PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27183-15Washer,flat

Leonardo Spa Helicopters Division - Production Site · NSN 5310-00-809-4061 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-809-4061 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-809-4061. Primary manufacturer part number: MS27183-15.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Criticality Code Justification: FEAT
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Nondefinitive Spec/std Data: A TYPE AND 1 GRADE AND A CLASS
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-809-4061, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 31 commercial cross-references from 23 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-809-4061
Primary Part NumberMS27183-15
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLeonardo Spa Helicopters Division - Production Site
StatusCANCELLED
MaterialSTEEL OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Criticality Code JustificationFEAT
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Nondefinitive Spec/std DataA TYPE AND 1 GRADE AND A CLASS
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Hole Diameter0.433 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Overall Diameter0.993 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Thickness0.064 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-012-0389 INTERCHANGEABLE
Washer,flat
3110-00-100-3551 INTERCHANGEABLE
Cone and Rollers,tapered Roller
5310-00-199-5742 INTERCHANGEABLE
Washer,flat
5310-00-209-0691106263 INTERCHANGEABLE
Washer,flat
Us Army Aviation and Missile Command
5310-00-270-2055120389 INTERCHANGEABLE
Washer,flat
Dressta North America Ltd
5310-00-514-69624B5271 INTERCHANGEABLE
Washer,flat
Caterpillar Inc Div Caterpillar Defense
5305-00-957-303010626-3 INTERCHANGEABLE
Screw,externally Relieved Body
Meggitt North Hollywood Inc
5330-01-097-0899 INTERCHANGEABLE
Gasket
7025-01-139-2992331967 INTERCHANGEABLE
Panel
Fluke Corp
4730-01-162-7088331967 INTERCHANGEABLE
Adapter,straight,pipe to Hose
General Motors Llc Dba General Motors Llc
Cross-Reference Index
Part NumberManufacturer
MS27183-15 Leonardo Spa Helicopters Division - Production Site (ITA)
AN945-6 Zf Industrieantriebe Witten Gmbh (DEU)
331967 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
110380A Oshkosh Defense Llc (USA)
0717580 General Dynamics European, Land-Systems-Mowag Gmbh Dba Gdels (CHE)
309346 Daf Trucks N.v. (NLD)
5310008094061 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
A22506-7 Zf Industrieantriebe Witten Gmbh (DEU)
4197515-022 Raytheon Company Div Rmd Strategic (USA)
492346 General Motors Llc Dba General Motors Llc (USA)
10082607 Nimikkeistokeskus Ncb Finland (FIN)
12387279-15 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
MS15795-15 Zf Industrieantriebe Witten Gmbh (DEU)
120389 Ed Etnyre & Co (USA)
CSA46410 Curtis Dyna-Fog, Ltd. (USA)
MS15795-115 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
38180 Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
5310PL0352231 Jednolity Indeks Materialowy - Uniform Material Index (POL)
15015 Diablo Systems Ltd (GBR)
0309346 Daf Trucks N.v. (NLD)
Related Parts
5310-00-012-0389INTERCHANGEABLE
WASHER,FLAT
3110-00-100-3551INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
5310-00-199-5742INTERCHANGEABLE
WASHER,FLAT
5310-00-209-0691INTERCHANGEABLE
WASHER,FLAT
106263
5310-00-270-2055INTERCHANGEABLE
WASHER,FLAT
120389
5310-00-514-6962INTERCHANGEABLE
WASHER,FLAT
4B5271
5305-00-957-3030INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
10626-3
5330-01-097-0899INTERCHANGEABLE
GASKET
7025-01-139-2992INTERCHANGEABLE
PANEL
331967
4730-01-162-7088INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
331967
5310-01-244-7460INTERCHANGEABLE
WASHER,FLAT
120388
5930-01-364-1147INTERCHANGEABLE
SWITCH,ELECTRONIC
38180

Frequently Asked Questions

What is NSN 5310-00-809-4061?

NSN 5310-00-809-4061 is a Washer,flat, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-809-4061?

NSN 5310-00-809-4061 has 31 cross-referenced part numbers: MS27183-15 (Leonardo Spa Helicopters Division - Production Site), AN945-6 (Zf Industrieantriebe Witten Gmbh), 331967 (General Motors Corp Chevrolet Motor Div Special Products Dept), 110380A (Oshkosh Defense Llc), 0717580 (General Dynamics European, Land-Systems-Mowag Gmbh Dba Gdels) and 26 more.

What NSN replaces 5310-00-809-4061?

There are 12 known substitutes for 5310-00-809-4061: 5310-00-012-0389, 3110-00-100-3551, 5310-00-199-5742 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27183-15?

Key specifications for MS27183-15: Material: STEEL OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Special Features: WEAPON SYSTEM ESSENTIAL. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-809-4061 still in active supply?

NSN 5310-00-809-4061 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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