PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1850-8704-7Extension,screw

Wheeler Fleet Solutions, Co. · NSN 1730-01-042-4720 · FSC 1730 · No Item Name Available
Verified by PartsTable
NSN 1730-01-042-4720 — this item is cataloged by the U.S. Government under National Stock Number 1730-01-042-4720. Primary manufacturer part number: 1850-8704-7.
Features
  • Extension,screw — FSC 1730
  • General Characteristics Item Description: MATERIAL-4142 HOT ROLLED HIGH TENSTRENGTH STEEL 6.750 IN. LONG BY 2 IN. DIAMETER,MATERIAL SPECS-PHOSPHATE COAT PER MIL-C-16232,TYPE 1,FINISHED DIMENSIONS-6.500 LONG WITH 0.062 IN. BY 45 DEGREE CHAMFER ON THREAD END-KNURL 0.375 LONG FULL CURCUMFERENCE BY 2.00 IN. DIAMETER ON UNTHREADED END-G-184 THREAD 5.875 LONG IN
  • 5 verified cross-references
  • Primary manufacturer: Wheeler Fleet Solutions, Co.
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Extension,screw, cataloged under National Stock Number 1730-01-042-4720, is classified within Federal Supply Class 1730 (No Item Name Available) of the Aircraft Launch, Landing, and Ground Handling Equipment group. The primary manufacturer of record is Wheeler Fleet Solutions, Co.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1730-01-042-4720
Primary Part Number1850-8704-7
Item NameExtension,screw
FSC / FSG1730 / 17 — No Item Name Available
ManufacturerWheeler Fleet Solutions, Co.
StatusACTIVE
General Characteristics Item DescriptionMATERIAL-4142 HOT ROLLED HIGH TENSTRENGTH STEEL 6.750 IN. LONG BY 2 IN. DIAMETER,MATERIAL SPECS-PHOSPHATE COAT PER MIL-C-16232,TYPE 1,FINISHED DIMENSIONS-6.500 LONG WITH 0.062 IN. BY 45 DEGREE CHAMFER ON THREAD END-KNURL 0.375 LONG FULL CURCUMFERENCE BY 2.00 IN. DIAMETER ON UNTHREADED END-G-184 THREAD 5.875 LONG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-110-3500 INTERCHANGEABLE
Transformer,power
5365-00-216-10238704 INTERCHANGEABLE
Spacer,sleeve
Dialight Corporation
2520-00-364-84981K2673 INTERCHANGEABLE
Yoke,universal Joint,vehicular
Caterpillar Inc Div Caterpillar Defense
2915-00-484-70718704 INTERCHANGEABLE
Arm-Stop Servo---Ap
Triumph Engine Control Systems Llc
5360-00-526-9835 INTERCHANGEABLE
Spring,helical,compression
4510-00-528-0245 INTERCHANGEABLE
Arm,waste Pipe
5950-00-875-6829201810 INTERCHANGEABLE
Transformer,power
North Atlantic Industries, Inc. Dba North Atlantic Industries
4320-01-042-4717 INTERCHANGEABLE
Ram,jack,third Stage
4320-01-042-47198704-3 INTERCHANGEABLE
Ram,jack,second Stage
Columbus Jack Corporation Div Columbus Jack
4820-01-067-3971A6790-007-132 INTERCHANGEABLE
Stem,fluid Valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Cross-Reference Index
Part NumberManufacturer
1850-8704-7 Wheeler Fleet Solutions, Co. (USA)
1850-8704-7 Vectrus Systems Llc (USA)
8704-7 Columbus Jack Corporation Div Columbus Jack (USA)
8704-7 Age Logistics Corporation (USA)
8704 Age Logistics Corporation (USA)
Related Parts
5950-00-110-3500INTERCHANGEABLE
TRANSFORMER,POWER
5365-00-216-1023INTERCHANGEABLE
SPACER,SLEEVE
8704
2520-00-364-8498INTERCHANGEABLE
YOKE,UNIVERSAL JOINT,VEHICULAR
1K2673
2915-00-484-7071INTERCHANGEABLE
ARM-STOP SERVO---AP
8704
5360-00-526-9835INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4510-00-528-0245INTERCHANGEABLE
ARM,WASTE PIPE
5950-00-875-6829INTERCHANGEABLE
TRANSFORMER,POWER
201810
4320-01-042-4717INTERCHANGEABLE
RAM,JACK,THIRD STAGE
4320-01-042-4719INTERCHANGEABLE
RAM,JACK,SECOND STAGE
8704-3
4820-01-067-3971INTERCHANGEABLE
STEM,FLUID VALVE
A6790-007-132
7690-01-277-6359INTERCHANGEABLE
MARKER,IDENTIFICATION
63268
4820-01-296-6985INTERCHANGEABLE
RETAINER,DISK,VALVE
6153-55-5 ITEM 12

Frequently Asked Questions

What is NSN 1730-01-042-4720?

NSN 1730-01-042-4720 is a Extension,screw, manufactured by Wheeler Fleet Solutions, Co., classified under FSC 1730 (No Item Name Available). Status: active.

What are the part numbers for NSN 1730-01-042-4720?

NSN 1730-01-042-4720 has 5 cross-referenced part numbers: 1850-8704-7 (Wheeler Fleet Solutions, Co.), 1850-8704-7 (Vectrus Systems Llc), 8704-7 (Columbus Jack Corporation Div Columbus Jack), 8704-7 (Age Logistics Corporation), 8704 (Age Logistics Corporation).

What NSN replaces 1730-01-042-4720?

There are 12 known substitutes for 1730-01-042-4720: 5950-00-110-3500, 5365-00-216-1023, 2520-00-364-8498 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1850-8704-7?

Key specifications for 1850-8704-7: End Item Identification: 35 TON AIRCRAFT AXLE JACK MODEL 8704-B; General Characteristics Item Description: MATERIAL-4142 HOT ROLLED HIGH TENSTRENGTH STEEL 6.750 IN. LONG BY 2 IN. DIAMETER,MATERIAL SPECS-PHOSPHATE COAT PER MIL-C-16232,TYPE 1,FINISHED DIMENSIONS-6.500 LONG WITH 0.062 IN. BY 45 DEGREE CHAMFER ON THREAD END-KNURL 0.375 LONG FULL CURCUMFERENCE BY 2.00 IN. DIAMETER ON UNTHREADED END-G-184 THREAD 5.875 LONG IN. 2 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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