PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

02850Washer,convex

Defense Logistics Agency Dba Defense Supply Center Philadelphia · NSN 5310-00-020-3430 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-020-3430 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-020-3430. Primary manufacturer part number: 02850.
Features
  • Washer,convex — FSC 5310
  • Hole Diameter: 0.257 INCHES NOMINAL IN
  • Material Document and Classification: MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Style Designator: CONVEX
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material Thickness: 0.068 INCHES MINIMUM AND 0.076 INCHES MAXIMUM IN
  • Material: STEEL COMP 303 OVERALL
  • Outside Diameter: 0.688 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Washer,convex, cataloged under National Stock Number 5310-00-020-3430, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-020-3430
Primary Part Number02850
Item NameWasher,convex
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerDefense Logistics Agency Dba Defense Supply Center Philadelphia
StatusACTIVE
Hole Diameter0.257 INCHES NOMINAL IN
Material Document and ClassificationMIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorCONVEX
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Thickness0.068 INCHES MINIMUM AND 0.076 INCHES MAXIMUM IN
MaterialSTEEL COMP 303 OVERALL
Outside Diameter0.688 INCHES NOMINAL IN
Surface TreatmentPASSIVATE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5365-00-297-780261423 INTERCHANGEABLE
Spacer,ring
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
9340-01-149-782461423 INTERCHANGEABLE
Window,observation
Parker Hannifin Corporation Div Hydraulic Systems Division
4810-01-219-6525 INTERCHANGEABLE
Valve,solenoid
9905-01-519-18482KK853 INTERCHANGEABLE
Plate,identification
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
61423 Aerocontrolex Group, Inc. Div Talley Actuators (USA)
02850 PRIMARY Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
Related Parts
5365-00-297-7802INTERCHANGEABLE
SPACER,RING
61423
9340-01-149-7824INTERCHANGEABLE
WINDOW,OBSERVATION
61423
4810-01-219-6525INTERCHANGEABLE
VALVE,SOLENOID
9905-01-519-1848INTERCHANGEABLE
PLATE,IDENTIFICATION
2KK853

Frequently Asked Questions

What is NSN 5310-00-020-3430?

NSN 5310-00-020-3430 is a Washer,convex, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-020-3430?

NSN 5310-00-020-3430 has 2 cross-referenced part numbers: 61423 (Aerocontrolex Group, Inc. Div Talley Actuators), 02850 (Defense Logistics Agency Dba Defense Supply Center Philadelphia).

What NSN replaces 5310-00-020-3430?

There are 4 known substitutes for 5310-00-020-3430: 5365-00-297-7802, 9340-01-149-7824, 4810-01-219-6525 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 02850?

Key specifications for 02850: Hole Diameter: 0.257 INCHES NOMINAL IN; Material Document and Classification: MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Style Designator: CONVEX; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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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