PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS16214-18Washer,lock

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-329-9657 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-329-9657 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-329-9657. Primary manufacturer part number: MS16214-18.
Features
  • Washer,lock — FSC 5310
  • Hole Diameter: 0.112 INCHES MINIMUM IN
  • Outside Diameter: 0.212 INCHES MAXIMUM IN
  • Material: COPPER ALLOY OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material Thickness: 0.040 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-329-9657, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 5 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-329-9657
Primary Part NumberMS16214-18
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Hole Diameter0.112 INCHES MINIMUM IN
Outside Diameter0.212 INCHES MAXIMUM IN
MaterialCOPPER ALLOY OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Thickness0.040 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-184-8996MS35338-97 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
MS16214-18 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS16214-18 Mills / Sterling Aerospace, Inc (CAN)
Related Parts
5310-00-184-8996INTERCHANGEABLE
WASHER,LOCK
MS35338-97

Frequently Asked Questions

What is NSN 5310-00-329-9657?

NSN 5310-00-329-9657 is a Washer,lock, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-329-9657?

NSN 5310-00-329-9657 has 2 cross-referenced part numbers: MS16214-18 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS16214-18 (Mills / Sterling Aerospace, Inc).

What NSN replaces 5310-00-329-9657?

There is 1 known substitute for 5310-00-329-9657: 5310-00-184-8996. Verify interchangeability with system specifications before substitution.

What are the specifications of MS16214-18?

Key specifications for MS16214-18: Hole Diameter: 0.112 INCHES MINIMUM IN; Outside Diameter: 0.212 INCHES MAXIMUM IN; Material: COPPER ALLOY OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND. 5 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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