PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFW100Washer,lock

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5310-00-274-8680 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-274-8680 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-274-8680. Primary manufacturer part number: FFW100.
Features
  • Washer,lock — FSC 5310
  • Test Data Document: 81348-FFW100 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Nondefinitive Spec/std Data: 1 TYPE AND A GRADE AND 1 STYLE AND 1 COMPOSITION
  • Style Designator: FLAT INTERNAL TEETH
  • Material: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
  • Hole Diameter: 0.769 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN
  • Material Thickness: 0.047 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1050 or Steel Comp 1551 or Steel Comp 1552 or Steel Comp 1053 or Steel Comp 1054 or Steel Comp 1055 or Steel Comp 1059 or Steel Comp 1060 or Steel Comp 1561 or Steel Comp 1064 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-274-8680, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-274-8680
Primary Part NumberFFW100
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Test Data Document81348-FFW100 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Nondefinitive Spec/std Data1 TYPE AND A GRADE AND 1 STYLE AND 1 COMPOSITION
Style DesignatorFLAT INTERNAL TEETH
MaterialSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
Hole Diameter0.769 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN
Material Thickness0.047 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
Hardness Rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
Outside Diameter1.220 INCHES MINIMUM AND 1.245 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-550-3714MS35333-47 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
FFW100 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS35333-13 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
12Z22PC163 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5310-00-550-3714INTERCHANGEABLE
WASHER,LOCK
MS35333-47

Frequently Asked Questions

What is NSN 5310-00-274-8680?

NSN 5310-00-274-8680 is a Washer,lock, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-274-8680?

NSN 5310-00-274-8680 has 3 cross-referenced part numbers: FFW100 (Federal Specifications Promulgated by General Services Administration Washington DC), MS35333-13 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 12Z22PC163 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5310-00-274-8680?

There is 1 known substitute for 5310-00-274-8680: 5310-00-550-3714. Verify interchangeability with system specifications before substitution.

What are the specifications of FFW100?

Key specifications for FFW100: Test Data Document: 81348-FFW100 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Nondefinitive Spec/std Data: 1 TYPE AND A GRADE AND 1 STYLE AND 1 COMPOSITION; Style Designator: FLAT INTERNAL TEETH; Material: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 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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