PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

186612Screw,cap,hexagon Head

General Motors Corp · NSN 5305-00-018-6612 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-018-6612 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-018-6612. Primary manufacturer part number: 186612.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Head Height: 0.234 INCHES NOMINAL IN
  • Minimum Yield Strength: 120000 POUNDS PER SQUARE INCH LBS
  • Nondefinitive Spec/std Data: 2 TYPE AND 10P STYLE AND 8 GRADE
  • Material: STEEL OVERALL
  • Departure From Cited Designator: AS MODIFIED BY LENGTH
  • Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
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 5305-00-018-6612, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Corp. Government technical data includes 15 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-018-6612
Primary Part Number186612
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusCANCELLED
Head Height0.234 INCHES NOMINAL IN
Minimum Yield Strength120000 POUNDS PER SQUARE INCH LBS
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE AND 8 GRADE
MaterialSTEEL OVERALL
Departure From Cited DesignatorAS MODIFIED BY LENGTH
Hardness Rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Fastener Length1.375 INCHES NOMINAL IN
Thread Class2A A
Thread Quantity Per Inch16
Thread DirectionRIGHT-HAND
Nominal Thread Diameter0.375 INCHES IN
Head StyleHEXAGON
Thread Length1.000 INCHES MAXIMUM IN
Width Between Flats0.562 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5331-00-194-3724 INTERCHANGEABLE
O-Ring
5360-00-518-5913186612 INTERCHANGEABLE
Spring
Lake Shore Systems, Inc.
5305-00-688-2111AES01C375A37AW9A91 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
5975-01-475-2170 INTERCHANGEABLE
Cover,junction Box
Cross-Reference Index
Part NumberManufacturer
186612 General Motors Corp (USA)
186612 General Motors Llc Dba General Motors Llc (USA)
186612 Terex Equipment Ltd Div Construction Equipment (GBR)
FFS85TYPE2STYLE10PGRADE8 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5331-00-194-3724INTERCHANGEABLE
O-RING
5360-00-518-5913INTERCHANGEABLE
SPRING
186612
5305-00-688-2111INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES01C375A37AW9A91
5975-01-475-2170INTERCHANGEABLE
COVER,JUNCTION BOX

Frequently Asked Questions

What is NSN 5305-00-018-6612?

NSN 5305-00-018-6612 is a Screw,cap,hexagon Head, manufactured by General Motors Corp, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-018-6612?

NSN 5305-00-018-6612 has 4 cross-referenced part numbers: 186612 (General Motors Corp), 186612 (General Motors Llc Dba General Motors Llc), 186612 (Terex Equipment Ltd Div Construction Equipment), FFS85TYPE2STYLE10PGRADE8 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-00-018-6612?

There are 4 known substitutes for 5305-00-018-6612: 5331-00-194-3724, 5360-00-518-5913, 5305-00-688-2111 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 186612?

Key specifications for 186612: Head Height: 0.234 INCHES NOMINAL IN; Minimum Yield Strength: 120000 POUNDS PER SQUARE INCH LBS; Nondefinitive Spec/std Data: 2 TYPE AND 10P STYLE AND 8 GRADE; Material: STEEL OVERALL. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-018-6612 still in active supply?

NSN 5305-00-018-6612 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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