PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

64-049Wrench,torque

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-581-5833 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-581-5833 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-581-5833. Primary manufacturer part number: 64-049.
Features
  • Wrench,torque — FSC 5120
  • Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
  • Style Designator: MICROMETER END DRIVE
  • Drive End Shape: SQUARE SINGLE END EXTERNAL
  • Material: STEEL OVERALL
  • Surface Treatment: CHROMIUM OVERALL
  • Torque Scale Graduation: 1.00 METER-NEWTON
  • Torque Indicating Mechanism: MICROMETER
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,torque, cataloged under National Stock Number 5120-01-581-5833, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Apex Tool Group, Llc Dba Nicholson. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5120-01-581-5833
Primary Part Number64-049
Item NameWrench,torque
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
Style DesignatorMICROMETER END DRIVE
Drive End ShapeSQUARE SINGLE END EXTERNAL
MaterialSTEEL OVERALL
Surface TreatmentCHROMIUM OVERALL
Torque Scale Graduation1.00 METER-NEWTON
Torque Indicating MechanismMICROMETER
Torque Capacity10.0 METER-NEWTON MINIMUM AND 100.0 METER-NEWTON MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5310-00-022-00811B4331 INTERCHANGEABLE
Nut,plain,hexagon
Caterpillar Inc Div Caterpillar Defense
5360-00-327-081464049 INTERCHANGEABLE
Spring,helical,compression
Hiller Aircraft Corporation
6665-00-887-9542640-49 INTERCHANGEABLE
Edison Thermostat
Unicontrol Inc Hays Cleveland Div
5340-01-205-5711 INTERCHANGEABLE
Plate,mending
5331-01-457-9689 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
64-049 Apex Tool Group, Llc Dba Nicholson (USA)
64-049 Armstrong Bros Tool Co (USA)
64-049 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
Related Parts
5310-00-022-0081INTERCHANGEABLE
NUT,PLAIN,HEXAGON
1B4331
5360-00-327-0814INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
64049
6665-00-887-9542INTERCHANGEABLE
EDISON THERMOSTAT
640-49
5340-01-205-5711INTERCHANGEABLE
PLATE,MENDING
5331-01-457-9689INTERCHANGEABLE
O-RING

Frequently Asked Questions

What is NSN 5120-01-581-5833?

NSN 5120-01-581-5833 is a Wrench,torque, manufactured by Apex Tool Group, Llc Dba Nicholson, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-581-5833?

NSN 5120-01-581-5833 has 3 cross-referenced part numbers: 64-049 (Apex Tool Group, Llc Dba Nicholson), 64-049 (Armstrong Bros Tool Co), 64-049 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.).

What NSN replaces 5120-01-581-5833?

There are 5 known substitutes for 5120-01-581-5833: 5310-00-022-0081, 5360-00-327-0814, 6665-00-887-9542 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 64-049?

Key specifications for 64-049: Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN; Special Features: RATCHET HEAD; Style Designator: MICROMETER END DRIVE; Drive End Shape: SQUARE SINGLE END EXTERNAL. 10 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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