PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FF-W-100CWasher,lock

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5310-00-432-9409 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-432-9409 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-432-9409. Primary manufacturer part number: FF-W-100C.
Features
  • Washer,lock — FSC 5310
  • Countersink Angle: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
  • Hole Diameter: 0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
  • Material: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
  • Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Outside Diameter: 0.170 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
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 1055 or Steel Comp 1060 or Steel Comp 1561 or Steel Comp 1064 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-432-9409, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-432-9409
Primary Part NumberFF-W-100C
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Countersink Angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
Hole Diameter0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
Hardness Rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
MaterialSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Outside Diameter0.170 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
Style DesignatorCOUNTERSINK EXTERNAL TEETH
Surface TreatmentCADMIUM OVERALL
Material Thickness0.006 INCHES MINIMUM AND 0.010 INCHES MAXIMUM IN
Nondefinitive Spec/std Data4 TYPE AND 1 STYLE AND 1 COMPOSITION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5310-00-017-8627 INTERCHANGEABLE
Washer,lock
5310-00-019-0676MS35333-109 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-022-8834NASM35333-108 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-022-8847MS35333-110 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-188-0473 INTERCHANGEABLE
Washer,lock
5310-00-198-9343 INTERCHANGEABLE
Washer,lock
5310-00-282-9059373-0083-000 INTERCHANGEABLE
Washer,lock
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5310-00-814-4575 INTERCHANGEABLE
Washer,lock
5310-00-978-610316-1880 INTERCHANGEABLE
Washer,lock
Eaton Corp Opns & Technical Center
Cross-Reference Index
Part NumberManufacturer
FF-W-100C Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AN936C2 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
5310-00-017-8627INTERCHANGEABLE
WASHER,LOCK
5310-00-019-0676INTERCHANGEABLE
WASHER,LOCK
MS35333-109
5310-00-022-8834INTERCHANGEABLE
WASHER,LOCK
NASM35333-108
5310-00-022-8847INTERCHANGEABLE
WASHER,LOCK
MS35333-110
5310-00-188-0473INTERCHANGEABLE
WASHER,LOCK
5310-00-198-9343INTERCHANGEABLE
WASHER,LOCK
5310-00-282-9059INTERCHANGEABLE
WASHER,LOCK
373-0083-000
5310-00-814-4575INTERCHANGEABLE
WASHER,LOCK
5310-00-978-6103INTERCHANGEABLE
WASHER,LOCK
16-1880

Frequently Asked Questions

What is NSN 5310-00-432-9409?

NSN 5310-00-432-9409 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 5310-00-432-9409?

NSN 5310-00-432-9409 has 2 cross-referenced part numbers: FF-W-100C (Federal Specifications Promulgated by General Services Administration Washington DC), AN936C2 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5310-00-432-9409?

There are 9 known substitutes for 5310-00-432-9409: 5310-00-017-8627, 5310-00-019-0676, 5310-00-022-8834 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FF-W-100C?

Key specifications for FF-W-100C: Countersink Angle: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM; Hole Diameter: 0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM; Material: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL. 11 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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