PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9663Ring,retaining

Tennant Company · NSN 5325-00-803-9977 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-803-9977 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-803-9977. Primary manufacturer part number: 9663.
Features
  • Ring,retaining — FSC 5325
  • Material: STEEL
  • Material Document and Classification: FED-STD-66,NO. 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE
  • Usage Design: EXTERNAL
  • Inside Diameter: 2.543 INCHES NOMINAL IN
  • Major Thickness: 0.093 INCHES NOMINAL IN
  • Casehardening Indicator: NOT CASEHARDENED
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-803-9977, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Tennant Company. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 14 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5325-00-803-9977
Primary Part Number9663
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerTennant Company
StatusCANCELLED
MaterialSTEEL
Material Document and ClassificationFED-STD-66,NO. 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE
Usage DesignEXTERNAL
Inside Diameter2.543 INCHES NOMINAL IN
Major Thickness0.093 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Cross-Sectional Shape StyleRECTANGULAR
Material Hardness Rating47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
Ring StyleEXTERNAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5935-00-129-3112 INTERCHANGEABLE
Socket,plug-in Electronic Compon
5325-00-200-7234 INTERCHANGEABLE
Ring,retaining
5120-00-237-8173 INTERCHANGEABLE
Screwdriver,cross Tip
5935-00-439-3755128C570H02 INTERCHANGEABLE
Connector,receptacle,electrical
Northrop Grumman Support Services Corp
5325-00-763-9328RST-275 INTERCHANGEABLE
Ring,retaining
Spirolox Inc
4820-00-871-841406324001127 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5950-00-953-9216712030-005 INTERCHANGEABLE
Transformer,radio Frequency
Raytheon Company Div Rmd Strategic
4820-01-068-298120CS169-1-4-76T105 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
6510-01-093-546423275-470 INTERCHANGEABLE
Sponge,surgical
Becton, Dickinson and Co Dba Becton Dickinson & Co
5325-01-103-78025100-275 INTERCHANGEABLE
Ring,retaining
Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
Part NumberManufacturer
9663 Tennant Company (USA)
5100-275 Truarc Company Llc Dba Waldes Truarc (USA)
3100-275 Truarc Co Llc (USA)
22054X Massey-Ferguson Inc Gear and Shaft Plant Div (USA)
MS16624-275 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
507688 Volvo Construction Equipment North America, Llc (USA)
T-N-275 Eaton Corp Engineered Fasteners Div (USA)
6900795 Eaton Corp Forestry and Construction Equipment Div Batavia Plant (USA)
MILR21248 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5100-275 Rotor Clip Company, Inc. (USA)
3100-275 Rotor Clip Company, Inc. (USA)
RST275 Spir-O-Lok Inc (USA)
507688 Vme Americas Inc Sub of Vme Group N V (USA)
507688 Clark Equipment Co (USA)
RSN275 Spir-O-Lok Inc (USA)
58905 Hyster-Yale Group, Inc. (USA)
E-N-275 Eaton Corp Engineered Fasteners Div (USA)
Related Parts
5935-00-129-3112INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
5325-00-200-7234INTERCHANGEABLE
RING,RETAINING
5120-00-237-8173INTERCHANGEABLE
SCREWDRIVER,CROSS TIP
5935-00-439-3755INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
128C570H02
5325-00-763-9328INTERCHANGEABLE
RING,RETAINING
RST-275
4820-00-871-8414INTERCHANGEABLE
DISK,VALVE
06324001127
5950-00-953-9216INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
712030-005
4820-01-068-2981INTERCHANGEABLE
VALVE,SAFETY RELIEF
20CS169-1-4-76T105
6510-01-093-5464INTERCHANGEABLE
SPONGE,SURGICAL
23275-470
5325-01-103-7802INTERCHANGEABLE
RING,RETAINING
5100-275
6515-01-273-1802INTERCHANGEABLE
SYRINGE,HYPODERMIC
309653
6240-01-299-6407INTERCHANGEABLE
LAMP ASSEMBLY
59702

Frequently Asked Questions

What is NSN 5325-00-803-9977?

NSN 5325-00-803-9977 is a Ring,retaining, manufactured by Tennant Company, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-803-9977?

NSN 5325-00-803-9977 has 17 cross-referenced part numbers: 9663 (Tennant Company), 5100-275 (Truarc Company Llc Dba Waldes Truarc), 3100-275 (Truarc Co Llc), 22054X (Massey-Ferguson Inc Gear and Shaft Plant Div), MS16624-275 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 12 more.

What NSN replaces 5325-00-803-9977?

There are 12 known substitutes for 5325-00-803-9977: 5935-00-129-3112, 5325-00-200-7234, 5120-00-237-8173 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9663?

Key specifications for 9663: Material: STEEL; Material Document and Classification: FED-STD-66,NO. 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE; Usage Design: EXTERNAL; Inside Diameter: 2.543 INCHES NOMINAL IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-803-9977 still in active supply?

NSN 5325-00-803-9977 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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