PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2666Washer,shouldered

Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron · NSN 5310-00-998-3235 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-998-3235 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-998-3235. Primary manufacturer part number: 2666.
Features
  • Washer,shouldered — FSC 5310
  • Shoulder Height: 0.031 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
  • Style Designator: SHOULDERED
  • Material Document and Classification: MIL-M-20693 MIL SPEC 1ST MATERIAL RESPONSE OVERALL
  • Color: BLACK AND GRAY/GREY OVERALL
  • Material Thickness: 0.062 INCHES NOMINAL IN
  • Shoulder Diameter: 0.302 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
  • Hole Diameter: 0.193 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,shouldered, cataloged under National Stock Number 5310-00-998-3235, 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 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-998-3235
Primary Part Number2666
Item NameWasher,shouldered
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHalsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
StatusACTIVE
Shoulder Height0.031 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
Style DesignatorSHOULDERED
Material Document and ClassificationMIL-M-20693 MIL SPEC 1ST MATERIAL RESPONSE OVERALL
ColorBLACK AND GRAY/GREY OVERALL
Material Thickness0.062 INCHES NOMINAL IN
Shoulder Diameter0.302 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
Hole Diameter0.193 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
Outside Diameter0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5975-00-296-0762J3356 INTERCHANGEABLE
Rod,ground
Joslyn Corp
5310-00-297-89422666 INTERCHANGEABLE
Nut,plain,hexagon
Telemechanics Inc
2530-00-430-9527 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
5325-00-489-30831068D100ITEMS INTERCHANGEABLE
Grommet,nonmetallic
S F Appliance Ltd
5330-00-559-2490282-7804-805031PC2666 INTERCHANGEABLE
Gasket
Naval Ship Systems Command
5310-01-009-69782666 INTERCHANGEABLE
Nut,plain,hexagon
Tyco Fire Products Lp
2940-01-123-268142666 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
5998-01-127-52085478208 INTERCHANGEABLE
Circuit Card Assembly
Naval Sea Systems Command
5355-01-292-46842666 INTERCHANGEABLE
Dial,control
Bi Technologies Corporation Div Bi Technologies Corp.
4530-01-368-76212666 INTERCHANGEABLE
Burner,oil,pressure Atomizing
Rosco Mfg Co
Cross-Reference Index
Part NumberManufacturer
PFFW92-003-01 Us Army Aviation and Missile Command (USA)
0N154050 Zf Industrieantriebe Witten Gmbh (DEU)
2693164 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
16-068F02M00 Concurrent Computer Corporation (USA)
70-513502-2 Zf Industrieantriebe Witten Gmbh (DEU)
16-068F02 Concurrent Computer Corporation (USA)
16-068F02 M00 R00 Concurrent Computer Corporation (USA)
2666 PRIMARY Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron (USA)
2666 Dialight Corporation (USA)
Related Parts
5975-00-296-0762INTERCHANGEABLE
ROD,GROUND
J3356
5310-00-297-8942INTERCHANGEABLE
NUT,PLAIN,HEXAGON
2666
2530-00-430-9527INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
5325-00-489-3083INTERCHANGEABLE
GROMMET,NONMETALLIC
1068D100ITEMS
5330-00-559-2490INTERCHANGEABLE
GASKET
282-7804-805031PC2666
5310-01-009-6978INTERCHANGEABLE
NUT,PLAIN,HEXAGON
2666
2940-01-123-2681INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42666
5998-01-127-5208INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5478208
5355-01-292-4684INTERCHANGEABLE
DIAL,CONTROL
2666
4530-01-368-7621INTERCHANGEABLE
BURNER,OIL,PRESSURE ATOMIZING
2666

Frequently Asked Questions

What is NSN 5310-00-998-3235?

NSN 5310-00-998-3235 is a Washer,shouldered, 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 5310-00-998-3235?

NSN 5310-00-998-3235 has 9 cross-referenced part numbers: PFFW92-003-01 (Us Army Aviation and Missile Command), 0N154050 (Zf Industrieantriebe Witten Gmbh), 2693164 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 16-068F02M00 (Concurrent Computer Corporation), 70-513502-2 (Zf Industrieantriebe Witten Gmbh) and 4 more.

What NSN replaces 5310-00-998-3235?

There are 10 known substitutes for 5310-00-998-3235: 5975-00-296-0762, 5310-00-297-8942, 2530-00-430-9527 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2666?

Key specifications for 2666: Shoulder Height: 0.031 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN; Style Designator: SHOULDERED; Material Document and Classification: MIL-M-20693 MIL SPEC 1ST MATERIAL RESPONSE OVERALL; Color: BLACK AND GRAY/GREY OVERALL. 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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