PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

930502Washer,flat

Bae Systems Information and Electronic Systems Integration Inc. · NSN 5310-01-186-1257 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-186-1257 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-186-1257. Primary manufacturer part number: 930502.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: QQ-S-766,COND A,FINISH 2B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL COMP 304 OVERALL
  • Surface Treatment Document and Classification: QQ-P-35,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-35,TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Overall Diameter: 0.312 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.098 INCHES NOMINAL IN
  • Thickness: 0.031 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 304 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-186-1257, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc.. Government technical data includes 10 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-186-1257
Primary Part Number930502
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc.
StatusACTIVE
Material Document and ClassificationQQ-S-766,COND A,FINISH 2B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 304 OVERALL
Surface Treatment Document and ClassificationQQ-P-35,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-35,TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Overall Diameter0.312 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Hole Diameter0.098 INCHES NOMINAL IN
Thickness0.031 INCHES NOMINAL IN
Surface TreatmentPASSIVATE OVERALL
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
9150-00-273-8663801369 INTERCHANGEABLE
Lubricating Oil,vacuum Pump
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
930502 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. (USA)
Related Parts
9150-00-273-8663INTERCHANGEABLE
LUBRICATING OIL,VACUUM PUMP
801369

Frequently Asked Questions

What is NSN 5310-01-186-1257?

NSN 5310-01-186-1257 is a Washer,flat, manufactured by Bae Systems Information and Electronic Systems Integration Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-186-1257?

NSN 5310-01-186-1257 has 1 cross-referenced part number: 930502 (Bae Systems Information and Electronic Systems Integration Inc.).

What NSN replaces 5310-01-186-1257?

There is 1 known substitute for 5310-01-186-1257: 9150-00-273-8663. Verify interchangeability with system specifications before substitution.

What are the specifications of 930502?

Key specifications for 930502: Material Document and Classification: QQ-S-766,COND A,FINISH 2B FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL COMP 304 OVERALL; Surface Treatment Document and Classification: QQ-P-35,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-35,TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.312 INCHES NOMINAL IN. 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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