PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21589Standoff,threaded,spacing

Hamilton Sundstrand Corporation Dba Collins Aerospace · NSN 5340-00-903-2816 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-903-2816 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-903-2816. Primary manufacturer part number: 21589.
Features
  • Standoff,threaded,spacing — FSC 5340
  • Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS
  • Cross-Sectional Shape: ROUND
  • Diameter: 0.312 INCHES NOMINAL IN
  • Length: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
  • 2 verified cross-references
  • Primary manufacturer: Hamilton Sundstrand Corporation Dba Collins Aerospace
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-903-2816, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 4 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-903-2816
Primary Part Number21589
Item NameStandoff,threaded,spacing
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation Dba Collins Aerospace
StatusACTIVE
Style DesignatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
Cross-Sectional ShapeROUND
Diameter0.312 INCHES NOMINAL IN
Length0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 2
5977-00-970-702721589 INTERCHANGEABLE
Cap,brush
Industrial Technologies and Services Llc
4820-01-326-598121589 INTERCHANGEABLE
Piston,valve
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
21589 United Technologies Corp Hamilton Sundstrand Corp (USA)
21589 PRIMARY Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
Related Parts
5977-00-970-7027INTERCHANGEABLE
CAP,BRUSH
21589
4820-01-326-5981INTERCHANGEABLE
PISTON,VALVE
21589

Frequently Asked Questions

What is NSN 5340-00-903-2816?

NSN 5340-00-903-2816 is a Standoff,threaded,spacing, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-903-2816?

NSN 5340-00-903-2816 has 2 cross-referenced part numbers: 21589 (United Technologies Corp Hamilton Sundstrand Corp), 21589 (Hamilton Sundstrand Corporation Dba Collins Aerospace).

What NSN replaces 5340-00-903-2816?

There are 2 known substitutes for 5340-00-903-2816: 5977-00-970-7027, 4820-01-326-5981. Verify interchangeability with system specifications before substitution.

What are the specifications of 21589?

Key specifications for 21589: Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS; Cross-Sectional Shape: ROUND; Diameter: 0.312 INCHES NOMINAL IN; Length: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com