PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43487Washer,flat

E-Systems Inc Montek Div Fluid Controls Opns · NSN 5310-00-413-9815 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-413-9815 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-413-9815. Primary manufacturer part number: 43487.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 0.545 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN
  • Material: STEEL COMP 301 OR STEEL COMP 302 OVERALL
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
  • Material Document and Classification: MIL-S-5059 HALF HARD TO FULL HARD MIL SPEC ALL MATERIAL RESPONSES OVERALL
  • Thickness: 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 301 or Steel Comp 302 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-413-9815, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is E-Systems Inc Montek Div Fluid Controls Opns. 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-413-9815
Primary Part Number43487
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerE-Systems Inc Montek Div Fluid Controls Opns
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.545 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN
MaterialSTEEL COMP 301 OR STEEL COMP 302 OVERALL
Peripheral Shape StyleROUND
Hole Diameter0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
Material Document and ClassificationMIL-S-5059 HALF HARD TO FULL HARD MIL SPEC ALL MATERIAL RESPONSES OVERALL
Thickness0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Surface Treatment Document and ClassificationMIL-S-2607 CLASS 2 GRADE A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentNICKEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-133-3969 INTERCHANGEABLE
Gasket
3825-00-491-3353A49609 INTERCHANGEABLE
Cable End
Allianz Sweeper Company
2520-00-619-4735 INTERCHANGEABLE
Guard
6515-00-754-28398881250289 INTERCHANGEABLE
Needle,hypodermic
Cardinal Health 200, Llc
5955-00-952-061243487 INTERCHANGEABLE
Oscillator,noncrystal Controlled
L3harris Technologies, Inc. Div Space and Airborne Systems
Cross-Reference Index
Part NumberManufacturer
43487 E-Systems Inc Montek Div Fluid Controls Opns (USA)
43487 Moog Inc Div Moog Inc., Space and Defense - Salt Lake City (USA)
43487 Moog Inc (USA)
43487 Mid-America Aerotech, Llc (USA)
Related Parts
5330-00-133-3969INTERCHANGEABLE
GASKET
3825-00-491-3353INTERCHANGEABLE
CABLE END
A49609
2520-00-619-4735INTERCHANGEABLE
GUARD
6515-00-754-2839INTERCHANGEABLE
NEEDLE,HYPODERMIC
8881250289
5955-00-952-0612INTERCHANGEABLE
OSCILLATOR,NONCRYSTAL CONTROLLED
43487

Frequently Asked Questions

What is NSN 5310-00-413-9815?

NSN 5310-00-413-9815 is a Washer,flat, manufactured by E-Systems Inc Montek Div Fluid Controls Opns, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-413-9815?

NSN 5310-00-413-9815 has 4 cross-referenced part numbers: 43487 (E-Systems Inc Montek Div Fluid Controls Opns), 43487 (Moog Inc Div Moog Inc., Space and Defense - Salt Lake City), 43487 (Moog Inc), 43487 (Mid-America Aerotech, Llc).

What NSN replaces 5310-00-413-9815?

There are 5 known substitutes for 5310-00-413-9815: 5330-00-133-3969, 3825-00-491-3353, 2520-00-619-4735 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 43487?

Key specifications for 43487: Cross-Sectional Shape Style: RECTANGULAR; Overall Diameter: 0.545 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN; Material: STEEL COMP 301 OR STEEL COMP 302 OVERALL; Peripheral 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.
PartsTable Design LLC · partstable.com