PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILW6986TYPEAWasher,lock

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-043-1504 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-043-1504 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-043-1504. Primary manufacturer part number: MILW6986TYPEA.
Features
  • Washer,lock — FSC 5310
  • Material Thickness: 0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
  • Style Designator: FLAT INTERNAL TEETH
  • Material: STEEL CORROSION RESISTING OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Nondefinitive Spec/std Data: A TYPE
  • Hole Diameter: 0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
  • Outside Diameter: 0.255 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-043-1504, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 7 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-043-1504
Primary Part NumberMILW6986TYPEA
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Material Thickness0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
Style DesignatorFLAT INTERNAL TEETH
MaterialSTEEL CORROSION RESISTING OVERALL
Surface TreatmentPASSIVATE OVERALL
Nondefinitive Spec/std DataA TYPE
Hole Diameter0.115 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
Outside Diameter0.255 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
3110-00-156-5403 INTERCHANGEABLE
Bearing,ball,annular
7510-00-356-3252SC-D-70016-16 INTERCHANGEABLE
Typing Element
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5365-00-360-74514980694 INTERCHANGEABLE
Shim
Agco Corp Parts Opn
2910-01-079-345289452 INTERCHANGEABLE
Tank,fuel,engine
Har, Inc Dba Mercury Machine & Mfg Co Div
5330-01-121-5376H9861 INTERCHANGEABLE
Gasket
Delphi Powertrain Systems, Llc
9999-01-690-456850069 INTERCHANGEABLE
Gasket,cable
Williams International Co., L.l.c.
Cross-Reference Index
Part NumberManufacturer
MILW6986TYPEA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5006-9 New Haven Mfg Corp (USA)
Related Parts
3110-00-156-5403INTERCHANGEABLE
BEARING,BALL,ANNULAR
7510-00-356-3252INTERCHANGEABLE
TYPING ELEMENT
SC-D-70016-16
5365-00-360-7451INTERCHANGEABLE
SHIM
4980694
2910-01-079-3452INTERCHANGEABLE
TANK,FUEL,ENGINE
89452
5330-01-121-5376INTERCHANGEABLE
GASKET
H9861
9999-01-690-4568INTERCHANGEABLE
GASKET,CABLE
50069

Frequently Asked Questions

What is NSN 5310-00-043-1504?

NSN 5310-00-043-1504 is a Washer,lock, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-043-1504?

NSN 5310-00-043-1504 has 2 cross-referenced part numbers: MILW6986TYPEA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 5006-9 (New Haven Mfg Corp).

What NSN replaces 5310-00-043-1504?

There are 6 known substitutes for 5310-00-043-1504: 3110-00-156-5403, 7510-00-356-3252, 5365-00-360-7451 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILW6986TYPEA?

Key specifications for MILW6986TYPEA: Material Thickness: 0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN; Style Designator: FLAT INTERNAL TEETH; Material: STEEL CORROSION RESISTING OVERALL; Surface Treatment: PASSIVATE OVERALL. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-043-1504 still in active supply?

NSN 5310-00-043-1504 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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