PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

566D499PC6Screw,cap,socket Head

Bechtel Technical Services Inc Machinery Apparatus Opn · NSN 5305-01-448-6474 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-448-6474 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-448-6474. Primary manufacturer part number: 566D499PC6.
Features
  • Screw,cap,socket Head — FSC 5305
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
  • Criticality Code Justification: ZZZY
  • 3 verified cross-references
  • Primary manufacturer: Bechtel Technical Services Inc Machinery Apparatus Opn
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-448-6474, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bechtel Technical Services Inc Machinery Apparatus Opn. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-448-6474
Primary Part Number566D499PC6
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerBechtel Technical Services Inc Machinery Apparatus Opn
StatusACTIVE
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-155-3367NAS1352-6-16 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
566D499PC6 Bechtel Technical Services Inc Machinery Apparatus Opn (USA)
566D499P6 Bechtel Technical Services Inc Machinery Apparatus Opn (USA)
91251A624 Mcmaster-Carr Supply Co (USA)
Related Parts
5305-00-155-3367INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
NAS1352-6-16

Frequently Asked Questions

What is NSN 5305-01-448-6474?

NSN 5305-01-448-6474 is a Screw,cap,socket Head, manufactured by Bechtel Technical Services Inc Machinery Apparatus Opn, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-448-6474?

NSN 5305-01-448-6474 has 3 cross-referenced part numbers: 566D499PC6 (Bechtel Technical Services Inc Machinery Apparatus Opn), 566D499P6 (Bechtel Technical Services Inc Machinery Apparatus Opn), 91251A624 (Mcmaster-Carr Supply Co).

What NSN replaces 5305-01-448-6474?

There is 1 known substitute for 5305-01-448-6474: 5305-00-155-3367. Verify interchangeability with system specifications before substitution.

What are the specifications of 566D499PC6?

Key specifications for 566D499PC6: Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS; Criticality Code Justification: ZZZY. 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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