PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

110S25Washer,key

Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) · NSN 5310-00-222-0716 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-222-0716 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-222-0716. Primary manufacturer part number: 110S25.
Features
  • Washer,key — FSC 5310
  • Material Document and Classification: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
  • Style Designator: KEY
  • Internal Key Quantity: 1
  • Outside Diameter: 2.375 INCHES MINIMUM IN
  • Distance From Centerline to Top of Internal Key: 0.845 INCHES MINIMUM AND 0.855 INCHES MAXIMUM IN
  • Hole Diameter: 1.945 INCHES MINIMUM AND 1.955 INCHES MAXIMUM IN
  • Material: STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1020 OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1018 or Steel Comp 1025 or Steel Comp 1020 Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-222-0716, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St). Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-222-0716
Primary Part Number110S25
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHoneywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St)
StatusACTIVE
Material Document and ClassificationASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
Style DesignatorKEY
Internal Key Quantity1
Outside Diameter2.375 INCHES MINIMUM IN
Distance From Centerline to Top of Internal Key0.845 INCHES MINIMUM AND 0.855 INCHES MAXIMUM IN
Hole Diameter1.945 INCHES MINIMUM AND 1.955 INCHES MAXIMUM IN
MaterialSTEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1020 OVERALL
Material Thickness0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Internal Straight Key Width0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5977-00-165-0791 INTERCHANGEABLE
Brush,electrical Contact
4730-00-889-7684SAE J512 8-4 010101B INTERCHANGEABLE
Nipple,tube
Sae International Dba Sae International
9650-01-099-8143 INTERCHANGEABLE
Ingot,aluminum Alloy
Cross-Reference Index
Part NumberManufacturer
110S25 PRIMARY Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) (USA)
MS21258-31 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS21258-31 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
A35-6 United Industrial Corp (USA)
AN7503-31 Aeronautical Standards Group Dept of Navy and Air Force (USA)
AC32A509-2 Safety for Visual Education (USA)
Related Parts
5977-00-165-0791INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
4730-00-889-7684INTERCHANGEABLE
NIPPLE,TUBE
SAE J512 8-4 010101B
9650-01-099-8143INTERCHANGEABLE
INGOT,ALUMINUM ALLOY

Frequently Asked Questions

What is NSN 5310-00-222-0716?

NSN 5310-00-222-0716 is a Washer,key, manufactured by Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St), classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-222-0716?

NSN 5310-00-222-0716 has 6 cross-referenced part numbers: 110S25 (Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St)), MS21258-31 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS21258-31 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), A35-6 (United Industrial Corp), AN7503-31 (Aeronautical Standards Group Dept of Navy and Air Force) and 1 more.

What NSN replaces 5310-00-222-0716?

There are 3 known substitutes for 5310-00-222-0716: 5977-00-165-0791, 4730-00-889-7684, 9650-01-099-8143. Verify interchangeability with system specifications before substitution.

What are the specifications of 110S25?

Key specifications for 110S25: Material Document and Classification: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL; Style Designator: KEY; Internal Key Quantity: 1; Outside Diameter: 2.375 INCHES MINIMUM IN. 9 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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