PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40221Screw,machine

Acco-Babcock Inc Hoist and Crane Div · NSN 5305-00-840-6211 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-840-6211 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-840-6211. Primary manufacturer part number: 40221.
Features
  • Screw,machine — FSC 5305
  • Thread Quantity Per Inch: 20
  • Internal Drive Style: CROSS RECESS TYPE 1
  • Head Diameter: 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
  • Thread Length: 0.750 INCHES MINIMUM IN
  • Thread Direction: RIGHT-HAND
  • Screw Material: STEEL COMP 1117
  • Head Height: 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-840-6211, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Acco-Babcock Inc Hoist and Crane Div. Government technical data includes 13 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-840-6211
Primary Part Number40221
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerAcco-Babcock Inc Hoist and Crane Div
StatusACTIVE
Thread Quantity Per Inch20
Internal Drive StyleCROSS RECESS TYPE 1
Head Diameter0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
Thread Length0.750 INCHES MINIMUM IN
Thread DirectionRIGHT-HAND
Screw MaterialSTEEL COMP 1117
Head Height0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
Fastener Length2.000 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head StyleFILLISTER
Nominal Thread Diameter0.250 INCHES IN
Screw Surface TreatmentCADMIUM AND CHROMATE
Thread Class2A A
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
5962-01-225-674940221 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
5310-01-306-505540221 INTERCHANGEABLE
Washer,spring Tension
Bell Intl Inc
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 Acco-Babcock Inc Hoist and Crane Div (USA)
40221ADX Airdale Express Llc Div Airdale Express (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
5962-01-225-6749INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
40221
5310-01-306-5055INTERCHANGEABLE
WASHER,SPRING TENSION
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 5305-00-840-6211?

NSN 5305-00-840-6211 is a Screw,machine, manufactured by Acco-Babcock Inc Hoist and Crane Div, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-840-6211?

NSN 5305-00-840-6211 has 2 cross-referenced part numbers: 40221 (Acco-Babcock Inc Hoist and Crane Div), 40221ADX (Airdale Express Llc Div Airdale Express).

What NSN replaces 5305-00-840-6211?

There are 9 known substitutes for 5305-00-840-6211: 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: Thread Quantity Per Inch: 20; Internal Drive Style: CROSS RECESS TYPE 1; Head Diameter: 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN; Thread Length: 0.750 INCHES MINIMUM IN. 13 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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