PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

494489Bolt,machine

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5306-00-943-2413 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-943-2413 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-943-2413. Primary manufacturer part number: 494489.
Features
  • Bolt,machine — FSC 5306
  • Head Height: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
  • Thread Length: 0.450 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
  • Extended Washer Diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
  • Surface Finish: 32.0 MICROINCHES THREADS
  • Thread Quantity Per Inch: 24
  • Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
  • Features Provided: FINISHED HEAD
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-943-2413, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-943-2413
Primary Part Number494489
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Head Height0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Thread Length0.450 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
Extended Washer Diameter0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Surface Finish32.0 MICROINCHES THREADS
Thread Quantity Per Inch24
Hardness Rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
Features ProvidedFINISHED HEAD
Thread Class3A A
Head StyleDOUBLE HEXAGON W/HOLE
Fastener Length2.350 INCHES MINIMUM AND 2.370 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Shank Unthreaded Hole Diameter0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN
Width Between Flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF)
Nominal Thread Diameter0.312 INCHES IN
MaterialSTEEL CORROSION RESISTING OVERALL
Surface Finish63.0 MICROINCHES BEARING SURFACE OF HEAD
Surface Finish63.0 MICROINCHES GRIP
Distance From Head Largest Bearing Surface to Shank Hole Center2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM FIRST HOLE IN
Grip Length1.880 INCHES MINIMUM AND 1.900 INCHES MAXIMUM IN
Material Document and ClassificationAMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Extended Washer Thickness0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4820-01-735-503232114 INTERCHANGEABLE
Retainer,seat,valve
Flowserve Inc
5330-01-735-504055460 INTERCHANGEABLE
Gasket and Preformed Packing Set
Flowserve Inc
Cross-Reference Index
Part NumberManufacturer
494489 Sps Technologies, Llc Dba PB Fasteners (USA)
494489 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
494489 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
494489 Howmet Global Fastening Systems Inc Div Torrance Operations (USA)
Related Parts
4820-01-735-5032INTERCHANGEABLE
RETAINER,SEAT,VALVE
32114
5330-01-735-5040INTERCHANGEABLE
GASKET AND PREFORMED PACKING SET
55460

Frequently Asked Questions

What is NSN 5306-00-943-2413?

NSN 5306-00-943-2413 is a Bolt,machine, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-943-2413?

NSN 5306-00-943-2413 has 4 cross-referenced part numbers: 494489 (Sps Technologies, Llc Dba PB Fasteners), 494489 (Turbo Power & Marine System Inc Sub of United Technologies Corp), 494489 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 494489 (Howmet Global Fastening Systems Inc Div Torrance Operations).

What NSN replaces 5306-00-943-2413?

There are 2 known substitutes for 5306-00-943-2413: 4820-01-735-5032, 5330-01-735-5040. Verify interchangeability with system specifications before substitution.

What are the specifications of 494489?

Key specifications for 494489: Head Height: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Thread Length: 0.450 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN; Extended Washer Diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Surface Finish: 32.0 MICROINCHES THREADS. 22 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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