PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NNU1318Washer,flat

Teledyne Columbia-Summerill Co Div of Teledyne Inc · NSN 5310-00-337-6977 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-337-6977 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-337-6977. Primary manufacturer part number: NNU1318.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.438 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN
  • Overall Diameter: 0.750 INCHES NOMINAL IN
  • Thickness: 0.064 INCHES NOMINAL IN
  • Departure From Cited Designator: AS MODIFIED BY ID
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: STEEL OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-337-6977, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Teledyne Columbia-Summerill Co Div of Teledyne Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-337-6977
Primary Part NumberNNU1318
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerTeledyne Columbia-Summerill Co Div of Teledyne Inc
StatusCANCELLED
Hole Diameter0.438 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN
Overall Diameter0.750 INCHES NOMINAL IN
Thickness0.064 INCHES NOMINAL IN
Departure From Cited DesignatorAS MODIFIED BY ID
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape StyleRECTANGULAR
MaterialSTEEL OVERALL
Center Hole Shape StyleROUND
Nondefinitive Spec/std DataA TYPE AND 2 GRADE AND A CLASS
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
6240-00-660-8467129-001-0011 INTERCHANGEABLE
Lamp,incandescent
Northrop Grumman Systems Corporation
Cross-Reference Index
Part NumberManufacturer
NNU1318 Teledyne Columbia-Summerill Co Div of Teledyne Inc (USA)
FFW92TYPEAGRADE2CLASSA Federal Specifications Promulgated by General Services Administration Washington DC (USA)
G2608 Pierce Co Inc the Sub of Avis Industrial Corp (USA)
Related Parts
6240-00-660-8467INTERCHANGEABLE
LAMP,INCANDESCENT
129-001-0011

Frequently Asked Questions

What is NSN 5310-00-337-6977?

NSN 5310-00-337-6977 is a Washer,flat, manufactured by Teledyne Columbia-Summerill Co Div of Teledyne Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-337-6977?

NSN 5310-00-337-6977 has 3 cross-referenced part numbers: NNU1318 (Teledyne Columbia-Summerill Co Div of Teledyne Inc), FFW92TYPEAGRADE2CLASSA (Federal Specifications Promulgated by General Services Administration Washington DC), G2608 (Pierce Co Inc the Sub of Avis Industrial Corp).

What NSN replaces 5310-00-337-6977?

There is 1 known substitute for 5310-00-337-6977: 6240-00-660-8467. Verify interchangeability with system specifications before substitution.

What are the specifications of NNU1318?

Key specifications for NNU1318: Hole Diameter: 0.438 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN; Overall Diameter: 0.750 INCHES NOMINAL IN; Thickness: 0.064 INCHES NOMINAL IN; Departure From Cited Designator: AS MODIFIED BY ID. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-337-6977 still in active supply?

NSN 5310-00-337-6977 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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