PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2AT636Spacer,ring

Oshkosh Defense Llc · NSN 5365-01-161-2791 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-161-2791 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-161-2791. Primary manufacturer part number: 2AT636.
Features
  • Spacer,ring — FSC 5365
  • Overall Thickness: 0.1927 INCHES MINIMUM AND 0.1933 INCHES MAXIMUM IN
  • Outside Diameter: 2.688 INCHES NOMINAL IN
  • Features Provided: CASEHARDENED
  • 4 verified cross-references
  • Primary manufacturer: Oshkosh Defense Llc
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Spacer,ring, cataloged under National Stock Number 5365-01-161-2791, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Oshkosh Defense Llc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-01-161-2791
Primary Part Number2AT636
Item NameSpacer,ring
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerOshkosh Defense Llc
StatusACTIVE
Overall Thickness0.1927 INCHES MINIMUM AND 0.1933 INCHES MAXIMUM IN
Outside Diameter2.688 INCHES NOMINAL IN
Features ProvidedCASEHARDENED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5133-00-227-9650 INTERCHANGEABLE
Drill,twist
5310-00-805-043398718 INTERCHANGEABLE
Washer,flat
Telemechanics Inc
Cross-Reference Index
Part NumberManufacturer
2AT636 Oshkosh Defense Llc (USA)
91718 Northrop Grumman Systems Corporation (USA)
91718 Dana Commercial Vehicle Products, Llc (USA)
91718 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA)
Related Parts
5133-00-227-9650INTERCHANGEABLE
DRILL,TWIST
5310-00-805-0433INTERCHANGEABLE
WASHER,FLAT
98718

Frequently Asked Questions

What is NSN 5365-01-161-2791?

NSN 5365-01-161-2791 is a Spacer,ring, manufactured by Oshkosh Defense Llc, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-01-161-2791?

NSN 5365-01-161-2791 has 4 cross-referenced part numbers: 2AT636 (Oshkosh Defense Llc), 91718 (Northrop Grumman Systems Corporation), 91718 (Dana Commercial Vehicle Products, Llc), 91718 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems).

What NSN replaces 5365-01-161-2791?

There are 2 known substitutes for 5365-01-161-2791: 5133-00-227-9650, 5310-00-805-0433. Verify interchangeability with system specifications before substitution.

What are the specifications of 2AT636?

Key specifications for 2AT636: Overall Thickness: 0.1927 INCHES MINIMUM AND 0.1933 INCHES MAXIMUM IN; Outside Diameter: 2.688 INCHES NOMINAL IN; End Item Identification: MRAP - COMMON NSN - USED ON 2 MRAP VARIANTS AND 5 OTHER WEAPON SYSTEMS.; Features Provided: CASEHARDENED. 4 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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