape Style: ROUND. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com