PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

490120Screw,machine

Turbo Power & Marine System Inc Sub of United Technologies Corp · NSN 5305-00-941-3784 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-941-3784 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-941-3784. Primary manufacturer part number: 490120.
Features
  • Screw,machine — FSC 5305
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Thread Quantity Per Inch: 28
  • Fastener Length: 0.453 INCHES NOMINAL IN
  • Screw Material Document and Classification: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE
  • Screw Surface Treatment: CADMIUM
  • Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
  • Screw Material: STEEL COMP 8740
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-941-3784, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Turbo Power & Marine System Inc Sub of United Technologies Corp. Government technical data includes 15 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-941-3784
Primary Part Number490120
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerTurbo Power & Marine System Inc Sub of United Technologies Corp
StatusACTIVE
Nominal Thread Diameter0.250 INCHES IN
Thread Quantity Per Inch28
Fastener Length0.453 INCHES NOMINAL IN
Screw Material Document and ClassificationAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE
Screw Surface TreatmentCADMIUM
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Screw MaterialSTEEL COMP 8740
Internal Drive StyleSLOT
Countersink Angle82.0 DEGREES NOMINAL
Head StyleFLAT COUNTERSUNK
Thread Length0.453 INCHES MINIMUM IN
Thread Class3A A
Head Diameter0.462 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF)
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5355-00-097-9576 INTERCHANGEABLE
Dial,scale
5330-00-286-68150049490 INTERCHANGEABLE
Seal,plain Encased
New Holland Construction
4730-01-190-1001 INTERCHANGEABLE
Coupling,pipe
5306-01-509-55804901-20 INTERCHANGEABLE
Bolt,machine
Stewart & Stevenson Power Products Llc
Cross-Reference Index
Part NumberManufacturer
490120 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
490120 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
490120 Howmet Global Fastening Systems Inc Div Torrance Operations (USA)
490120 Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA)
490120 Mercury Aerospace Fasteners Inc (USA)
Related Parts
5355-00-097-9576INTERCHANGEABLE
DIAL,SCALE
5330-00-286-6815INTERCHANGEABLE
SEAL,PLAIN ENCASED
0049490
4730-01-190-1001INTERCHANGEABLE
COUPLING,PIPE
5306-01-509-5580INTERCHANGEABLE
BOLT,MACHINE
4901-20

Frequently Asked Questions

What is NSN 5305-00-941-3784?

NSN 5305-00-941-3784 is a Screw,machine, manufactured by Turbo Power & Marine System Inc Sub of United Technologies Corp, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-941-3784?

NSN 5305-00-941-3784 has 5 cross-referenced part numbers: 490120 (Turbo Power & Marine System Inc Sub of United Technologies Corp), 490120 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 490120 (Howmet Global Fastening Systems Inc Div Torrance Operations), 490120 (Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana), 490120 (Mercury Aerospace Fasteners Inc).

What NSN replaces 5305-00-941-3784?

There are 4 known substitutes for 5305-00-941-3784: 5355-00-097-9576, 5330-00-286-6815, 4730-01-190-1001 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 490120?

Key specifications for 490120: Nominal Thread Diameter: 0.250 INCHES IN; Thread Quantity Per Inch: 28; Fastener Length: 0.453 INCHES NOMINAL IN; Screw Material Document and Classification: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE. 15 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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