PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1AX59Screw,cap,hexagon Head

Mack Trucks Inc Parts Opn · NSN 5305-00-018-1705 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-018-1705 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-018-1705. Primary manufacturer part number: 1AX59.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Quantity Per Inch: 20
  • Thread Length: 1.250 INCHES MINIMUM IN
  • Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
  • Material: STEEL OVERALL
  • Thread Class: 2A A
  • Head Height: 0.312 INCHES NOMINAL IN
  • Surface Treatment: CADMIUM OVERALL
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 5305-00-018-1705, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mack Trucks Inc Parts Opn. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-018-1705
Primary Part Number1AX59
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMack Trucks Inc Parts Opn
StatusCANCELLED
Thread Quantity Per Inch20
Thread Length1.250 INCHES MINIMUM IN
Hardness Rating23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
MaterialSTEEL OVERALL
Thread Class2A A
Head Height0.312 INCHES NOMINAL IN
Surface TreatmentCADMIUM OVERALL
Fastener Length2.000 INCHES NOMINAL IN
Head StyleHEXAGON
Thread Series DesignatorUNF
Thread DirectionRIGHT-HAND
Nondefinitive Spec/std Data5 GRADE AND 10P STYLE AND 2 TYPE
Minimum Tensile Strength120000 POUNDS PER SQUARE INCH LBS
Nominal Thread Diameter0.500 INCHES IN
Width Between Flats0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5961-00-807-7835 INTERCHANGEABLE
Semiconductor Device,diode
5130-01-400-0133 INTERCHANGEABLE
Socket,socket Wrench
4730-01-447-619318-1705 INTERCHANGEABLE
Reducer,pipe
Ftg Inc
Cross-Reference Index
Part NumberManufacturer
1AX59 Mack Trucks Inc Parts Opn (USA)
NASM90726 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
181705 General Motors Corp (USA)
FFS85TYPE2STYLE10PGRADE5 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
25092070 Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales (AUS)
1AX59 Cmv Truck and Bus Pty Ltd (AUS)
1AX59 Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales (AUS)
181705 Army Weapons Command Attn Amswe-Ree-S (USA)
MS35298-115 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
1AX 59 Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations (USA)
K-500-CH-1932 Kovatch Corp. (USA)
Related Parts
5961-00-807-7835INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5130-01-400-0133INTERCHANGEABLE
SOCKET,SOCKET WRENCH
4730-01-447-6193INTERCHANGEABLE
REDUCER,PIPE
18-1705

Frequently Asked Questions

What is NSN 5305-00-018-1705?

NSN 5305-00-018-1705 is a Screw,cap,hexagon Head, manufactured by Mack Trucks Inc Parts Opn, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-018-1705?

NSN 5305-00-018-1705 has 11 cross-referenced part numbers: 1AX59 (Mack Trucks Inc Parts Opn), NASM90726 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 181705 (General Motors Corp), FFS85TYPE2STYLE10PGRADE5 (Federal Specifications Promulgated by General Services Administration Washington DC), 25092070 (Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales) and 6 more.

What NSN replaces 5305-00-018-1705?

There are 3 known substitutes for 5305-00-018-1705: 5961-00-807-7835, 5130-01-400-0133, 4730-01-447-6193. Verify interchangeability with system specifications before substitution.

What are the specifications of 1AX59?

Key specifications for 1AX59: Thread Quantity Per Inch: 20; Thread Length: 1.250 INCHES MINIMUM IN; Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL; Material: STEEL OVERALL. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-018-1705 still in active supply?

NSN 5305-00-018-1705 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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