PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35338-59Washer,lock

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-274-8704 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-274-8704 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-274-8704. Primary manufacturer part number: MS35338-59.
Features
  • Washer,lock — FSC 5310
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Surface Treatment: PHOSPHATE OVERALL
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment Document and Classification: MIL-P-16232,TY Z MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material: STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
  • Material Thickness: 0.025 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
  • Hole Diameter: 0.115 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1060 or Steel Comp 1561 or Steel Comp 1064 or Steel Comp 1065 or Steel Comp 1566 or Steel Comp 1069 or Steel Comp 1070 or Steel Comp 1572 or Steel Comp 1074 or Steel Comp 1075 or Steel Comp 1080 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-274-8704, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5310-00-274-8704
Primary Part NumberMS35338-59
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
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Surface TreatmentPHOSPHATE OVERALL
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Surface Treatment Document and ClassificationMIL-P-16232,TY Z MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MaterialSTEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
Material Thickness0.025 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
Hole Diameter0.115 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN
Outside Diameter0.209 INCHES MAXIMUM IN
Style DesignatorSPLIT HELICAL-RIGHT HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-543-2410MS35338-40 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
MS35338-59 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
12Z22PC846 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
2190-0019 Hewlett-Packard Company Dba HP (USA)
43W6335-10 Naval Ordnance Standards (USA)
Related Parts
5310-00-543-2410INTERCHANGEABLE
WASHER,LOCK
MS35338-40

Frequently Asked Questions

What is NSN 5310-00-274-8704?

NSN 5310-00-274-8704 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 5310-00-274-8704?

NSN 5310-00-274-8704 has 4 cross-referenced part numbers: MS35338-59 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 12Z22PC846 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 2190-0019 (Hewlett-Packard Company Dba HP), 43W6335-10 (Naval Ordnance Standards).

What NSN replaces 5310-00-274-8704?

There is 1 known substitute for 5310-00-274-8704: 5310-00-543-2410. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35338-59?

Key specifications for MS35338-59: Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Surface Treatment: PHOSPHATE OVERALL; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Surface Treatment Document and Classification: MIL-P-16232,TY Z MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 9 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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