PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

391AMultiplier,torque Wrench

Hydratight Operations Inc · NSN 5120-01-140-6343 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-140-6343 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-140-6343. Primary manufacturer part number: 391A.
Features
  • Multiplier,torque Wrench — FSC 5120
  • Material: STEEL OVERALL
  • Drive End Shape: SQUARE SECOND END EXTERNAL
  • Gear Ratio: 6.33 TO 1
  • Surface Treatment: CHROMIUM OVERALL
  • Drive Surface Size: 0.750 INCHES NOMINAL SECOND END IN
  • Drive End Shape: SQUARE FIRST END INTERNAL
  • Style Designator: GEARED
Applications
  • Applications requiring Steel Overall construction
General Description

The Multiplier,torque Wrench, cataloged under National Stock Number 5120-01-140-6343, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Hydratight Operations Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, 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
NSN5120-01-140-6343
Primary Part Number391A
Item NameMultiplier,torque Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerHydratight Operations Inc
StatusACTIVE
MaterialSTEEL OVERALL
Drive End ShapeSQUARE SECOND END EXTERNAL
Gear Ratio6.33 TO 1
Surface TreatmentCHROMIUM OVERALL
Drive Surface Size0.750 INCHES NOMINAL SECOND END IN
Drive End ShapeSQUARE FIRST END INTERNAL
Style DesignatorGEARED
Drive Surface Size0.500 INCHES NOMINAL FIRST END IN
Torque Capacity1200.0 FOOT-POUNDS MAXIMUM FT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-103-2679391A INTERCHANGEABLE
Test Set,semiconductor Device
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
4720-00-176-4522 INTERCHANGEABLE
Hose Assembly,nonmetallic
5305-00-192-0489 INTERCHANGEABLE
Screw
3835-00-223-9080 INTERCHANGEABLE
Shoe,well Pipe and Casing
5935-00-237-659590-5243297 INTERCHANGEABLE
Jack,tip
Pegasus Inc
5935-00-238-4238136BLACK INTERCHANGEABLE
Jack,tip
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
6680-00-421-7404391A INTERCHANGEABLE
Transmitter,liquid Quantity
Stewart-Warner Corporation
5820-00-498-0730391A INTERCHANGEABLE
Panel
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6740-00-535-4701391 INTERCHANGEABLE
Light Assy,projecti
Miller-Holzwarth Inc.
5940-00-656-506210528698 INTERCHANGEABLE
Adapter,radio Frequency Cable
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
391A PRIMARY Hydratight Operations Inc (USA)
SWE391A Hydratight Operations Inc (USA)
391 Hydratight Operations Inc (USA)
Related Parts
6625-00-103-2679INTERCHANGEABLE
TEST SET,SEMICONDUCTOR DEVICE
391A
4720-00-176-4522INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
5305-00-192-0489INTERCHANGEABLE
SCREW
3835-00-223-9080INTERCHANGEABLE
SHOE,WELL PIPE AND CASING
5935-00-237-6595INTERCHANGEABLE
JACK,TIP
90-5243297
5935-00-238-4238INTERCHANGEABLE
JACK,TIP
136BLACK
6680-00-421-7404INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
391A
5820-00-498-0730INTERCHANGEABLE
PANEL
391A
6740-00-535-4701INTERCHANGEABLE
LIGHT ASSY,PROJECTI
391
5940-00-656-5062INTERCHANGEABLE
ADAPTER,RADIO FREQUENCY CABLE
10528698
5930-00-686-9533INTERCHANGEABLE
SWITCH,PUSH
39-1
5315-00-809-0350INTERCHANGEABLE
PIN,SPRING
062-4375MCP

Frequently Asked Questions

What is NSN 5120-01-140-6343?

NSN 5120-01-140-6343 is a Multiplier,torque Wrench, manufactured by Hydratight Operations Inc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-140-6343?

NSN 5120-01-140-6343 has 3 cross-referenced part numbers: 391A (Hydratight Operations Inc), SWE391A (Hydratight Operations Inc), 391 (Hydratight Operations Inc).

What NSN replaces 5120-01-140-6343?

There are 12 known substitutes for 5120-01-140-6343: 6625-00-103-2679, 4720-00-176-4522, 5305-00-192-0489 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 391A?

Key specifications for 391A: Overall Length: 19.600 INCHES NOMINAL IN; Overall Height: 4.000 INCHES NOMINAL IN; Material: STEEL OVERALL; Drive End Shape: SQUARE SECOND END EXTERNAL. 11 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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