PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

27009Washer,recessed

Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. · NSN 5310-00-148-4755 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-148-4755 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-148-4755. Primary manufacturer part number: 27009.
Features
  • Washer,recessed — FSC 5310
  • Recess Angle: 90.0 DEGREES NOMINAL
  • Material: STEEL COMP 8750 OVERALL
  • Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
  • Material Document and Classification: AMS 6328 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Hole Diameter: 0.567 INCHES MINIMUM AND 0.589 INCHES MAXIMUM IN
  • Material Thickness: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 8750 Overall construction
General Description

The Washer,recessed, cataloged under National Stock Number 5310-00-148-4755, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 11 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-148-4755
Primary Part Number27009
Item NameWasher,recessed
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
StatusCANCELLED
Recess Angle90.0 DEGREES NOMINAL
MaterialSTEEL COMP 8750 OVERALL
Surface Treatment Document and ClassificationAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Material Document and ClassificationAMS 6328 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentCADMIUM OVERALL
Hole Diameter0.567 INCHES MINIMUM AND 0.589 INCHES MAXIMUM IN
Material Thickness0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
Hardness Rating40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
Recess Diameter0.599 INCHES MINIMUM AND 0.621 INCHES MAXIMUM IN
Outside Diameter0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
Style DesignatorRECESSED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5920-00-837-66463823-2 INTERCHANGEABLE
Fuseholder,block
Cooper Bussmann, Llc Dba Cooper Industries
6130-00-947-287127009 INTERCHANGEABLE
Heat Sink Assembly
Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company
5310-01-191-044027009 INTERCHANGEABLE
Washer,flat
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5325-01-284-67412700-9 INTERCHANGEABLE
Stud Assembly,turnlock Fastener
Howmet Global Fastening Systems Inc Div Camloc Products
3020-01-375-8144 INTERCHANGEABLE
Gear,spur
Cross-Reference Index
Part NumberManufacturer
27009 PRIMARY Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
Related Parts
5920-00-837-6646INTERCHANGEABLE
FUSEHOLDER,BLOCK
3823-2
6130-00-947-2871INTERCHANGEABLE
HEAT SINK ASSEMBLY
27009
5310-01-191-0440INTERCHANGEABLE
WASHER,FLAT
27009
5325-01-284-6741INTERCHANGEABLE
STUD ASSEMBLY,TURNLOCK FASTENER
2700-9
3020-01-375-8144INTERCHANGEABLE
GEAR,SPUR

Frequently Asked Questions

What is NSN 5310-00-148-4755?

NSN 5310-00-148-4755 is a Washer,recessed, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-148-4755?

NSN 5310-00-148-4755 has 1 cross-referenced part number: 27009 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).

What NSN replaces 5310-00-148-4755?

There are 5 known substitutes for 5310-00-148-4755: 5920-00-837-6646, 6130-00-947-2871, 5310-01-191-0440 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 27009?

Key specifications for 27009: Recess Angle: 90.0 DEGREES NOMINAL; Material: STEEL COMP 8750 OVERALL; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: AMS 6328 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-148-4755 still in active supply?

NSN 5310-00-148-4755 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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