PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18K4-2Bolt,machine

Hydraulic Industries Inc Sub of Sundstrand Corp · NSN 5306-00-606-9883 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-606-9883 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-606-9883. Primary manufacturer part number: 18K4-2.
Features
  • Bolt,machine — FSC 5306
  • Material Document and Classification: SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Direction: RIGHT-HAND
  • Features Provided: FINISHED HEAD
  • Thread Quantity Per Inch: 20
  • Thread Length: 0.619 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
  • Head Height: 0.260 INCHES MAXIMUM 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 5306-00-606-9883, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hydraulic Industries Inc Sub of Sundstrand Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-606-9883
Primary Part Number18K4-2
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerHydraulic Industries Inc Sub of Sundstrand Corp
StatusACTIVE
Material Document and ClassificationSAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread DirectionRIGHT-HAND
Features ProvidedFINISHED HEAD
Thread Quantity Per Inch20
Thread Length0.619 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Head Height0.260 INCHES MAXIMUM IN
Extended Washer Diameter0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Head StyleDOUBLE HEXAGON EXTENDED WASHER
Fastener Length0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Width Between Flats0.247 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Thread Class2A A
Nominal Thread Diameter0.250 INCHES IN
Extended Washer Thickness0.070 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
6115-00-235-8679 INTERCHANGEABLE
Generator Set,diesel Engine
4820-00-287-40871664 INTERCHANGEABLE
Valve,safety Relief
Ashcroft Inc Dba Heise
5965-00-338-4259G3592-2 INTERCHANGEABLE
Handset Headset Subassembly
Telephone Company of America Incorporated
5985-00-407-5314 INTERCHANGEABLE
Antenna
5950-00-645-19261664 INTERCHANGEABLE
Transformer,audio Frequency
Magnetek Inc Lighting Products Group
4820-00-821-9001 INTERCHANGEABLE
Valve,safety Relief
4820-00-878-335648A3-8-110 INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
7110-01-030-72181664 INTERCHANGEABLE
Filing Cabinet
Tab Products Co. Llc Dba Tab Products Co Llc
6520-01-120-26561-664 INTERCHANGEABLE
Impression Tray,dental
Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia
2940-01-261-41011664 INTERCHANGEABLE
Filter Body,fluid
Napa Automotive Parts Co
Cross-Reference Index
Part NumberManufacturer
18K4-2 Hydraulic Industries Inc Sub of Sundstrand Corp (USA)
166-4 Cnh Industrial America Llc Dba Cnh America (USA)
Related Parts
6115-00-235-8679INTERCHANGEABLE
GENERATOR SET,DIESEL ENGINE
4820-00-287-4087INTERCHANGEABLE
VALVE,SAFETY RELIEF
1664
5965-00-338-4259INTERCHANGEABLE
HANDSET HEADSET SUBASSEMBLY
G3592-2
5985-00-407-5314INTERCHANGEABLE
ANTENNA
5950-00-645-1926INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
1664
4820-00-821-9001INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-00-878-3356INTERCHANGEABLE
VALVE,SAFETY RELIEF
48A3-8-110
7110-01-030-7218INTERCHANGEABLE
FILING CABINET
1664
6520-01-120-2656INTERCHANGEABLE
IMPRESSION TRAY,DENTAL
1-664
2940-01-261-4101INTERCHANGEABLE
FILTER BODY,FLUID
1664
6545-01-512-7273INTERCHANGEABLE
CASE,MEDICAL INSTRUMENT AND SUPP
1664

Frequently Asked Questions

What is NSN 5306-00-606-9883?

NSN 5306-00-606-9883 is a Bolt,machine, manufactured by Hydraulic Industries Inc Sub of Sundstrand Corp, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-606-9883?

NSN 5306-00-606-9883 has 2 cross-referenced part numbers: 18K4-2 (Hydraulic Industries Inc Sub of Sundstrand Corp), 166-4 (Cnh Industrial America Llc Dba Cnh America).

What NSN replaces 5306-00-606-9883?

There are 11 known substitutes for 5306-00-606-9883: 6115-00-235-8679, 4820-00-287-4087, 5965-00-338-4259 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18K4-2?

Key specifications for 18K4-2: Material Document and Classification: SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Features Provided: FINISHED HEAD. 15 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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