PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

186689Screw,cap,hexagon Head

Us Army Aviation and Missile Command · NSN 5305-00-285-3883 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-285-3883 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-285-3883. Primary manufacturer part number: 186689.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Class: 2A A
  • Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material: STEEL OVERALL
  • Head Height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.500 INCHES IN
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-285-3883, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-285-3883
Primary Part Number186689
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerUs Army Aviation and Missile Command
StatusCANCELLED
Thread Class2A A
Hardness Rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL OVERALL
Head Height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
Nominal Thread Diameter0.500 INCHES IN
Thread DirectionRIGHT-HAND
Head StyleHEXAGON
Width Between Flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Thread Quantity Per Inch13
Thread Length1.250 INCHES MINIMUM IN
Fastener Length2.000 INCHES NOMINAL IN
Minimum Tensile Strength150000 POUNDS PER SQUARE INCH LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5305-00-071-2071AEB02C500B00AW9A81 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
5998-00-173-27563249514 INTERCHANGEABLE
Circuit Card Assembly
Raytheon Company Dba Raytheon
5307-01-105-9310 INTERCHANGEABLE
Stud,plain
3040-01-301-8068186689 INTERCHANGEABLE
Housing,mechanical Drive
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
Cross-Reference Index
Part NumberManufacturer
186689 Us Army Aviation and Missile Command (USA)
3249514 General Motors Corp (USA)
40070A Hercules Engine Co Inc (USA)
MS35301-115 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
186689 General Motors Corp (USA)
186689 Army Weapons Command Attn Amswe-Ree-S (USA)
186689 Rolls-Royce Solutions America Inc (USA)
Related Parts
5305-00-071-2071INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AEB02C500B00AW9A81
5998-00-173-2756INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
3249514
5307-01-105-9310INTERCHANGEABLE
STUD,PLAIN
3040-01-301-8068INTERCHANGEABLE
HOUSING,MECHANICAL DRIVE
186689

Frequently Asked Questions

What is NSN 5305-00-285-3883?

NSN 5305-00-285-3883 is a Screw,cap,hexagon Head, manufactured by Us Army Aviation and Missile Command, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-285-3883?

NSN 5305-00-285-3883 has 7 cross-referenced part numbers: 186689 (Us Army Aviation and Missile Command), 3249514 (General Motors Corp), 40070A (Hercules Engine Co Inc), MS35301-115 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 186689 (General Motors Corp) and 2 more.

What NSN replaces 5305-00-285-3883?

There are 4 known substitutes for 5305-00-285-3883: 5305-00-071-2071, 5998-00-173-2756, 5307-01-105-9310 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 186689?

Key specifications for 186689: Thread Class: 2A A; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material: STEEL OVERALL. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-285-3883 still in active supply?

NSN 5305-00-285-3883 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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