PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFW84CLASSASTYLE3Washer,lock

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5310-00-013-1121 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-013-1121 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-013-1121. Primary manufacturer part number: FFW84CLASSASTYLE3.
Features
  • Washer,lock — FSC 5310
  • Surface Treatment: PHOSPHATE OVERALL
  • Surface Treatment Document and Classification: MIL-C-16232,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material Document and Classification: QQ-S-633,FS 1060 TO FS 1080 CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Nondefinitive Spec/std Data: A CLASS AND 3 STYLE
  • Outside Diameter: 0.495 INCHES MAXIMUM IN
  • Material Thickness: 0.077 INCHES NOMINAL IN
  • Material: STEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1060 or Steel Comp 1065 or Steel Comp 1070 or Steel Comp 1075 or Steel Comp 1080 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-013-1121, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-013-1121
Primary Part NumberFFW84CLASSASTYLE3
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Surface TreatmentPHOSPHATE OVERALL
Surface Treatment Document and ClassificationMIL-C-16232,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Document and ClassificationQQ-S-633,FS 1060 TO FS 1080 CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Nondefinitive Spec/std DataA CLASS AND 3 STYLE
Outside Diameter0.495 INCHES MAXIMUM IN
Material Thickness0.077 INCHES NOMINAL IN
MaterialSTEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Hole Diameter0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-010-8579 INTERCHANGEABLE
Washer,lock
5310-00-012-0638 INTERCHANGEABLE
Washer,lock
5310-00-013-1084 INTERCHANGEABLE
Washer,lock
5310-00-013-1095830 INTERCHANGEABLE
Washer,lock
John Deer Consumer Products Inc
5310-00-013-109612X544 INTERCHANGEABLE
Washer,lock
Napco International Llc Dba Napco International Inc
5310-00-013-1097 INTERCHANGEABLE
Washer,lock
5310-00-013-1098 INTERCHANGEABLE
Washer,lock
5310-00-013-1116 INTERCHANGEABLE
Washer,lock
5310-00-013-1139 INTERCHANGEABLE
Washer,lock
5310-00-013-1140 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
FFW84CLASSASTYLE3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
34845S2 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
131121 General Motors Corp (USA)
131121 General Motors Llc Dba General Motors Llc (USA)
BECX3G5 CAGE 00000
Related Parts
5310-00-010-8579INTERCHANGEABLE
WASHER,LOCK
5310-00-012-0638INTERCHANGEABLE
WASHER,LOCK
5310-00-013-1084INTERCHANGEABLE
WASHER,LOCK
5310-00-013-1095INTERCHANGEABLE
WASHER,LOCK
830
5310-00-013-1096INTERCHANGEABLE
WASHER,LOCK
12X544
5310-00-013-1097INTERCHANGEABLE
WASHER,LOCK
5310-00-013-1098INTERCHANGEABLE
WASHER,LOCK
5310-00-013-1116INTERCHANGEABLE
WASHER,LOCK
5310-00-013-1139INTERCHANGEABLE
WASHER,LOCK
5310-00-013-1140INTERCHANGEABLE
WASHER,LOCK
5310-00-013-1141INTERCHANGEABLE
WASHER,LOCK
5310-00-013-1142INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-00-013-1121?

NSN 5310-00-013-1121 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 5310-00-013-1121?

NSN 5310-00-013-1121 has 5 cross-referenced part numbers: FFW84CLASSASTYLE3 (Federal Specifications Promulgated by General Services Administration Washington DC), 34845S2 (Ford Motor Co Ford Parts and Service Div Government Part Sales), 131121 (General Motors Corp), 131121 (General Motors Llc Dba General Motors Llc), BECX3G5.

What NSN replaces 5310-00-013-1121?

There are 12 known substitutes for 5310-00-013-1121: 5310-00-010-8579, 5310-00-012-0638, 5310-00-013-1084 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FFW84CLASSASTYLE3?

Key specifications for FFW84CLASSASTYLE3: Surface Treatment: PHOSPHATE OVERALL; Surface Treatment Document and Classification: MIL-C-16232,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: QQ-S-633,FS 1060 TO FS 1080 CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nondefinitive Spec/std Data: A CLASS AND 3 STYLE. 10 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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