PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21222Nut,sleeve

Amphenol Corp Div Amphenol Aerospace Operations · NSN 5310-00-673-8272 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-673-8272 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-673-8272. Primary manufacturer part number: 21222.
Features
  • Nut,sleeve — FSC 5310
  • Thread Series: UNEF
  • Nut Length: 0.295 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • Thread Length: 0.219 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Nut Diameter: 0.312 INCHES NOMINAL IN
  • Nominal Thread Size: 0.250 INCHES IN
  • Nut Style: SLEEVE
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Nut,sleeve, cataloged under National Stock Number 5310-00-673-8272, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Amphenol Corp Div Amphenol Aerospace Operations. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-673-8272
Primary Part Number21222
Item NameNut,sleeve
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAmphenol Corp Div Amphenol Aerospace Operations
StatusACTIVE
Thread SeriesUNEF
Nut Length0.295 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING OVERALL
Thread Length0.219 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Nut Diameter0.312 INCHES NOMINAL IN
Nominal Thread Size0.250 INCHES IN
Nut StyleSLEEVE
Thread Quantity Per Inch32
Thread Class3B
Surface TreatmentPASSIVATE OVERALL
Cross-Sectional ShapeROUND NUT
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5930-00-231-9774 INTERCHANGEABLE
Switch,rotary
5950-00-931-3744 INTERCHANGEABLE
Coil,radio Frequency
5950-01-339-66671M212-2 INTERCHANGEABLE
Transformer,pulse
Northrop Grumman Corp Electronic Systems Defensive System Div
5133-01-443-349121222 INTERCHANGEABLE
Counterbore,machine
Time Fastener Co Inc
2530-01-581-869921222 INTERCHANGEABLE
Hub Assembly,vehicular
Mark Industries
Cross-Reference Index
Part NumberManufacturer
46A5148 Airforce-Navy Aeronautical Design Standard
21222 Mason Electric Co. Dba Mason Controls (USA)
21222 PRIMARY Amphenol Corp Div Amphenol Aerospace Operations (USA)
154-900025-00 Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co (USA)
21222 Unison Industries Llc (USA)
Related Parts
5930-00-231-9774INTERCHANGEABLE
SWITCH,ROTARY
5950-00-931-3744INTERCHANGEABLE
COIL,RADIO FREQUENCY
5950-01-339-6667INTERCHANGEABLE
TRANSFORMER,PULSE
1M212-2
5133-01-443-3491INTERCHANGEABLE
COUNTERBORE,MACHINE
21222
2530-01-581-8699INTERCHANGEABLE
HUB ASSEMBLY,VEHICULAR
21222

Frequently Asked Questions

What is NSN 5310-00-673-8272?

NSN 5310-00-673-8272 is a Nut,sleeve, manufactured by Amphenol Corp Div Amphenol Aerospace Operations, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-673-8272?

NSN 5310-00-673-8272 has 5 cross-referenced part numbers: 46A5148 (Airforce-Navy Aeronautical Design Standard), 21222 (Mason Electric Co. Dba Mason Controls), 21222 (Amphenol Corp Div Amphenol Aerospace Operations), 154-900025-00 (Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co), 21222 (Unison Industries Llc).

What NSN replaces 5310-00-673-8272?

There are 5 known substitutes for 5310-00-673-8272: 5930-00-231-9774, 5950-00-931-3744, 5950-01-339-6667 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21222?

Key specifications for 21222: Thread Series: UNEF; Nut Length: 0.295 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING OVERALL; Thread Length: 0.219 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN. 12 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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