PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

138166Washer,lock

General Motors Llc Dba General Motors Llc · NSN 5310-00-013-8166 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-013-8166 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-013-8166. Primary manufacturer part number: 138166.
Features
  • Washer,lock — FSC 5310
  • Material Thickness: 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
  • Hole Diameter: 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
  • Outside Diameter: 0.325 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
  • Style Designator: FLAT INTERNAL TEETH
  • Nondefinitive Spec/std Data: A TYPE
  • Surface Treatment: PHOSPHATE OVERALL
  • 3 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-013-8166, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Llc Dba General Motors Llc. Government technical data includes 6 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-013-8166
Primary Part Number138166
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Llc Dba General Motors Llc
StatusACTIVE
Material Thickness0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
Hole Diameter0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
Outside Diameter0.325 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
Style DesignatorFLAT INTERNAL TEETH
Nondefinitive Spec/std DataA TYPE
Surface TreatmentPHOSPHATE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5930-00-189-6562 INTERCHANGEABLE
Switch,push
5310-00-559-0070115544 INTERCHANGEABLE
Washer,lock
Rolls-Royce Solutions America Inc
Cross-Reference Index
Part NumberManufacturer
138166 General Motors Llc Dba General Motors Llc (USA)
MS35333-55 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
138166 General Motors Corp (USA)
Related Parts
5930-00-189-6562INTERCHANGEABLE
SWITCH,PUSH
5310-00-559-0070INTERCHANGEABLE
WASHER,LOCK
115544

Frequently Asked Questions

What is NSN 5310-00-013-8166?

NSN 5310-00-013-8166 is a Washer,lock, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-013-8166?

NSN 5310-00-013-8166 has 3 cross-referenced part numbers: 138166 (General Motors Llc Dba General Motors Llc), MS35333-55 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 138166 (General Motors Corp).

What NSN replaces 5310-00-013-8166?

There are 2 known substitutes for 5310-00-013-8166: 5930-00-189-6562, 5310-00-559-0070. Verify interchangeability with system specifications before substitution.

What are the specifications of 138166?

Key specifications for 138166: Material Thickness: 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN; Hole Diameter: 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN; Outside Diameter: 0.325 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN; Style Designator: FLAT INTERNAL TEETH. 6 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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