PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-24787/3Adapter,straight,hose to Boss

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-01-166-1081 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-166-1081 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-166-1081. Primary manufacturer part number: MIL-DTL-24787/3.
Features
  • Adapter,straight,hose to Boss — FSC 4730
  • Nominal Outside Diameter Hose Accommodated: 2.750 INCHES FIRST END IN
  • Nondefinitive Spec/std Data: C TYPE AND 1 CLASS
  • Connection Type: THREADED EXTERNAL HOSE GRIPPING FIRST END
  • Thread Pitch Diameters: +0.2016 TO 0.3062 INCHES SECOND END IN
  • Nominal Inside Diameter Hose Accommodated: 2.016 INCHES FIRST END IN
  • Thread Class: 3A SECOND END A
  • Nominal Thread Size: 3.062 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Nickel Alloy Overall construction
General Description

The Adapter,straight,hose to Boss, cataloged under National Stock Number 4730-01-166-1081, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-166-1081
Primary Part NumberMIL-DTL-24787/3
Item NameAdapter,straight,hose to Boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Nominal Outside Diameter Hose Accommodated2.750 INCHES FIRST END IN
Nondefinitive Spec/std DataC TYPE AND 1 CLASS
Connection TypeTHREADED EXTERNAL HOSE GRIPPING FIRST END
Thread Pitch Diameters+0.2016 TO 0.3062 INCHES SECOND END IN
Nominal Inside Diameter Hose Accommodated2.016 INCHES FIRST END IN
Thread Class3A SECOND END A
Nominal Thread Size3.062 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL BOSS SECOND END
Specification/standard Data81349-MIL-H-24135 GOVERNMENT SPECIFICATION
Material Document and ClassificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Furnished Items and Quantity1 HOSE SOCKET
Connection StyleGRIPPING NIPPLE (NOSE) FIRST END
Nominal Overall Length6.000 INCHES IN
Connection StyleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
Thread Quantity Per Inch12 SECOND END
Thread Series DesignatorUNS SECOND END
MaterialNICKEL ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4730-00-177-59664-190909-3/8-8 INTERCHANGEABLE
Adapter,straight,hose to Boss
Hydrasearch Company, Llc
4730-01-119-0557 INTERCHANGEABLE
Adapter,straight,hose to Boss
4730-01-142-9646 INTERCHANGEABLE
Adapter,straight,hose to Boss
4720-01-162-4090FA6390EEE0720AA INTERCHANGEABLE
Hose Assembly,nonmetallic
Hydrasearch Company, Llc
4730-01-198-28014-190909-3/4-16 INTERCHANGEABLE
Adapter,straight,hose to Boss
Danfoss Power Solutions II, Llc
4730-01-233-8996845-4788683 INTERCHANGEABLE
Adapter,straight,tube to Hose
Naval Ship Systems Command
4720-01-319-4335FA7003KKK0153 INTERCHANGEABLE
Hose Assembly,nonmetallic
Danfoss Power Solutions II, Llc
4730-01-334-2014 INTERCHANGEABLE
Adapter,straight,hose to Boss
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-24787/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
845-4788683 Naval Ship Systems Command (USA)
2621-225-04 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
MIL-F-24787/3 GRI TY C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-24787 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-H-24135 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-24787/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
CMC-4-5602-1-1/2-32 Custom Hydraulic & Machine, Inc. Dba Custom Hydraulic & Machine Inc (USA)
Related Parts
4730-00-177-5966INTERCHANGEABLE
ADAPTER,STRAIGHT,HOSE TO BOSS
4-190909-3/8-8
4730-01-119-0557INTERCHANGEABLE
ADAPTER,STRAIGHT,HOSE TO BOSS
4730-01-142-9646INTERCHANGEABLE
ADAPTER,STRAIGHT,HOSE TO BOSS
4720-01-162-4090INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
FA6390EEE0720AA
4730-01-198-2801INTERCHANGEABLE
ADAPTER,STRAIGHT,HOSE TO BOSS
4-190909-3/4-16
4730-01-233-8996INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
845-4788683
4720-01-319-4335INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
FA7003KKK0153
4730-01-334-2014INTERCHANGEABLE
ADAPTER,STRAIGHT,HOSE TO BOSS

Frequently Asked Questions

What is NSN 4730-01-166-1081?

NSN 4730-01-166-1081 is a Adapter,straight,hose to Boss, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-166-1081?

NSN 4730-01-166-1081 has 8 cross-referenced part numbers: MIL-DTL-24787/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 845-4788683 (Naval Ship Systems Command), 2621-225-04 (Electric Boat Corporation Div General Dynamics Electric Boat), MIL-F-24787/3 GRI TY C (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-F-24787 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.

What NSN replaces 4730-01-166-1081?

There are 8 known substitutes for 4730-01-166-1081: 4730-00-177-5966, 4730-01-119-0557, 4730-01-142-9646 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-24787/3?

Key specifications for MIL-DTL-24787/3: Nominal Outside Diameter Hose Accommodated: 2.750 INCHES FIRST END IN; Nondefinitive Spec/std Data: C TYPE AND 1 CLASS; Connection Type: THREADED EXTERNAL HOSE GRIPPING FIRST END; Thread Pitch Diameters: +0.2016 TO 0.3062 INCHES SECOND END IN. 17 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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