PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

39666Screw,cap,socket Head

Fastenal Company · NSN 5305-01-605-9204 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-605-9204 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-605-9204. Primary manufacturer part number: 39666.
Features
  • Screw,cap,socket Head — FSC 5305
  • Color: BLACK OVERALL
  • Nominal Thread Diameter: 12.0 MILLIMETERS MM
  • Head Style: FLAT FILLISTER
  • Internal Drive Style: HEXAGON
  • Width Across Flats: 10.0 MILLIMETERS NOMINAL MM
  • Thread Direction: RIGHT-HAND
  • Fastener Length: 110.0 MILLIMETERS NOMINAL MM
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-605-9204, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company. Government technical data includes 11 verified specifications, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-605-9204
Primary Part Number39666
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFastenal Company
StatusACTIVE
ColorBLACK OVERALL
Nominal Thread Diameter12.0 MILLIMETERS MM
Head StyleFLAT FILLISTER
Internal Drive StyleHEXAGON
Width Across Flats10.0 MILLIMETERS NOMINAL MM
Thread DirectionRIGHT-HAND
Fastener Length110.0 MILLIMETERS NOMINAL MM
Thread Pitch in Millimeters1.75
Thread Series DesignatorISO M
Surface TreatmentOXIDE OVERALL
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2520-00-495-706815099 INTERCHANGEABLE
Deflector,dirt and Liquid
Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products
5930-01-420-0126FS-200M-SB INTERCHANGEABLE
Switch,flow
Setra Systems, Inc. Dba Gems Sensors
5360-01-484-305039666 INTERCHANGEABLE
Spring,helical,extension
Alliance Laundry Systems Llc
Cross-Reference Index
Part NumberManufacturer
39666 PRIMARY Fastenal Company (USA)
Related Parts
2520-00-495-7068INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
15099
5930-01-420-0126INTERCHANGEABLE
SWITCH,FLOW
FS-200M-SB
5360-01-484-3050INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
39666

Frequently Asked Questions

What is NSN 5305-01-605-9204?

NSN 5305-01-605-9204 is a Screw,cap,socket Head, manufactured by Fastenal Company, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-605-9204?

NSN 5305-01-605-9204 has 1 cross-referenced part number: 39666 (Fastenal Company).

What NSN replaces 5305-01-605-9204?

There are 3 known substitutes for 5305-01-605-9204: 2520-00-495-7068, 5930-01-420-0126, 5360-01-484-3050. Verify interchangeability with system specifications before substitution.

What are the specifications of 39666?

Key specifications for 39666: Color: BLACK OVERALL; Nominal Thread Diameter: 12.0 MILLIMETERS MM; Head Style: FLAT FILLISTER; Special Features: 12.9; COARSE THREADS. 12 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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