PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

70233Washer,lock

Cummins Inc. · NSN 5310-01-201-3520 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-201-3520 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-201-3520. Primary manufacturer part number: 70233.
Features
  • Washer,lock — FSC 5310
  • Material Thickness: 0.047 INCHES MINIMUM IN
  • Surface Treatment: CADMIUM OVERALL
  • Hole Diameter: 0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Outside Diameter: 0.334 INCHES MAXIMUM IN
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MINIMUM
  • Style Designator: SPLIT HELICAL-RIGHT HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-201-3520, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cummins Inc.. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-201-3520
Primary Part Number70233
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCummins Inc.
StatusACTIVE
Material Thickness0.047 INCHES MINIMUM IN
Surface TreatmentCADMIUM OVERALL
Hole Diameter0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Outside Diameter0.334 INCHES MAXIMUM IN
Hardness Rating45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MINIMUM
Style DesignatorSPLIT HELICAL-RIGHT HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5950-00-045-8440900123-144 INTERCHANGEABLE
Transformer,power
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5950-00-276-5449005609 INTERCHANGEABLE
Reactor
Ge Aviation Systems Llc
5340-00-314-1636200413171-01 INTERCHANGEABLE
Holder,spring
Warner Robins Air Logistics Center
5999-00-772-19436307-3251505REV0ITEM3A INTERCHANGEABLE
Contact,electrical
Naval Ship Systems Command
5935-01-029-075470-233-1 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Se Relays Llc (magnecraft) Div Se Relays Llc (magnecraft)
5330-01-180-461470233 INTERCHANGEABLE
Gasket
Muirhead Aerospace Ltd
5120-01-434-9586 INTERCHANGEABLE
Punch,center,solid
Cross-Reference Index
Part NumberManufacturer
70233 PRIMARY Cummins Inc. (USA)
Related Parts
5950-00-045-8440INTERCHANGEABLE
TRANSFORMER,POWER
900123-144
5950-00-276-5449INTERCHANGEABLE
REACTOR
005609
5340-00-314-1636INTERCHANGEABLE
HOLDER,SPRING
200413171-01
5999-00-772-1943INTERCHANGEABLE
CONTACT,ELECTRICAL
6307-3251505REV0ITEM3A
5935-01-029-0754INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
70-233-1
5330-01-180-4614INTERCHANGEABLE
GASKET
70233
5120-01-434-9586INTERCHANGEABLE
PUNCH,CENTER,SOLID

Frequently Asked Questions

What is NSN 5310-01-201-3520?

NSN 5310-01-201-3520 is a Washer,lock, manufactured by Cummins Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-201-3520?

NSN 5310-01-201-3520 has 1 cross-referenced part number: 70233 (Cummins Inc.).

What NSN replaces 5310-01-201-3520?

There are 7 known substitutes for 5310-01-201-3520: 5950-00-045-8440, 5950-00-276-5449, 5340-00-314-1636 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 70233?

Key specifications for 70233: Material Thickness: 0.047 INCHES MINIMUM IN; Surface Treatment: CADMIUM OVERALL; Hole Diameter: 0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN; Material: STEEL OVERALL. 7 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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