PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

381637PC109Washer,flat

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5310-00-185-0944 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-185-0944 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-185-0944. Primary manufacturer part number: 381637PC109.
Features
  • Washer,flat — FSC 5310
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Material Document and Classification: QQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL
  • Center Hole Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy 268 or Copper Alloy 11 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-185-0944, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-185-0944
Primary Part Number381637PC109
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM OVERALL
Material Document and ClassificationQQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Hole Diameter0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
Overall Diameter0.433 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN
MaterialCOPPER ALLOY 268 OR COPPER ALLOY 11 OVERALL
Thickness0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-637-4390 INTERCHANGEABLE
Washer,flat
5310-01-169-8269 INTERCHANGEABLE
Washer,flat
Cross-Reference Index
Part NumberManufacturer
381637PC109 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
1361226-19 Zf Industrieantriebe Witten Gmbh (DEU)
AN960B10 Aeronautical Standards Group Dept of Navy and Air Force (USA)
004-003081-035 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
Related Parts
5310-00-637-4390INTERCHANGEABLE
WASHER,FLAT
5310-01-169-8269INTERCHANGEABLE
WASHER,FLAT

Frequently Asked Questions

What is NSN 5310-00-185-0944?

NSN 5310-00-185-0944 is a Washer,flat, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-185-0944?

NSN 5310-00-185-0944 has 4 cross-referenced part numbers: 381637PC109 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 1361226-19 (Zf Industrieantriebe Witten Gmbh), AN960B10 (Aeronautical Standards Group Dept of Navy and Air Force), 004-003081-035 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple).

What NSN replaces 5310-00-185-0944?

There are 2 known substitutes for 5310-00-185-0944: 5310-00-637-4390, 5310-01-169-8269. Verify interchangeability with system specifications before substitution.

What are the specifications of 381637PC109?

Key specifications for 381637PC109: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Surface Treatment: CADMIUM OVERALL; Material Document and Classification: QQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL; Center Hole Shape Style: ROUND. 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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