PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S1608Bolt,machine

Caterpillar Inc Div Caterpillar Defense · NSN 5306-00-814-6565 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-814-6565 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-814-6565. Primary manufacturer part number: S1608.
Features
  • Bolt,machine — FSC 5306
  • Width Between Flats: 0.563 INCHES NOMINAL IN
  • Thread Length: 1.250 INCHES MINIMUM IN
  • Features Provided: FINISHED HEAD
  • Thread Quantity Per Inch: 16
  • Grip Length: 2.500 INCHES NOMINAL IN
  • Nominal Thread Diameter: 0.375 INCHES IN
  • Fastener Length: 3.750 INCHES NOMINAL IN
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 5306-00-814-6565, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-814-6565
Primary Part NumberS1608
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Width Between Flats0.563 INCHES NOMINAL IN
Thread Length1.250 INCHES MINIMUM IN
Features ProvidedFINISHED HEAD
Thread Quantity Per Inch16
Grip Length2.500 INCHES NOMINAL IN
Nominal Thread Diameter0.375 INCHES IN
Fastener Length3.750 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
MaterialSTEEL OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head StyleHEXAGON
Thread Class2A A
Head Height0.243 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5325-00-174-9038 INTERCHANGEABLE
Grommet,nonmetallic
5360-00-786-3963213-7-2 INTERCHANGEABLE
Spring,leaf
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
3040-01-191-782921372 INTERCHANGEABLE
Head,linear Actuating Cylinder
Moog Inc. Dba Ampac-Isp Corp
4720-01-242-148621372 INTERCHANGEABLE
Hose,preformed
Gates Corporation
4820-01-513-950321372-001 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
S1608 Caterpillar (uk) Ltd (GBR)
21372 Dresser, Llc (USA)
S1608 Westrac Pty Ltd (AUS)
S1608 Hastings Deering (aust) Pty Ltd (AUS)
0S1608 Caterpillar Inc Div Caterpillar Defense (USA)
S1608 William Adams Pty Ltd (AUS)
S1608 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
17KP361 Oshkosh Defense Llc (USA)
Related Parts
5325-00-174-9038INTERCHANGEABLE
GROMMET,NONMETALLIC
5360-00-786-3963INTERCHANGEABLE
SPRING,LEAF
213-7-2
3040-01-191-7829INTERCHANGEABLE
HEAD,LINEAR ACTUATING CYLINDER
21372
4720-01-242-1486INTERCHANGEABLE
HOSE,PREFORMED
21372
4820-01-513-9503INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21372-001

Frequently Asked Questions

What is NSN 5306-00-814-6565?

NSN 5306-00-814-6565 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 5306-00-814-6565?

NSN 5306-00-814-6565 has 8 cross-referenced part numbers: S1608 (Caterpillar (uk) Ltd), 21372 (Dresser, Llc), S1608 (Westrac Pty Ltd), S1608 (Hastings Deering (aust) Pty Ltd), 0S1608 (Caterpillar Inc Div Caterpillar Defense) and 3 more.

What NSN replaces 5306-00-814-6565?

There are 5 known substitutes for 5306-00-814-6565: 5325-00-174-9038, 5360-00-786-3963, 3040-01-191-7829 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S1608?

Key specifications for S1608: Width Between Flats: 0.563 INCHES NOMINAL IN; Thread Length: 1.250 INCHES MINIMUM IN; Features Provided: FINISHED HEAD; Thread Quantity Per Inch: 16. 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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