PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20TUSSSleeve,clinch,tube Fitting

Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division · NSN 4730-00-800-3121 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-800-3121 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-800-3121. Primary manufacturer part number: 20TUSS.
Features
  • Sleeve,clinch,tube Fitting — FSC 4730
  • Casehardening Indicator: NOT CASEHARDENED
  • Flange Outside Diameter: 1.446 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: 22 FIGURE AND A STYLE
  • Style Designator: FLARELESS
  • Surface Treatment: PASSIVATE
  • Material: STEEL CORROSION RESISTING
  • Hose/tube Outside Diameter for Which Designed: 1.250 INCHES NOMINAL IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Sleeve,clinch,tube Fitting, cataloged under National Stock Number 4730-00-800-3121, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-800-3121
Primary Part Number20TUSS
Item NameSleeve,clinch,tube Fitting
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerParker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division
StatusACTIVE
Casehardening IndicatorNOT CASEHARDENED
Flange Outside Diameter1.446 INCHES NOMINAL IN
Nondefinitive Spec/std Data22 FIGURE AND A STYLE
Style DesignatorFLARELESS
Surface TreatmentPASSIVATE
MaterialSTEEL CORROSION RESISTING
Hose/tube Outside Diameter for Which Designed1.250 INCHES NOMINAL IN
Metallic Hardness Rating70.0 MINIMUM ROCKWELL B AND 95.0 MAXIMUM ROCKWELL B
Sleeve Outside Diameter1.341 INCHES NOMINAL IN
Seat Angle in Deg40.000
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-466-7467 INTERCHANGEABLE
Locknut,tube Fitting
4730-00-727-9786 INTERCHANGEABLE
Elbow,tube
4730-00-800-1735 INTERCHANGEABLE
Tee,tube to Boss
4730-00-800-3129 INTERCHANGEABLE
Sleeve,clinch,tube Fitting
4730-00-800-4790 INTERCHANGEABLE
Nut,tube Coupling
4730-00-801-3466 INTERCHANGEABLE
Nipple,tube
4730-00-849-9692 INTERCHANGEABLE
Tee,tube
4730-01-012-3977 INTERCHANGEABLE
Elbow,tube
4730-01-017-1246 INTERCHANGEABLE
Union,tube
4730-01-017-1457 INTERCHANGEABLE
Nut,tube Coupling
Cross-Reference Index
Part NumberManufacturer
20TUSS Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
FIG22STYLEA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS51825-11SSA Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-18866 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILF21467 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
20TUSS Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
Related Parts
4730-00-466-7467INTERCHANGEABLE
LOCKNUT,TUBE FITTING
4730-00-727-9786INTERCHANGEABLE
ELBOW,TUBE
4730-00-800-1735INTERCHANGEABLE
TEE,TUBE TO BOSS
4730-00-800-3129INTERCHANGEABLE
SLEEVE,CLINCH,TUBE FITTING
4730-00-800-4790INTERCHANGEABLE
NUT,TUBE COUPLING
4730-00-801-3466INTERCHANGEABLE
NIPPLE,TUBE
4730-00-849-9692INTERCHANGEABLE
TEE,TUBE
4730-01-012-3977INTERCHANGEABLE
ELBOW,TUBE
4730-01-017-1246INTERCHANGEABLE
UNION,TUBE
4730-01-017-1457INTERCHANGEABLE
NUT,TUBE COUPLING
4730-01-017-1458INTERCHANGEABLE
NUT,TUBE COUPLING
4730-01-020-7517INTERCHANGEABLE
SLEEVE,CLINCH,TUBE FITTING

Frequently Asked Questions

What is NSN 4730-00-800-3121?

NSN 4730-00-800-3121 is a Sleeve,clinch,tube Fitting, manufactured by Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-800-3121?

NSN 4730-00-800-3121 has 6 cross-referenced part numbers: 20TUSS (Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division), FIG22STYLEA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS51825-11SSA (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-18866 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILF21467 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 4730-00-800-3121?

There are 12 known substitutes for 4730-00-800-3121: 4730-00-466-7467, 4730-00-727-9786, 4730-00-800-1735 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20TUSS?

Key specifications for 20TUSS: Casehardening Indicator: NOT CASEHARDENED; Flange Outside Diameter: 1.446 INCHES NOMINAL IN; Nondefinitive Spec/std Data: 22 FIGURE AND A STYLE; Style Designator: FLARELESS. 11 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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