PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

99018-11Washer,lock

Cummins Inc. · NSN 5310-00-013-1044 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-013-1044 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-013-1044. Primary manufacturer part number: 99018-11.
Features
  • Washer,lock — FSC 5310
  • Nondefinitive Spec/std Data: A CLASS AND 2 STYLE
  • Material: STEEL COMP 1060 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Outside Diameter: 0.253 INCHES MAXIMUM IN
  • Material Thickness: 0.031 INCHES NOMINAL IN
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Material Document and Classification: ASTM A576 ASSN STD ALL MATERIAL RESPONSES OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1060 or Steel Comp 1070 or Steel Comp 1078 or Steel Comp 1080 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-013-1044, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 15 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-013-1044
Primary Part Number99018-11
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCummins Inc.
StatusCANCELLED
Nondefinitive Spec/std DataA CLASS AND 2 STYLE
MaterialSTEEL COMP 1060 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Outside Diameter0.253 INCHES MAXIMUM IN
Material Thickness0.031 INCHES NOMINAL IN
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Material Document and ClassificationASTM A576 ASSN STD ALL MATERIAL RESPONSES OVERALL
Hole Diameter0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OR ZINC OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-045-4007NASM35338-41 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5365-00-256-219483004 INTERCHANGEABLE
Spacer,special
Aerodri Corp Keco Industries Inc Div
5930-00-655-1513 INTERCHANGEABLE
Switch,toggle
5330-00-655-4752 INTERCHANGEABLE
Felt,mechanical,preformed
5310-00-733-87366LW1 INTERCHANGEABLE
Washer,lock
Fairbanks Morse, Llc
5310-00-900-5166131044 INTERCHANGEABLE
Nut,plain,hexagon
Telemechanics Inc
5821-01-063-1917 INTERCHANGEABLE
Receiving Set,radio Remote
7520-01-161-698883004 INTERCHANGEABLE
Marker,tube Type
Sanford Corp
5220-01-182-142583-004 INTERCHANGEABLE
Gage,crimping Tool
Daniels Manufacturing Corporation
5325-01-338-029283004 INTERCHANGEABLE
Ring,retaining
Ke Marine Inc Dba Ke Marine Inc
Cross-Reference Index
Part NumberManufacturer
99018-11 Cummins Inc. (USA)
AP465 Westport International, Inc. (USA)
83004 John Deer Consumer Products Inc (USA)
34801S7 Ford Motor Company (USA)
FFW84CLASSASTYLE2 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
131044 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
6LW2 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
55984 Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
131044 General Motors Corp (USA)
JHP13-430 Hollingsworth John R Co (USA)
20957-22 Midwest Metal Manufacturing Co
131044 Diamond Reo Truck Co (USA)
12Z3038PC20 Naval Ordnance Standards (USA)
34801S7 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
6LW1 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
5310000131044 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
Related Parts
5310-00-045-4007INTERCHANGEABLE
WASHER,LOCK
NASM35338-41
5365-00-256-2194INTERCHANGEABLE
SPACER,SPECIAL
83004
5930-00-655-1513INTERCHANGEABLE
SWITCH,TOGGLE
5330-00-655-4752INTERCHANGEABLE
FELT,MECHANICAL,PREFORMED
5310-00-733-8736INTERCHANGEABLE
WASHER,LOCK
6LW1
5310-00-900-5166INTERCHANGEABLE
NUT,PLAIN,HEXAGON
131044
5821-01-063-1917INTERCHANGEABLE
RECEIVING SET,RADIO REMOTE
7520-01-161-6988INTERCHANGEABLE
MARKER,TUBE TYPE
83004
5220-01-182-1425INTERCHANGEABLE
GAGE,CRIMPING TOOL
83-004
5325-01-338-0292INTERCHANGEABLE
RING,RETAINING
83004
5340-01-465-3063INTERCHANGEABLE
COVER,ACCESS
A7
6145-01-469-9993INTERCHANGEABLE
WIRE,ELECTRICAL
83004

Frequently Asked Questions

What is NSN 5310-00-013-1044?

NSN 5310-00-013-1044 is a Washer,lock, manufactured by Cummins Inc., classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-013-1044?

NSN 5310-00-013-1044 has 16 cross-referenced part numbers: 99018-11 (Cummins Inc.), AP465 (Westport International, Inc.), 83004 (John Deer Consumer Products Inc), 34801S7 (Ford Motor Company), FFW84CLASSASTYLE2 (Federal Specifications Promulgated by General Services Administration Washington DC) and 11 more.

What NSN replaces 5310-00-013-1044?

There are 12 known substitutes for 5310-00-013-1044: 5310-00-045-4007, 5365-00-256-2194, 5930-00-655-1513 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 99018-11?

Key specifications for 99018-11: Nondefinitive Spec/std Data: A CLASS AND 2 STYLE; Material: STEEL COMP 1060 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.253 INCHES MAXIMUM IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-013-1044 still in active supply?

NSN 5310-00-013-1044 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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