PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12156Washer,flat

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5310-00-209-6705 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-209-6705 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-209-6705. Primary manufacturer part number: 12156.
Features
  • Washer,flat — FSC 5310
  • Center Hole Shape Style: ROUND
  • Surface Treatment: CADMIUM OVERALL
  • Hole Diameter: 0.266 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Thickness: 0.035 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
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 5310-00-209-6705, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 8 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-209-6705
Primary Part Number12156
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Center Hole Shape StyleROUND
Surface TreatmentCADMIUM OVERALL
Hole Diameter0.266 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Thickness0.035 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Overall Diameter0.469 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5330-00-215-7209 INTERCHANGEABLE
Gasket
6130-00-407-8108C501000076 INTERCHANGEABLE
Power Supply
Kearfott Corporation Div Guidance and Navigation Division
5330-00-447-672512156 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
6610-00-955-201912156 INTERCHANGEABLE
Shaft Assy
Aerosonic Llc
3455-01-221-593612156 INTERCHANGEABLE
Trepanning Tool,machine
Hougen Manufacturing, Inc
5940-01-300-463012156 INTERCHANGEABLE
Terminal,quick Disconnect
Auto Vehicle Parts Co Dba Au-Ve-Co
3010-01-414-791212582 INTERCHANGEABLE
Coupling,shaft,rigid
B.w. Elliott Manufacturing Co., Llc
3010-01-463-0811B-805-12156-501 INTERCHANGEABLE
Drive Unit,angle
B.w. Elliott Manufacturing Co., Llc
5920-01-532-8131 INTERCHANGEABLE
Fuse,cartridge
6515-01-575-207306-3107 INTERCHANGEABLE
Blade,surgical Knife,detachable
Sklar Corporation Dba Sklar Instruments
Cross-Reference Index
Part NumberManufacturer
12156 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
5330-00-215-7209INTERCHANGEABLE
GASKET
6130-00-407-8108INTERCHANGEABLE
POWER SUPPLY
C501000076
5330-00-447-6725INTERCHANGEABLE
GASKET
12156
6610-00-955-2019INTERCHANGEABLE
SHAFT ASSY
12156
3455-01-221-5936INTERCHANGEABLE
TREPANNING TOOL,MACHINE
12156
5940-01-300-4630INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
12156
3010-01-414-7912INTERCHANGEABLE
COUPLING,SHAFT,RIGID
12582
3010-01-463-0811INTERCHANGEABLE
DRIVE UNIT,ANGLE
B-805-12156-501
5920-01-532-8131INTERCHANGEABLE
FUSE,CARTRIDGE
6515-01-575-2073INTERCHANGEABLE
BLADE,SURGICAL KNIFE,DETACHABLE
06-3107

Frequently Asked Questions

What is NSN 5310-00-209-6705?

NSN 5310-00-209-6705 is a Washer,flat, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-209-6705?

NSN 5310-00-209-6705 has 1 cross-referenced part number: 12156 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 5310-00-209-6705?

There are 10 known substitutes for 5310-00-209-6705: 5330-00-215-7209, 6130-00-407-8108, 5330-00-447-6725 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12156?

Key specifications for 12156: Center Hole Shape Style: ROUND; Surface Treatment: CADMIUM OVERALL; Hole Diameter: 0.266 INCHES NOMINAL IN; Material: STEEL 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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