PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-21248Ring,retaining

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5325-00-804-2773 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-804-2773 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-804-2773. Primary manufacturer part number: MIL-DTL-21248.
Features
  • Ring,retaining — FSC 5325
  • Usage Design: INTERNAL
  • Casehardening Indicator: NOT CASEHARDENED
  • Material Document and Classification: FED STD 66, COMP 1066 FED STD 1ST MATERIAL RESPONSE OR FED STD 66, COMP 1069 FED STD 2ND MATERIAL RESPONSE OR FED STD 66, COMP 1070 FED STD 3RD MATERIAL RESPONSE OR FED STD 66, COMP 1072 FED STD 4TH MATERIAL RESPONSE OR FED STD 66, COMP 1074 FED STD 5TH MATERIAL RESPONSE OR FED STD 66, COMP 1075 FED STD 6TH MATERIAL RESPONSE OR FED STD 66, COMP 1078 FED STD 7TH MATERIAL RESPONSE OR FED STD 66, COMP 1080 FED STD 8TH MATERIAL RESPONSE OR FED STD 66, COMP 1084 FED STD 9TH MATERIAL RESPONSE OR FED STD 66, COMP 1085 FED STD 10TH MATERIAL RESPONSE OR FED STD 66, COMP 1086 FED STD 11TH MATERIAL RESPONSE OR FED STD 66, COMP 1090 FED STD 12TH MATERIAL RESPONSE
  • Surface Treatment: CADMIUM AND CHROMATE
  • Material: STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1085 OR STEEL COMP 1086 OR STEEL COMP 1090
  • Cross-Sectional Shape Style: RECTANGULAR
  • Outside Diameter: 2.415 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Comp 1566 or Steel Comp 1069 or Steel Comp 1070 or Steel Comp 1572 or Steel Comp 1074 or Steel Comp 1075 or Steel Comp 1078 or Steel Comp 1080 or Steel Comp 1085 or Steel Comp 1086 or Steel Comp 1090 construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-804-2773, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5325-00-804-2773
Primary Part NumberMIL-DTL-21248
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Usage DesignINTERNAL
Casehardening IndicatorNOT CASEHARDENED
Material Document and ClassificationFED STD 66, COMP 1066 FED STD 1ST MATERIAL RESPONSE OR FED STD 66, COMP 1069 FED STD 2ND MATERIAL RESPONSE OR FED STD 66, COMP 1070 FED STD 3RD MATERIAL RESPONSE OR FED STD 66, COMP 1072 FED STD 4TH MATERIAL RESPONSE OR FED STD 66, COMP 1074 FED STD 5TH MATERIAL RESPONSE OR FED STD 66, COMP 1075 FED STD 6TH MATERIAL RESPONSE OR FED STD 66, COMP 1078 FED STD 7TH MATERIAL RESPONSE OR FED STD 66, COMP 1080 FED STD 8TH MATERIAL RESPONSE OR FED STD 66, COMP 1084 FED STD 9TH MATERIAL RESPONSE OR FED STD 66, COMP 1085 FED STD 10TH MATERIAL RESPONSE OR FED STD 66, COMP 1086 FED STD 11TH MATERIAL RESPONSE OR FED STD 66, COMP 1090 FED STD 12TH MATERIAL RESPONSE
Surface TreatmentCADMIUM AND CHROMATE
MaterialSTEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1085 OR STEEL COMP 1086 OR STEEL COMP 1090
Cross-Sectional Shape StyleRECTANGULAR
Outside Diameter2.415 INCHES NOMINAL IN
Material Hardness Rating47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
Ring StyleINTERNAL
Major Thickness0.078 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5325-00-205-6674 INTERCHANGEABLE
Ring,retaining
3040-01-245-29165000218 INTERCHANGEABLE
Gearshaft,spur
Hamilton Sundstrand Corporation
5970-01-477-6471500-0218 INTERCHANGEABLE
Insulator,contact P
Avionics Specialties, Inc.
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-21248 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-R-16417 Zf Industrieantriebe Witten Gmbh (DEU)
MS16625-1218 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS16625-1218 Fnss Savunma Sistemleri Anonim Sirketi (TUR)
MIL-DTL-27426 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
N1300-218CD Seeger Inc Anderton-United Products Div (USA)
5326008042773 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
M2742640135B Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5365008042773 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
3000-X218-ST-CD Truarc Co Llc (USA)
N5000-218MF Truarc Company Llc Dba Waldes Truarc (USA)
N5000-218 Zf Industrieantriebe Witten Gmbh (DEU)
5000-218 Zf Industrieantriebe Witten Gmbh (DEU)
MS16625-1218 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5325-00-205-6674INTERCHANGEABLE
RING,RETAINING
3040-01-245-2916INTERCHANGEABLE
GEARSHAFT,SPUR
5000218
5970-01-477-6471INTERCHANGEABLE
INSULATOR,CONTACT P
500-0218

Frequently Asked Questions

What is NSN 5325-00-804-2773?

NSN 5325-00-804-2773 is a Ring,retaining, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-804-2773?

NSN 5325-00-804-2773 has 14 cross-referenced part numbers: MIL-DTL-21248 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-R-16417 (Zf Industrieantriebe Witten Gmbh), MS16625-1218 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS16625-1218 (Fnss Savunma Sistemleri Anonim Sirketi), MIL-DTL-27426 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 9 more.

What NSN replaces 5325-00-804-2773?

There are 3 known substitutes for 5325-00-804-2773: 5325-00-205-6674, 3040-01-245-2916, 5970-01-477-6471. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-21248?

Key specifications for MIL-DTL-21248: Usage Design: INTERNAL; Casehardening Indicator: NOT CASEHARDENED; Material Document and Classification: FED STD 66, COMP 1066 FED STD 1ST MATERIAL RESPONSE OR FED STD 66, COMP 1069 FED STD 2ND MATERIAL RESPONSE OR FED STD 66, COMP 1070 FED STD 3RD MATERIAL RESPONSE OR FED STD 66, COMP 1072 FED STD 4TH MATERIAL RESPONSE OR FED STD 66, COMP 1074 FED STD 5TH MATERIAL RESPONSE OR FED STD 66, COMP 1075 FED STD 6TH MATERIAL RESPONSE OR FED STD 66, COMP 1078 FED STD 7TH MATERIAL RESPONSE OR FED STD 66, COMP 1080 FED STD 8TH MATERIAL RESPONSE OR FED STD 66, COMP 1084 FED STD 9TH MATERIAL RESPONSE OR FED STD 66, COMP 1085 FED STD 10TH MATERIAL RESPONSE OR FED STD 66, COMP 1086 FED STD 11TH MATERIAL RESPONSE OR FED STD 66, COMP 1090 FED STD 12TH MATERIAL RESPONSE; Surface Treatment: CADMIUM AND CHROMATE. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-804-2773 still in active supply?

NSN 5325-00-804-2773 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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