PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28021Ring,externally Threaded

Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc. · NSN 5365-01-179-9959 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-179-9959 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-179-9959. Primary manufacturer part number: 28021.
Features
  • Ring,externally Threaded — FSC 5365
  • Thread Direction: RIGHT-HAND
  • Bore Shape: STRAIGHT
  • Bore Edge Process: ANY ACCEPTABLE
  • Setscrew Locking Notch: NOT INCLUDED
  • Angle Between Accommodations in Deg: 180.0
  • Thread Location: DRIVE END
  • Radius From Geometric Axis to Accommodation: 1.875 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Comp 1117 construction
General Description

The Ring,externally Threaded, cataloged under National Stock Number 5365-01-179-9959, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc.. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5365-01-179-9959
Primary Part Number28021
Item NameRing,externally Threaded
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerHampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc.
StatusCANCELLED
Thread DirectionRIGHT-HAND
Bore ShapeSTRAIGHT
Bore Edge ProcessANY ACCEPTABLE
Setscrew Locking NotchNOT INCLUDED
Angle Between Accommodations in Deg180.0
Thread LocationDRIVE END
Radius From Geometric Axis to Accommodation1.875 INCHES NOMINAL IN
Accommodation Type and Quantity2 HOLES
Bore Annular Internal SerrationNOT INCLUDED
Beveled ThreadINCLUDED
MaterialSTEEL COMP 1117
Casehardening IndicatorNOT CASEHARDENED
Diameter0.250 INCHES NOMINAL IN
Depth0.380 INCHES NOMINAL IN
Screw Thread Series DesignatorUN
Thread Size4.250-12
Drive TypeDRILLED FACE
Bore Diameter2.531 INCHES NOMINAL IN
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5910-00-137-870928021 INTERCHANGEABLE
Capacitor,variable,ceramic Diele
Thales Defense & Security Inc Dba Thales Communications Inc
2520-00-630-014849417HA INTERCHANGEABLE
Spacer,pinion Beari
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
5930-00-925-077310122493 INTERCHANGEABLE
Switch,thermostatic
Us Army Aviation and Missile Command
2910-00-962-584728021-0 INTERCHANGEABLE
Filter Element,fluid
Rtx Corporation Div Pratt & Whitney
5950-01-011-1225 INTERCHANGEABLE
Coil,radio Frequency
Cross-Reference Index
Part NumberManufacturer
28021 PRIMARY Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc. (USA)
Related Parts
5910-00-137-8709INTERCHANGEABLE
CAPACITOR,VARIABLE,CERAMIC DIELE
28021
2520-00-630-0148INTERCHANGEABLE
SPACER,PINION BEARI
49417HA
5930-00-925-0773INTERCHANGEABLE
SWITCH,THERMOSTATIC
10122493
2910-00-962-5847INTERCHANGEABLE
FILTER ELEMENT,FLUID
28021-0
5950-01-011-1225INTERCHANGEABLE
COIL,RADIO FREQUENCY

Frequently Asked Questions

What is NSN 5365-01-179-9959?

NSN 5365-01-179-9959 is a Ring,externally Threaded, manufactured by Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc., classified under FSC 5365 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5365-01-179-9959?

NSN 5365-01-179-9959 has 1 cross-referenced part number: 28021 (Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc.).

What NSN replaces 5365-01-179-9959?

There are 5 known substitutes for 5365-01-179-9959: 5910-00-137-8709, 2520-00-630-0148, 5930-00-925-0773 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28021?

Key specifications for 28021: Thread Direction: RIGHT-HAND; Overall Length: 0.750 INCHES NOMINAL IN; Bore Shape: STRAIGHT; Bore Edge Process: ANY ACCEPTABLE. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5365-01-179-9959 still in active supply?

NSN 5365-01-179-9959 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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