PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21308-1Washer,saddle

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-197-3331 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-197-3331 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-197-3331. Primary manufacturer part number: MS21308-1.
Features
  • Washer,saddle — FSC 5310
  • Material: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR IRON OVERALL
  • Hole Diameter: 0.688 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-S-698 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-698 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-698 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-698 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-698 FED SPEC 5TH MATERIAL RESPONSE OR QQ-I-666 FED SPEC ALL MATERIAL RESPONSES OVERALL
  • Surface Treatment: ZINC OVERALL
  • Style Designator: SADDLE
  • Material Thickness: 0.125 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
  • 2 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1008 or Steel Comp 1009 or Steel Comp 1015 or Steel Comp 1018 or Steel Comp 1020 or Iron Overall construction
General Description

The Washer,saddle, cataloged under National Stock Number 5310-00-197-3331, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5310-00-197-3331
Primary Part NumberMS21308-1
Item NameWasher,saddle
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
MaterialSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR IRON OVERALL
Hole Diameter0.688 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Material Document and ClassificationQQ-S-698 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-698 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-698 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-698 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-698 FED SPEC 5TH MATERIAL RESPONSE OR QQ-I-666 FED SPEC ALL MATERIAL RESPONSES OVERALL
Surface TreatmentZINC OVERALL
Style DesignatorSADDLE
Material Thickness0.125 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5935-00-187-07136822 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
5330-00-189-9712 INTERCHANGEABLE
Packing
2530-00-449-7357592255C91 INTERCHANGEABLE
Parts Kit,hydraulic Brake Wheel
Navistar Intl Corp Truck Br Ohio Plant
6510-00-559-31736822 INTERCHANGEABLE
Sponge,laparotomy
Cardinal Health 200, Llc
5305-00-639-50096822 INTERCHANGEABLE
Setscrew
Eaton Aerospace, Llc Dba Jackson South
1305-00-810-8248 INTERCHANGEABLE
Cartridge,caliber .22
5961-01-045-3276536496-2 INTERCHANGEABLE
Semiconductor Devices,unitized
Raytheon Company Dba Raytheon
5961-01-064-4209006215 INTERCHANGEABLE
Rectifier,semiconductor Device,u
Ge Aviation Systems Llc Dba Ge Aviation Systems Llc
4820-01-249-1321682-2 INTERCHANGEABLE
Valve,check
Admiral Valve Llc Dba Cpv Manufacturing
6530-01-283-65386822 INTERCHANGEABLE
Tube Assembly,respiratory Therap
Bird Products Corp
Cross-Reference Index
Part NumberManufacturer
MS21308-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
6822 La Chance Ltd (USA)
Related Parts
5935-00-187-0713INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
6822
5330-00-189-9712INTERCHANGEABLE
PACKING
2530-00-449-7357INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE WHEEL
592255C91
6510-00-559-3173INTERCHANGEABLE
SPONGE,LAPAROTOMY
6822
5305-00-639-5009INTERCHANGEABLE
SETSCREW
6822
1305-00-810-8248INTERCHANGEABLE
CARTRIDGE,CALIBER .22
5961-01-045-3276INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
536496-2
5961-01-064-4209INTERCHANGEABLE
RECTIFIER,SEMICONDUCTOR DEVICE,U
006215
4820-01-249-1321INTERCHANGEABLE
VALVE,CHECK
682-2
6530-01-283-6538INTERCHANGEABLE
TUBE ASSEMBLY,RESPIRATORY THERAP
6822
6510-01-286-5306INTERCHANGEABLE
BANDAGE,CAST,IMPREGNATED
6822A
6515-01-393-0319INTERCHANGEABLE
SUPPORT,ARCH
6822 BFO FREEDOM SIZE 2M

Frequently Asked Questions

What is NSN 5310-00-197-3331?

NSN 5310-00-197-3331 is a Washer,saddle, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-197-3331?

NSN 5310-00-197-3331 has 2 cross-referenced part numbers: MS21308-1 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 6822 (La Chance Ltd).

What NSN replaces 5310-00-197-3331?

There are 12 known substitutes for 5310-00-197-3331: 5935-00-187-0713, 5330-00-189-9712, 2530-00-449-7357 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21308-1?

Key specifications for MS21308-1: Overall Width: 2.375 INCHES MINIMUM AND 2.625 INCHES MAXIMUM IN; Material: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR IRON OVERALL; Hole Diameter: 0.688 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-698 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-698 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-698 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-698 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-698 FED SPEC 5TH MATERIAL RESPONSE OR QQ-I-666 FED SPEC ALL MATERIAL RESPONSES OVERALL. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-197-3331 still in active supply?

NSN 5310-00-197-3331 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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