PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2678Washer,flat

Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron · NSN 5310-00-883-9449 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-883-9449 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-883-9449. Primary manufacturer part number: 2678.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: MIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: PLASTIC POLYAMIDE NYLON OVERALL
  • Thickness: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.385 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Plastic Polyamide Nylon Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-883-9449, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron. Government technical data includes 8 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: Active.

Technical Specifications
ParameterValue
NSN5310-00-883-9449
Primary Part Number2678
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHalsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
StatusACTIVE
Material Document and ClassificationMIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape StyleRECTANGULAR
MaterialPLASTIC POLYAMIDE NYLON OVERALL
Thickness0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Hole Diameter0.385 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
Overall Diameter0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2530-00-075-5578965562R91 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
Navistar Intl Corp Truck Br Ohio Plant
5330-00-298-54644002687-4 INTERCHANGEABLE
Packing Material
Agco Corp Parts Opn
3020-00-423-08022678 INTERCHANGEABLE
Gear,helical
Clark Material Handling Company
4730-00-729-63782678 INTERCHANGEABLE
Connector,multiple,fluid Pressur
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
5920-00-916-05182678 INTERCHANGEABLE
Fuse,cartridge
Better Engineering Manufacturing Inc
5975-01-480-53962678 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
Cross-Reference Index
Part NumberManufacturer
2678 Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron (USA)
2678 Dialight Corporation (USA)
Related Parts
2530-00-075-5578INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
965562R91
5330-00-298-5464INTERCHANGEABLE
PACKING MATERIAL
4002687-4
3020-00-423-0802INTERCHANGEABLE
GEAR,HELICAL
2678
4730-00-729-6378INTERCHANGEABLE
CONNECTOR,MULTIPLE,FLUID PRESSUR
2678
5920-00-916-0518INTERCHANGEABLE
FUSE,CARTRIDGE
2678
5975-01-480-5396INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
2678

Frequently Asked Questions

What is NSN 5310-00-883-9449?

NSN 5310-00-883-9449 is a Washer,flat, manufactured by Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-883-9449?

NSN 5310-00-883-9449 has 2 cross-referenced part numbers: 2678 (Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron), 2678 (Dialight Corporation).

What NSN replaces 5310-00-883-9449?

There are 6 known substitutes for 5310-00-883-9449: 2530-00-075-5578, 5330-00-298-5464, 3020-00-423-0802 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2678?

Key specifications for 2678: Material Document and Classification: MIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Material: PLASTIC POLYAMIDE NYLON OVERALL; Thickness: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN. 8 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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