PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

27541Screw,machine

Fastenal Company Dba Fastenel Co · NSN 5305-01-666-4741 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-666-4741 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-666-4741. Primary manufacturer part number: 27541.
Features
  • Screw,machine — FSC 5305
  • Width Between Flats: 0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.190 INCHES IN
  • Head Height: 0.124 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
  • Fastener Length: 0.3125 INCHES NOMINAL IN
  • Head Style: HEXAGON EXTENDED WASHER
  • Internal Drive Style: SLOT
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-666-4741, 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 Dba Fastenel Co. Government technical data includes 14 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-666-4741
Primary Part Number27541
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenel Co
StatusACTIVE
Width Between Flats0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Nominal Thread Diameter0.190 INCHES IN
Head Height0.124 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
Fastener Length0.3125 INCHES NOMINAL IN
Head StyleHEXAGON EXTENDED WASHER
Internal Drive StyleSLOT
Thread DirectionRIGHT-HAND
Screw MaterialSTEEL
Extended Washer Thickness0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
Extended Washer Diameter0.384 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN
Thread Class2A A
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Length0.3125 INCHES NOMINAL IN
Thread Quantity Per Inch32
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4320-00-310-033727541 INTERCHANGEABLE
Ring,lantern
Dressta North America Ltd
2530-00-383-497344781 INTERCHANGEABLE
Plug
Eaton Aerospace, Llc Dba Jackson South
5330-00-833-8938 INTERCHANGEABLE
Seal,plain Encased
5940-00-945-0293 INTERCHANGEABLE
Terminal,stud
5365-01-004-0612AN 40X12S INTERCHANGEABLE
Ring,tolerance
Rbc Bearings Incorporated Div West Trenton Division
5930-01-199-7434 INTERCHANGEABLE
Arm,switch Actuator
5905-01-256-1503 INTERCHANGEABLE
Resistor,fixed,film
2530-01-270-2354 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
5305-01-548-471727541 INTERCHANGEABLE
Screw,cap,hexagon Head
Eagle Components, Inc
5305-01-580-5518 INTERCHANGEABLE
Screw,cap,hexagon Head
Cross-Reference Index
Part NumberManufacturer
27541 PRIMARY Fastenal Company Dba Fastenel Co (USA)
Related Parts
4320-00-310-0337INTERCHANGEABLE
RING,LANTERN
27541
2530-00-383-4973INTERCHANGEABLE
PLUG
44781
5330-00-833-8938INTERCHANGEABLE
SEAL,PLAIN ENCASED
5940-00-945-0293INTERCHANGEABLE
TERMINAL,STUD
5365-01-004-0612INTERCHANGEABLE
RING,TOLERANCE
AN 40X12S
5930-01-199-7434INTERCHANGEABLE
ARM,SWITCH ACTUATOR
5905-01-256-1503INTERCHANGEABLE
RESISTOR,FIXED,FILM
2530-01-270-2354INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
5305-01-548-4717INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
27541
5305-01-580-5518INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD

Frequently Asked Questions

What is NSN 5305-01-666-4741?

NSN 5305-01-666-4741 is a Screw,machine, manufactured by Fastenal Company Dba Fastenel Co, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-666-4741?

NSN 5305-01-666-4741 has 1 cross-referenced part number: 27541 (Fastenal Company Dba Fastenel Co).

What NSN replaces 5305-01-666-4741?

There are 10 known substitutes for 5305-01-666-4741: 4320-00-310-0337, 2530-00-383-4973, 5330-00-833-8938 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 27541?

Key specifications for 27541: Special Features: THREAD REQ. ASME B1.1, UNC & UNF; Width Between Flats: 0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.190 INCHES IN; Head Height: 0.124 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN. 16 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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