PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40221Washer,spring Tension

Bell Intl Inc · NSN 5310-01-306-5055 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-306-5055 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-306-5055. Primary manufacturer part number: 40221.
Features
  • Washer,spring Tension — FSC 5310
  • Purchase Description Identification: 1U601-40221
  • 1 verified cross-reference
  • Primary manufacturer: Bell Intl Inc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Mechanical energy storage
  • Vibration dampening
General Description

The Washer,spring Tension, cataloged under National Stock Number 5310-01-306-5055, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bell Intl Inc. Government technical data includes 1 verified specification, 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-306-5055
Primary Part Number40221
Item NameWasher,spring Tension
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBell Intl Inc
StatusACTIVE
Purchase Description Identification1U601-40221
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3455-00-230-7026305-24 INTERCHANGEABLE
Cutter,milling,side
Kennametal Inc. Div Kennametal Industrial Products Group
5930-00-273-0778TH3221 INTERCHANGEABLE
Switch,box
General Electric Co Electrical Distribution and Control
5330-00-291-6371162G12 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5999-00-417-041340-221 INTERCHANGEABLE
Contact,electrical
Eaton Corp Opns & Technical Center
5305-00-840-6211 INTERCHANGEABLE
Screw,machine
5962-01-225-674940221 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
6530-01-472-3863402-21 INTERCHANGEABLE
Coupler,litter,sea-
Lifesaving Systems Llc
2910-01-539-719740221 INTERCHANGEABLE
Pump,fuel,metering and Distribut
Hdt Expeditionary Systems Inc
6680-01-550-810540221/61-999-000 INTERCHANGEABLE
Indicator,sight,liquid
Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque
Cross-Reference Index
Part NumberManufacturer
40221 PRIMARY Bell Intl Inc (USA)
Related Parts
3455-00-230-7026INTERCHANGEABLE
CUTTER,MILLING,SIDE
305-24
5930-00-273-0778INTERCHANGEABLE
SWITCH,BOX
TH3221
5330-00-291-6371INTERCHANGEABLE
SEAL,PLAIN ENCASED
162G12
5999-00-417-0413INTERCHANGEABLE
CONTACT,ELECTRICAL
40-221
5305-00-840-6211INTERCHANGEABLE
SCREW,MACHINE
5962-01-225-6749INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
40221
6530-01-472-3863INTERCHANGEABLE
COUPLER,LITTER,SEA-
402-21
2910-01-539-7197INTERCHANGEABLE
PUMP,FUEL,METERING AND DISTRIBUT
40221
6680-01-550-8105INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
40221/61-999-000

Frequently Asked Questions

What is NSN 5310-01-306-5055?

NSN 5310-01-306-5055 is a Washer,spring Tension, manufactured by Bell Intl Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-306-5055?

NSN 5310-01-306-5055 has 1 cross-referenced part number: 40221 (Bell Intl Inc).

What NSN replaces 5310-01-306-5055?

There are 9 known substitutes for 5310-01-306-5055: 3455-00-230-7026, 5930-00-273-0778, 5330-00-291-6371 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40221?

Key specifications for 40221: Purchase Description Identification: 1U601-40221; Special Features: REPAIR PART FOR DENTAL ENGINE,LABORATORY,MDL. 40-L,NSN 6520-01-147-4654. 2 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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