PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S1614Bolt,machine

Caterpillar Inc Div Caterpillar Defense · NSN 5306-00-423-8121 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-423-8121 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-423-8121. Primary manufacturer part number: S1614.
Features
  • Bolt,machine — FSC 5306
  • Thread Direction: RIGHT-HAND
  • Head Style: HEXAGON
  • Thread Length: 0.500 INCHES MAXIMUM IN
  • Fastener Length: 0.500 INCHES NOMINAL IN
  • Hardness Rating: 30.0 ROCKWELL C NOMINAL OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Class: 2A A
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-423-8121, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 14 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-423-8121
Primary Part NumberS1614
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Thread DirectionRIGHT-HAND
Head StyleHEXAGON
Thread Length0.500 INCHES MAXIMUM IN
Fastener Length0.500 INCHES NOMINAL IN
Hardness Rating30.0 ROCKWELL C NOMINAL OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Class2A A
Nominal Thread Diameter0.250 INCHES IN
MaterialSTEEL OVERALL
Head Height0.188 INCHES NOMINAL IN
Minimum Yield Strength145000 POUNDS PER SQUARE INCH LBS
Width Between Flats0.438 INCHES NOMINAL IN
Features ProvidedFINISHED HEAD
Thread Quantity Per Inch20
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5305-00-018-1377 INTERCHANGEABLE
Screw,cap,hexagon Head
2805-00-554-641980171HC INTERCHANGEABLE
Valve,poppet,engine
Navistar Intl Corp Truck Br Ohio Plant
5910-00-908-0347EP34908 INTERCHANGEABLE
Capacitor,fixed,plastic Dielectr
Electron Products Inc
4820-00-961-808532211PC4 INTERCHANGEABLE
Seat,valve
Crane Co Div Valve Div
5305-01-210-62231049981 INTERCHANGEABLE
Thumbscrew
Todd Combustion Inc
6675-01-229-1246M276 INTERCHANGEABLE
Protractor,semicircular
C-Thru Ruler Co
Cross-Reference Index
Part NumberManufacturer
S1614 Westrac Pty Ltd (AUS)
M276 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
0S-1614 Pon Equipment B.v. (NLD)
0S1614 Caterpillar Inc Div Caterpillar Defense (USA)
S1614 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
S1614 Hastings Deering (aust) Pty Ltd (AUS)
S1614 William Adams Pty Ltd (AUS)
Related Parts
5305-00-018-1377INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
2805-00-554-6419INTERCHANGEABLE
VALVE,POPPET,ENGINE
80171HC
5910-00-908-0347INTERCHANGEABLE
CAPACITOR,FIXED,PLASTIC DIELECTR
EP34908
4820-00-961-8085INTERCHANGEABLE
SEAT,VALVE
32211PC4
5305-01-210-6223INTERCHANGEABLE
THUMBSCREW
1049981
6675-01-229-1246INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR
M276

Frequently Asked Questions

What is NSN 5306-00-423-8121?

NSN 5306-00-423-8121 is a Bolt,machine, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-423-8121?

NSN 5306-00-423-8121 has 7 cross-referenced part numbers: S1614 (Westrac Pty Ltd), M276 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 0S-1614 (Pon Equipment B.v.), 0S1614 (Caterpillar Inc Div Caterpillar Defense), S1614 (Caterpillar Inc Div Caterpillar Defense) and 2 more.

What NSN replaces 5306-00-423-8121?

There are 6 known substitutes for 5306-00-423-8121: 5305-00-018-1377, 2805-00-554-6419, 5910-00-908-0347 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S1614?

Key specifications for S1614: Thread Direction: RIGHT-HAND; Head Style: HEXAGON; Thread Length: 0.500 INCHES MAXIMUM IN; Fastener Length: 0.500 INCHES NOMINAL IN. 14 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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